Diamond Bar, CA

4:39 AM PDT on May 25, 2012 (GMT -0700)
Elev: 997 ft
Lon: 117.8° W
Lat: 34.0° N
Source
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Tropical Weather: Invest 94 (North Atlantic) Hurricane Bud (East Pacific) Typhoon Sanvu (Western Pacific)
Weather Summary
Jessica Parker
Weather Underground Forecast for Friday, May 25, 2012.

Expect more active weather to develop across the Great Lakes on Friday, as a low pressure system moves from the Upper Midwest into eastern Canada. This system will push a cold front over the Great Lakes and Midwest, producing scattered showers and thunderstorms throughout the day. There is a slight chance that some of these storms will turn severe with strong winds and large hail. Rainfall totals will range from 1 to 2 inches, with over 2 inches likely in areas of severe weather development.

Behind this activity in the West, a low pressure system will move over the Great Basin and into the Southern Rockies. Flow around this system will produce cooler temperatures across the West, while also triggering scattered showers over the Pacific Northwest, northern California, and Intermountain West. Snow showers may develop again across the highest elevations of the Northern Rockies.

Meanwhile in the East, high pressure builds from the Plains, over the Mississippi River Valley, and into the Eastern US. This will keep moisture away to the north, allowing for dry, sunny, and warm conditions. High temperatures will range in the 80s and 90s from the Central Plains through the Eastern Valleys, with parts of the Southern US reaching into the lower 100s.
Weather Underground Forecast for Friday, May 25, 2012.

Expect more active weather to develop across the Great Lakes on Friday, as a low pressure system moves from the Upper Midwest into eastern Canada. This system will push a cold front over the Great Lakes and Midwest, producing scattered showers and thunderstorms throughout the day. There is a slight chance that some of these storms will turn severe with strong winds and large hail. Rainfall totals will range from 1 to 2 inches, with over 2 inches likely in areas of severe weather development.

Behind this activity in the West, a low pressure system will move over the Great Basin and into the Southern Rockies. Flow around this system will produce cooler temperatures across the West, while also triggering scattered showers over the Pacific Northwest, northern California, and Intermountain West. Snow showers may develop again across the highest elevations of the Northern Rockies.

Meanwhile in the East, high pressure builds from the Plains, over the Mississippi River Valley, and into the Eastern US. This will keep moisture away to the north, allowing for dry, sunny, and warm conditions. High temperatures will range in the 80s and 90s from the Central Plains through the Eastern Valleys, with parts of the Southern US reaching into the lower 100s.
Weather Underground Broadcast Network

