Weather History for Ontario, CA

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Month of January, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 82 °F 67 °F 53 °F
Mean Temperature 66 °F 54 °F 41 °F
Min Temperature 56 °F 40 °F 28 °F
Degree Days  
Heating Degree Days (base 65) 24 11 0 349
Cooling Degree Days (base 65) 1 0 0 1
Growing Degree Days (base 50) 16 5 0 162
Dew Point  
Dew Point 57 °F 28 °F -10 °F
Precipitation  
Precipitation 0.35 in 0.03 in 0.00 in 0.89 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 36 mph 4 mph 0 mph
Gust Wind 85 mph 24 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.44 in 30.11 in 29.86 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 04, 2013 Rise Set
Actual Time 6:56 AM PST 4:54 PM PST
Civil Twilight 6:28 AM PST 5:22 PM PST
Nautical Twilight 5:57 AM PST 5:53 PM PST
Astronomical Twilight 5:27 AM PST 6:23 PM PST
Moon No Moon Rise 11:02 AM PST (1/4)
Length of Visible Light 10h 53m
Length of Day
9h 58m
Waning Gibbous, 54% of the Moon is Illuminated
Jan 4
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Weather History Calendar

Precipitation Actual month total 0.89 Normal Month Total: 3.31
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
60 | 34 0.00
Average:
65 | 43 0.14
Clear
Actual:
64 | 38 0.00
Average:
65 | 43 0.13
Clear
Actual:
67 | 40 0.00
Average:
65 | 43 0.14
Clear
Actual:
70 | 34 0.00
Average:
65 | 43 0.13
Scattered Clouds
Actual:
69 | 39 0.00
Average:
65 | 43 0.12
Rain
Actual:
60 | 45 0.05
Average:
65 | 43 0.13
Scattered Clouds
Actual:
66 | 44 0.01
Average:
65 | 44 0.13
Scattered Clouds
Actual:
74 | 43 0.00
Average:
65 | 44 0.13
Partly Cloudy
Actual:
72 | 44 0.00
Average:
65 | 44 0.12
Rain
Actual:
58 | 40 0.03
Average:
65 | 44 0.13
Scattered Clouds
Actual:
53 | 32 0.00
Average:
65 | 44 0.12
Scattered Clouds
Actual:
55 | 28 0.00
Average:
65 | 44 0.12
Partly Cloudy
Actual:
53 | 29 0.00
Average:
65 | 44 0.12
Scattered Clouds
Actual:
54 | 38 0.00
Average:
65 | 44 0.12
Scattered Clouds
Actual:
60 | 31 0.00
Average:
65 | 44 0.11
Clear
Actual:
69 | 38 0.00
Average:
65 | 44 0.11
Scattered Clouds
Actual:
77 | 38 0.00
Average:
65 | 44 0.11
Scattered Clouds
Actual:
77 | 41 0.00
Average:
65 | 44 0.11
Scattered Clouds
Actual:
80 | 38 0.00
Average:
65 | 44 0.11
Clear
Actual:
80 | 38 0.00
Average:
65 | 44 0.11
Clear
Actual:
82 | 41 0.00
Average:
65 | 44 0.11
Partly Cloudy
Actual:
81 | 36 0.00
Average:
65 | 44 0.10
Rain
Actual:
80 | 51 0.00
Average:
65 | 44 0.11
Rain
Actual:
66 | 52 0.33
Average:
65 | 44 0.08
Rain
Actual:
62 | 56 0.35
Average:
65 | 44 0.06
Rain
Actual:
64 | 55 0.12
Average:
65 | 44 0.05
