Weather History for Portland, OR

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Sunday, December 23, 2012

  Actual Average Record
Temperature  
Mean Temperature 40 °F 40 °F  
Max Temperature 43 °F 45 °F 64 °F (1950)
Min Temperature 37 °F 35 °F 11 °F (1998)
Degree Days  
Heating Degree Days 25 25  
Month to date heating degree days 475 558  
Since 1 July heating degree days 1284 1527  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 436 424  
Moisture  
Dew Point 37 °F    
Average Humidity 85    
Maximum Humidity 93    
Minimum Humidity 76    
Precipitation  
Precipitation 0.51 in 0.17 in 1.19 in (1971)
Month to date precipitation 6.72 4.18  
Year to date precipitation 49.60 34.72  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.75 in    
Wind  
Wind Speed 7 mph (SE)    
Max Wind Speed 16 mph    
Max Gust Speed 18 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 23, 2012 Rise Set
Actual Time 7:49 AM PST 4:30 PM PST
Civil Twilight 7:14 AM PST 5:05 PM PST
Nautical Twilight 6:36 AM PST 5:42 PM PST
Astronomical Twilight 6:00 AM PST 6:19 PM PST
Moon 1:30 PM PST (12/23) 3:30 AM PST (12/23)
Length of Visible Light 9h 50m
Length of Day
8h 41m
Waxing Gibbous, 82% of the Moon is Illuminated
Dec 23
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 42.1 °F 36.6 °F 37.9 °F 85% 29.81 in 10.0 mi ESE 9.2 mph - 0.00 in   Overcast
1:53 AM 42.1 °F 37.1 °F 36.0 °F 79% 29.81 in 10.0 mi ESE 8.1 mph - N/A   Mostly Cloudy
2:53 AM 42.1 °F 36.1 °F 37.0 °F 82% 29.81 in 10.0 mi ESE 10.4 mph - 0.00 in   Overcast
3:53 AM 42.1 °F 36.1 °F 37.0 °F 82% 29.80 in 10.0 mi ESE 10.4 mph - 0.00 in Rain Light Rain
4:53 AM 42.1 °F 36.1 °F 37.0 °F 82% 29.78 in 10.0 mi ESE 10.4 mph - 0.00 in   Overcast
5:53 AM 42.1 °F 36.6 °F 37.9 °F 85% 29.78 in 10.0 mi SE 9.2 mph - 0.01 in   Overcast
6:53 AM 42.1 °F 36.6 °F 37.0 °F 82% 29.76 in 10.0 mi SE 9.2 mph - 0.00 in   Overcast
7:53 AM 41.0 °F 33.9 °F 37.9 °F 89% 29.73 in 10.0 mi East 12.7 mph - 0.00 in Rain Light Rain
8:53 AM 42.1 °F 37.7 °F 37.9 °F 85% 29.70 in 10.0 mi SE 6.9 mph - 0.01 in   Overcast
9:53 AM 41.0 °F 35.8 °F 37.9 °F 89% 29.69 in 10.0 mi ESE 8.1 mph - 0.00 in   Overcast
10:53 AM 41.0 °F 35.2 °F 37.9 °F 89% 29.67 in 10.0 mi SE 9.2 mph - 0.01 in Rain Light Rain
11:53 AM 41.0 °F 35.8 °F 37.9 °F 89% 29.64 in 10.0 mi ESE 8.1 mph - 0.03 in Rain Light Rain
12:38 PM 42.8 °F - 37.4 °F 81% 29.63 in 10.0 mi Calm Calm - 0.03 in Rain Light Rain
12:53 PM 42.1 °F - 37.9 °F 85% 29.63 in 6.0 mi Calm Calm - 0.04 in Rain Light Rain
1:53 PM 41.0 °F 35.8 °F 39.9 °F 96% 29.62 in 8.0 mi WNW 8.1 mph - 0.05 in Rain Light Rain
2:11 PM 41.0 °F 35.8 °F 39.2 °F 93% 29.62 in 5.0 mi WNW 8.1 mph - 0.02 in Rain Light Rain
2:53 PM 41.0 °F 38.0 °F 39.9 °F 96% 29.64 in 4.0 mi West 4.6 mph - 0.06 in Rain Light Rain
3:22 PM 41.0 °F 38.0 °F 39.2 °F 93% 29.65 in 4.0 mi West 4.6 mph - 0.04 in Rain Rain
3:31 PM 41.0 °F 37.1 °F 37.4 °F 87% 29.66 in 5.0 mi West 5.8 mph - 0.05 in Rain Light Rain
3:42 PM 41.0 °F 36.4 °F 37.4 °F 87% 29.67 in 7.0 mi WSW 6.9 mph - 0.06 in Rain Light Rain
3:53 PM 41.0 °F 37.1 °F 37.9 °F 89% 29.67 in 5.0 mi WSW 5.8 mph - 0.08 in Rain Rain
4:53 PM 39.0 °F 35.7 °F 36.0 °F 89% 29.71 in 8.0 mi SW 4.6 mph - 0.07 in Rain Light Rain
5:39 PM 37.4 °F 30.8 °F 35.6 °F 93% 29.74 in 8.0 mi SSW 9.2 mph - 0.07 in Rain Light Rain
5:53 PM 37.0 °F 30.4 °F 35.1 °F 93% 29.74 in 10.0 mi South 9.2 mph - 0.07 in Rain Light Rain
6:08 PM 37.4 °F 32.1 °F 33.8 °F 87% 29.73 in 10.0 mi SE 6.9 mph - 0.01 in Rain Light Rain
6:53 PM 37.0 °F 34.5 °F 35.1 °F 93% 29.78 in 10.0 mi SSE 3.5 mph - 0.01 in   Overcast
7:00 PM 37.4 °F 33.8 °F 35.6 °F 93% 29.78 in 10.0 mi ESE 4.6 mph - N/A   Overcast
7:25 PM 37.4 °F 32.8 °F 35.6 °F 93% 29.80 in 9.0 mi SE 5.8 mph - 0.01 in Rain Light Rain
7:53 PM 37.9 °F 35.5 °F 35.1 °F 89% 29.82 in 10.0 mi ESE 3.5 mph - 0.02 in Rain Light Rain
8:53 PM 37.0 °F 30.4 °F 35.1 °F 93% 29.83 in 10.0 mi East 9.2 mph - 0.00 in   Overcast
9:24 PM 37.4 °F 32.1 °F 35.6 °F 93% 29.84 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
9:37 PM 37.4 °F 32.1 °F 35.6 °F 93% 29.85 in 10.0 mi ESE 6.9 mph - N/A   Overcast
9:53 PM 37.0 °F 33.3 °F 35.1 °F 93% 29.86 in 10.0 mi SE 4.6 mph - N/A   Mostly Cloudy
10:53 PM 39.0 °F 36.8 °F 37.0 °F 93% 29.89 in 10.0 mi SE 3.5 mph - 0.01 in Rain Light Rain
11:03 PM 39.2 °F - 37.4 °F 93% 29.89 in 8.0 mi Calm Calm - 0.00 in Rain Light Rain
11:53 PM 41.0 °F 37.1 °F 37.9 °F 89% 29.92 in 10.0 mi SSW 5.8 mph - 0.03 in Rain Light Rain