Diamond Bar Weather at a Glance

Updated 3:57 AM PDT
Elevation
1339 ft
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Now
Overcast
Overcast
Temperature
55 °F
Feels Like 55 °F
Wind(mph)
9
Sunrise / Set
5:43 AM
7:53 PM
Moon
Waxing Crescent
Today
Chance of Rain 66 °F
Chance of Rain
20% chance of precipitation
Tonight
Chance of Rain 45 °F
Chance of Rain
20% chance of precipitation
Tomorrow
Partly Cloudy 70 | 46 °F
Partly Cloudy
Sunday
Partly Cloudy 75 | 52 °F
Partly Cloudy
Monday
Clear 82 | 50 °F
Clear
Tuesday
Clear 81 | 50 °F
Clear
Today is forecast to be Much Cooler than yesterday.
Conditions
Pressure
29.70 in
Visibility
-
Clouds
Mostly Cloudy 1700 ft
Overcast 2500 ft
Moisture
Humidity
89%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KCNO 251053Z 25004KT BKN017 OVC025 16/11 A2971 RMK AO2 SLP058 T01560111 $
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
55 °F
Dew Point
52 °F
Wind
Speed / Dir
9 mph from SSE
Wind Gust
16.0 mph
Health
UV
0 out of 16
Pollen
4.80 out of 12
Pollen Forecast
Ozone
Good
Flu Activity
Local Activity
View Flu Map
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Source: BestForecast
Descriptive Forecast
Friday
chancerain Overcast with a chance of rain. High of 66F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 20%.
Friday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 45F. Winds from the South at 5 to 15 mph. Chance of rain 20%.
Saturday
partlycloudy Partly cloudy. High of 70F. Breezy. Winds from the SSW at 10 to 20 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the SSW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 75F. Winds from the SW at 5 to 10 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds less than 5 mph.
Monday
clear Clear. High of 82F. Winds from the WNW at 5 to 15 mph shifting to the SW in the afternoon.
Monday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Tuesday
clear Clear. High of 81F. Winds from the SSW at 5 to 15 mph.
Tuesday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Wednesday
clear Clear. High of 82F. Winds from the WSW at 5 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds less than 5 mph.
Thursday
clear Clear. High of 82F. Winds from the WSW at 5 to 15 mph.
Thursday Night
nt_clear Clear. Low of 54F. Winds less than 5 mph.
Friday
clear Clear. High of 84F. Winds from the WNW at 5 to 15 mph shifting to the SW in the afternoon.
Friday Night
nt_clear Clear. Low of 57F. Winds less than 5 mph.
Saturday
clear Clear. High of 81F. Winds from the SW at 5 to 10 mph.
Saturday Night
nt_clear Partly cloudy. Low of 57F. Winds less than 5 mph.
Sunday
clear Clear. High of 82F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 55F. Winds less than 5 mph.
Monday
clear Clear. High of 82F. Winds from the SW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 55F. Winds less than 5 mph.
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Forecast