Thunderstorm
Actual:
59 | 53 0.00
Average:
65 | 44 0.04
Fog
Actual:
58 | 40 0.00
Average:
65 | 44 0.06
Partly Cloudy
Actual:
58 | 37 0.00
Average:
65 | 44 0.08
Scattered Clouds
Actual:
67 | 39 0.00
Average:
65 | 44 0.09
Scattered Clouds
Actual:
75 | 43 0.00
Average:
65 | 44 0.09
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2013 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 60 47 34 33 25 14 76 46 16 30.25 30.17 30.09 10 10 9 20 3 29 0.00  
2 64 51 38 27 22 15 54 35 15 30.12 30.07 30.04 10 10 7 12 5 14 0.00  
3 67 54 40 28 21 12 55 34 13 30.19 30.10 30.04 10 10 10 10 4 17 0.00  
4 70 51 34 25 19 9 59 35 11 30.27 30.21 30.17 10 10 10 8 1 - 0.00  
5 69 54 39 37 24 10 59 34 9 30.29 30.22 30.17 10 10 10 9 2 10 0.00  
6 60 52 45 45 40 32 86 61 35 30.20 30.12 30.01 10 8 3 18 4 22 0.05 Rain
7 66 55 44 40 30 17 82 49 16 30.08 30.01 29.97 10 10 9 17 5 26 0.01  
8 74 59 43 45 31 19 71 42 13 30.11 30.06 30.02 10 10 10 35 4 85 0.00  
9 72 58 44 47 38 31 93 58 22 30.13 30.06 30.00 10 8 3 13 4 22 0.00  
10 58 49 40 48 37 16 93 57 20 30.05 29.96 29.86 10 6 2 22 10 29 0.03 Rain
11 53 43 32 26 22 17 69 48 26 30.19 30.10 30.04 10 10 10 14 4 17 0.00  
12 55 42 28 25 19 9 75 46 17 30.17 30.11 30.06 10 10 10 10 3 13 0.00  
13 53 41 29 23 14 3 69 43 16 30.18 30.11 30.05 10 10 10 26 5 37 0.00  
14 54 46 38 2 -3 -10 20 15 9 30.32 30.25 30.15 10 10 10 36 19 51 0.00  
15 60 46 31 24 13 4 38 26 14 30.44 30.37 30.31 10 10 10 16 6 18 0.00  
16 69 54 38 27 23 19 49 33 16 30.35 30.24 30.11 10 10 10 12 6 15 0.00  
17 77 58 38 30 21 11 46 28 9 30.18 30.12 30.05 10 10 10 18 3 31 0.00  
18 77 59 41 26 21 13 51 30 9 30.15 30.10 30.05 10 10 10 7 2 21 0.00  
19 80 59 38 25 17 6 45 26 7 30.19 30.12 30.07 10 10 10 12 2 23 0.00  
20 80 59 38 23 15 4 48 27 6 30.14 30.09 30.00 10 10 10 9 3 12 0.00  
21 82 62 41 25 12 0 36 20 4 30.09 30.04 30.00 10 10 10 12 4 14 0.00  
22 81 59 36 25 16 2 37 21 5 30.12 30.06 30.01 10 10 10 8 2 12 0.00  
23 80 66 51 37 28 21 32 23 14 30.11 30.05 30.01 10 10 10 12 4 14 0.00 Rain
24 66 59 52 54 51 41 93 78 63 30.21 30.14 30.10 10 9 2 13 2 15 0.33 Rain
25 62 59 56 57 55 52 93 87 80 30.14 30.04 29.95 10 9 4 9 4 13 0.35 Rain
26 64 60 55 57 55 53 93 86 78 29.99 29.93 29.88 10 7 1 13 4 16 0.12 Rain
27 59 56 53 54 46 39 93 75 57 30.01 29.98 29.94 10 9 2 17 9 23 0.00 Rain , Thunderstorm
28 58 49 40 40 35 23 92 65 38 30.18 30.08 30.01 10 10 10 13 2 16 0.00 Fog
29 58 48 37 39 34 29 76 57 38 30.24 30.20 30.14 10 10 10 15 2 17 0.00  
30 67 53 39 41 38 35 85 60 34 30.34 30.26 30.21 10 10 10 10 2 20 0.00  
31 75 59 43 40 37 33 76 50 23 30.24 30.16 30.08 10 10 10 17 3 - 0.00