View Calendar 10-Day Forecast for station KCACHINO6

Friday, 25
Chance of Rain
66 | 45 °F
Chance of Rain
Chance of
Precipitation
20%
Saturday, 26
Partly Cloudy
70 | 46 °F
Partly Cloudy
Chance of
Precipitation
10%
Sunday, 27
Partly Cloudy
75 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 28
Clear
82 | 50 °F
Clear
Chance of
Precipitation
0%
Tuesday, 29
Clear
81 | 50 °F
Clear
Chance of
Precipitation
0%
Wednesday, 30
Clear
82 | 52 °F
Clear
Chance of
Precipitation
0%
Thursday, 31
Clear
82 | 54 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Clear
84 | 57 °F
Clear
Chance of
Precipitation
0%
Saturday, 2
Clear
81 | 57 °F
Clear
Chance of
Precipitation
0%
Sunday, 3
Clear
82 | 55 °F
Clear
Chance of
Precipitation
0%
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Friday
chancerain Overcast with a chance of rain. High of 66F. Breezy. Winds from the SSW at 10 to 20 mph. Chance of rain 20%.
Friday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 45F. Winds from the South at 5 to 15 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 52 58 | 51 59 | 50 50 | 45
Wind 7 mph South 13 mph South 16 mph SW 6 mph SSW
Humidity 90% 80% 71% 81%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 99% 78% 48% 54%
Conditions Chance of Rain Chance of Rain Chance of Rain Partly Cloudy
Sunrise & Sunset
5:43 AM
7:53 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.19], Average RMSE [1.54]
The National Weather Service forecast quality is good. MaxT RMSE [2.03], Average RMSE [1.82] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 70F. Breezy. Winds from the SSW at 10 to 20 mph.
Saturday Night
nt_partlycloudy Partly cloudy. Low of 46F. Winds from the SSW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 48 | 45 57 | 44 58 | 47 49 | 47
Wind 4 mph SE 12 mph SW 15 mph SW 6 mph SW
Humidity 90% 61% 67% 93%
Chance of Precip. 10% 10% 10% 0%
Cloud Cover 41% 25% 28% 54%
Conditions Partly Cloudy Clear Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:43 AM
7:54 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.99], Average RMSE [1.38]
The National Weather Service forecast quality is good. MaxT RMSE [2.36], Average RMSE [1.97] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy in the morning, then clear. High of 75F. Winds from the SW at 5 to 10 mph.
Sunday Night
nt_clear Clear. Low of 52F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 51 67 | 46 68 | 46 55 | 47
Wind 1 mph SSE 2 mph WSW 8 mph West 1 mph NE
Humidity 90% 49% 46% 77%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 54% 5% 5% 0%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:42 AM
7:54 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.76], Average RMSE [1.64]
The National Weather Service forecast quality is fair. MaxT RMSE [2.84], Average RMSE [2.01] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 82F. Winds from the WNW at 5 to 15 mph shifting to the SW in the afternoon.
Monday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 51 73 | 50 70 | 48 54 | 49
Wind 4 mph NNE 9 mph SW 9 mph SW 2 mph ESE
Humidity 87% 44% 45% 83%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:42 AM
7:55 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.68], Average RMSE [1.77]
The National Weather Service forecast quality is fair. MaxT RMSE [3.25], Average RMSE [2.00] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Tuesday
clear Clear. High of 81F. Winds from the SSW at 5 to 15 mph.
Tuesday Night
nt_clear Clear. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 52 75 | 55 71 | 56 54 | 53
Wind 2 mph ESE 9 mph SSW 8 mph SW 1 mph ENE
Humidity 85% 51% 59% 94%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.47], Average RMSE [1.88]
The National Weather Service forecast quality is poor. MaxT RMSE [3.88], Average RMSE [1.83] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Wednesday
clear Clear. High of 82F. Winds from the WSW at 5 to 15 mph.
Wednesday Night
nt_clear Clear. Low of 52F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 52 73 | 58 72 | 58 55 | 55
Wind 2 mph NW 9 mph SW 8 mph SW 1 mph ESE
Humidity 95% 57% 61% 97%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.02], Average RMSE [1.69]
The National Weather Service forecast quality is poor. MaxT RMSE [4.02], Average RMSE [1.70] : Use NWS
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Thursday
clear Clear. High of 82F. Winds from the WSW at 5 to 15 mph.
Thursday Night
nt_clear Clear. Low of 54F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 56 76 | 62 73 | 60 59 | 58
Wind 1 mph NW 10 mph SW 9 mph SW 1 mph East
Humidity 96% 60% 63% 94%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.93], Average RMSE [1.31]
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Friday
clear Clear. High of 84F. Winds from the WNW at 5 to 15 mph shifting to the SW in the afternoon.
Friday Night
nt_clear Clear. Low of 57F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 58 77 | 61 75 | 59 58 | 56
Wind 1 mph WNW 10 mph SW 9 mph SW 3 mph SSW
Humidity 98% 55% 57% 93%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 7%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.71], Average RMSE [1.99]
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Saturday
clear Clear. High of 81F. Winds from the SW at 5 to 10 mph.
Saturday Night
nt_clear Partly cloudy. Low of 57F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 58 75 | 60 74 | 58 59 | 52
Wind 1 mph South 5 mph SSW 9 mph WSW 3 mph South
Humidity 96% 58% 58% 82%
Chance of Precip. 0% 0% 0% 10%
Cloud Cover 15% 11% 6% 10%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.46], Average RMSE [2.37]
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Sunday
clear Clear. High of 82F. Winds from the SW at 5 to 15 mph.
Sunday Night
nt_clear Clear. Low of 55F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 46 73 | 56 74 | 52 57 | 44
Wind 2 mph South 5 mph SSW 10 mph WSW 3 mph SSW
Humidity 67% 54% 46% 58%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 15% 7% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
Source: BestForecast at 1:14 AM PDT on May 25, 2012
Descriptive Forecast
Monday
clear Clear. High of 82F. Winds from the SW at 5 to 15 mph.
Monday Night
nt_clear Clear. Low of 55F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 45 72 | 54 69 | 44 57 | 42
Wind 1 mph South 5 mph SSW 10 mph WSW 3 mph SSW
Humidity 66% 51% 41% 55%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:41 AM
7:55 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 25, 2012 Max Temp Min Temp
Normal (KFUL) 76 °F 57 °F
Record (KFUL) 98 °F (1974) 41 °F (1953)
Yesterday 73 °F 65 °F
Yesterday's Cooling Degree Days: 4
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
Barstow, CA 90 miles 3.2 10:45 PM PDT
2012-05-23
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
OZONE
Current Good
OZONE
Friday Good
PM10
Friday Good
OZONE
Friday Good
CO
Friday Good
NO2
Coastal Water Temperatures
Place Temperature
Santa Monica Pier 64.9 °F
Los Angeles, CA 66.0 °F
La Jolla, CA 64.9 °F
Marine Forecast
Astronomy
May. 25, 2012 Rise Set
Actual Time 5:43 AM PDT 7:53 PM PDT
Civil Twilight 5:15 AM PDT 8:21 PM PDT
Nautical Twilight 4:40 AM PDT 8:56 PM PDT
Astronomical Twilight 4:03 AM PDT 9:33 PM PDT
Moon 9:44 AM PDT 11:37 PM PDT
Length Of Visible Light 15h 06m
Length of Day
14h 09m
Tomorrow will be 1m 7s longer.
Waxing Crescent, 18% of the Moon is Illuminated
Today
Waxing Crescent
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New
Visit Astronomy
Today's Extremes
State Highs State Lows
82 °F
Needles
75 °F
Blythe
72 °F
Palm Springs
72 °F
Thermal
71 °F
Twentynine Palms
32 °F
Truckee-Tahoe
35 °F
Weaverville
35 °F
Blue Canyon
36 °F
Alturas
36 °F
Mount Shasta
Record Extremes
Snow Depth
Station Depth Elevation
Leavitt Lake 19 in 9400 ft
Leavitt Meadows 1 in 7200 ft
Sonora Pass 0 in 8800 ft
Summit Meadow 2 in 9122 ft
Poison Flat 0 in 7900 ft
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
Business Connection BNI Meetup 7:00 AM PDT 2012-05-25 Overcast, 57°F
4th Fridays! 'Active' Monthly Business Networking Event 6:00 PM PDT 2012-05-25 Chance of Rain, 60°F
Bible Study 7:00 PM PDT 2012-05-25 Chance of Rain, 58°F
Secret City Improv Comedy 8:00 PM PDT 2012-05-25 Chance of Rain, 55°F
Hot Water Music and Touche Amore 7:00 PM PDT 2012-05-26 Partly Cloudy, 62°F
Danny Maika 10:00 PM PDT 2012-05-26 Clear, 56°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
La Verne This station is not reporting.
Chino 60 °F Overcast 3:53 AM PDT
Fullerton 64 °F Overcast 4:07 AM PDT
Ontario 59 °F Overcast 3:53 AM PDT
View all Aviation Tools
Flight To ETA Status
UPS910
Chicago/Rockford, IL 		KONT 04:28AM On Time
UPS918
 KONT 04:46AM On Time
UPS918
Louisville, KY 		KONT 04:46AM On Time
FDX1438
 KONT 04:54AM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: MVFR (KCNO)
Wind Speed: 4.0 kts.
Wind Dir: 161° (SSE)
Ceiling: 1700 ft

METAR KCNO 251053Z 25004KT BKN017 OVC025 16/11 A2971 RMK AO2 SLP058 T01560111 $

View all Reports & Maps
Sports
Event Date Forecast
Royals vs. Orioles 7:05 PM EDT on May 25, 2012 Clear, 79 °F
Cubs vs. Pirates 7:05 PM EDT on May 25, 2012 Chance of a Thunderstorm, 81 °F
Astros vs. Dodgers 7:10 PM PDT on May 25, 2012 Chance of Rain, 56 °F
Astros vs. Dodgers 7:10 PM PDT on May 26, 2012 Partly Cloudy, 59 °F
Event Date Forecast
Athletic vs. Barcelona 12:00 PM CEST on May 25, 2012 Scattered Clouds, High 86° F/ 30° C
Barcelona vs. Athletic 10:00 PM CEST on May 25, 2012 Scattered Clouds, High 86° F/ 30° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 27, 2012 Chance of a Thunderstorm, 81 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 03, 2012 Average High 79° F/ 26° C
Event Date Forecast
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 25, 2012 Overcast, 74 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 26, 2012 Mostly Cloudy, 72 °F
View all Sports Weather
Weather Stations
Station Location Temp. Dew Point Humidity Wind Precipitation Elevation Updated Type Website
RAWS TONNER CANYON CA, Brea, CA 55 °F 52 °F 89% SSE  at  9 mph 0.00 in / hr 1339 ft 3:57 AM PDT MADIS
Hilltop in Carbon Canyon, Chino Hills, CA 57.0 °F 51 °F 80% West  at  0.0 mph 0.00 in / hr 1166 ft 4:35 AM PDT Normal  
Carbon Canyon Hilltop, Chino Hills, CA 57.0 °F 53 °F 85% North  at  2.2 mph 0.00 in / hr 1243 ft 4:39 AM PDT Rapid Fire  
MesoWest Industry , West Covina, CA 58 °F - - North  at  - 0.00 in / hr 450 ft 3:10 AM PDT MADIS
Enclos Corp., Pomona, CA 59.6 °F 52 °F 77% West  at  4.0 mph 0.00 in / hr 806 ft 4:39 AM PDT Normal  
APRSWXNET Chino Hills CA , Chino Hills, CA 59 °F 51 °F 76% South  at  6 mph 0.00 in / hr 740 ft 4:14 AM PDT MADIS
MesoWest Pomona , Pomona, CA - - - WSW  at  5 mph 0.00 in / hr 886 ft 2:00 AM PDT MADIS
Pomona Historic Lincoln Park, Pomona, CA 59.5 °F 52 °F 77% WSW  at  1.0 mph 0.00 in / hr 911 ft 4:39 AM PDT Rapid Fire  
Northern Brea, Brea, CA 61.7 °F 54 °F 75% SW  at  0.0 mph 0.00 in / hr 375 ft 4:38 AM PDT Normal  
Brea, CA 61.3 °F 45 °F 54% SSW  at  0.0 mph 0.00 in / hr 550 ft 4:39 AM PDT Normal  
Los Serranos Ranch, Chino Hills, CA 61.0 °F 44 °F 54% SSW  at  3.6 mph 0.00 in / hr 840 ft 4:38 AM PDT Normal
Downtown, Yorba Linda, CA 60.2 °F 53 °F 77% SSW  at  3.0 mph 0.00 in / hr 520 ft 4:34 AM PDT Normal  
La Verne (Eastside), La Verne, CA 57.8 °F 54 °F 87% West  at  1.0 mph 0.00 in / hr 1050 ft 4:39 AM PDT Normal  
Alterra, Chino Hills, CA 58.7 °F 50 °F 73% SW  at  4.6 mph 0.00 in / hr 780 ft 4:39 AM PDT Rapid Fire
Jones Place, Placentia, CA 61.6 °F 53 °F 74% South  at  1.0 mph 0.00 in / hr 341 ft 4:39 AM PDT Rapid Fire  
Imperial Hwy/YL Blvd, YORBA LINDA, CA 61.2 °F 54 °F 76% SE  at  0.0 mph 0.00 in / hr 370 ft 4:32 AM PDT Normal  
BTW 60 and 10 Freeway, La Puente, CA 60.1 °F 53 °F 76% ESE  at  0.0 mph - / hr 350 ft 4:10 AM PDT Normal
South Glendora, Glendora, CA 58.4 °F 56 °F 90% SW  at  0.0 mph 0.00 in / hr 750 ft 4:39 AM PDT Rapid Fire
Yorba Linda Blvd., Placentia, CA 61.6 °F 54 °F 76% NNW  at  0.0 mph - / hr 308 ft 4:30 AM PDT Normal  
Geneva, Claremont, CA 58.3 °F 53 °F 83% WSW  at  1.0 mph 0.00 in / hr 1043 ft 4:32 AM PDT Normal  
Yorba Linda, CA 61.2 °F 48 °F 62% SSW  at  0.0 mph 0.00 in / hr 456 ft 4:39 AM PDT Rapid Fire  
APRSWXNET Fullerton CA , Fullerton, CA 62 °F 55 °F 77% South  at  1 mph 0.00 in / hr 213 ft 4:19 AM PDT MADIS
The West Heights, La Habra Heights, CA 57.8 °F 51 °F 79% SSW  at  1.0 mph 0.00 in / hr 978 ft 4:29 AM PDT Normal  
Nick's Weather Station, Covina, CA 59.6 °F 54 °F 83% South  at  0.0 mph 0.00 in / hr 436 ft 4:39 AM PDT Rapid Fire  
SW Yorba Linda/NW Anaheim Hills, Yorba Linda, CA 61.7 °F 41 °F 47% WNW  at  0.0 mph 0.00 in / hr 278 ft 3:25 AM PDT Rapid Fire  
La Verne, CA 58.6 °F 55 °F 89% NNW  at  0.0 mph 0.00 in / hr 1200 ft 4:39 AM PDT Rapid Fire
MesoWest Fullerton CSU , Fullerton, CA 62 °F 54 °F 76% SE  at  7 mph 0.00 in / hr 240 ft 3:50 AM PDT MADIS
MesoWest La Habra , La Habra, CA - - - SSE  at  5 mph 0.00 in / hr 269 ft 2:00 AM PDT MADIS
La Habra Heights, La Habra Heights, CA 59.8 °F 54 °F 80% SE  at  2.0 mph 0.00 in / hr 600 ft 4:39 AM PDT Rapid Fire  
Historic District, Glendora, CA 61.0 °F 41 °F 47% NNE  at  0.0 mph 0.00 in / hr 768 ft 4:39 AM PDT Rapid Fire  
APRSWXNET Ontario CA, Montclair, CA 57 °F 50 °F 78% WNW  at  3 mph 0.00 in / hr 1145 ft 4:11 AM PDT MADIS
La Verne Heights, La Verne, CA 56.8 °F 52 °F 84% WNW  at  1.9 mph 0.00 in / hr 1467 ft 4:34 AM PDT Normal  
Bryant Ranch - 91/241 Fwy, Yorba Linda, CA 61.2 °F 51 °F 70% SW  at  0.0 mph - / hr 464 ft 4:37 AM PDT Normal  
Cullen Elementary School, Glendora, CA 55.8 °F 54 °F 93% West  at  1.2 mph 0.01 in / hr 878 ft 4:39 AM PDT Rapid Fire
MesoWest Glendora-Laurel , Glendora, CA 57 °F 57 °F 100% SW  at  2 mph 0.00 in / hr 275 ft 2:00 AM PDT MADIS
Claremont-Claraboya, Claremont, CA 55.6 °F 55 °F 98% West  at  0.0 mph 0.00 in / hr 1505 ft 4:39 AM PDT Normal
Claremont (Eagle Grove), Claremont, CA 53.6 °F 53 °F 98% WNW  at  7.2 mph - / hr 1256 ft 4:26 AM PDT Normal
Anaheim Hills, CA 60.5 °F 53 °F 76% East  at  0.0 mph 0.00 in / hr 400 ft 4:29 AM PDT Normal
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