Weather History for Portland, OR

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Saturday, December 29, 2012

  Actual Average Record
Temperature  
Mean Temperature 35 °F 40 °F  
Max Temperature 41 °F 45 °F 58 °F (1950)
Min Temperature 29 °F 35 °F 14 °F (1990)
Degree Days  
Heating Degree Days 30 25  
Month to date heating degree days 624 708  
Since 1 July heating degree days 1433 1677  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 436 424  
Moisture  
Dew Point 31 °F    
Average Humidity 73    
Maximum Humidity 85    
Minimum Humidity 60    
Precipitation  
Precipitation T in 0.16 in 1.66 in (1983)
Month to date precipitation 7.56 5.18  
Year to date precipitation 50.44 35.72  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.21 in    
Wind  
Wind Speed 3 mph (ESE)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 29, 2012 Rise Set
Actual Time 7:50 AM PST 4:35 PM PST
Civil Twilight 7:16 AM PST 5:09 PM PST
Nautical Twilight 6:38 AM PST 5:46 PM PST
Astronomical Twilight 6:02 AM PST 6:23 PM PST
Moon 6:18 PM PST (12/29) 8:22 AM PST (12/29)
Length of Visible Light 9h 52m
Length of Day
8h 44m
Full, 98% of the Moon is Illuminated
Dec 29
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

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 35.1 °F 26.9 °F 26.1 °F 70% 30.19 in 10.0 mi ESE 11.5 mph - N/A   Overcast
1:53 AM 34.0 °F 28.0 °F 26.1 °F 73% 30.19 in 10.0 mi ESE 6.9 mph - N/A   Partly Cloudy
2:53 AM 34.0 °F 31.0 °F 26.1 °F 73% 30.21 in 10.0 mi East 3.5 mph - N/A   Partly Cloudy
3:53 AM 33.8 °F 27.7 °F 26.6 °F 75% 30.21 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
4:53 AM 30.9 °F - 26.1 °F 82% 30.21 in 10.0 mi Calm Calm - N/A   Overcast
5:53 AM 35.1 °F - 27.0 °F 72% 30.22 in 10.0 mi Calm Calm - N/A   Overcast
6:53 AM 30.0 °F - 26.1 °F 85% 30.22 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:53 AM 30.0 °F - 26.1 °F 85% 30.23 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:53 AM 32.0 °F - 28.9 °F 88% 30.24 in 10.0 mi Calm Calm - N/A   Overcast
9:53 AM 36.0 °F - 28.9 °F 76% 30.25 in 10.0 mi Calm Calm - N/A   Overcast
10:53 AM 37.9 °F 34.4 °F 28.0 °F 68% 30.24 in 10.0 mi East 4.6 mph - N/A   Overcast
11:53 AM 39.0 °F 36.8 °F 28.9 °F 67% 30.22 in 10.0 mi ENE 3.5 mph - N/A   Overcast
12:53 PM 39.9 °F 34.5 °F 28.0 °F 63% 30.19 in 10.0 mi SE 8.1 mph - N/A   Mostly Cloudy
1:53 PM 41.0 °F - 28.0 °F 60% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
2:53 PM 41.0 °F - 28.4 °F 61% 30.17 in 10.0 mi Calm Calm - N/A   Overcast
3:53 PM 39.9 °F 37.8 °F 30.0 °F 68% 30.17 in 10.0 mi ENE 3.5 mph - 0.00 in Rain Light Rain
4:13 PM 39.2 °F 35.9 °F 30.2 °F 70% 30.17 in 10.0 mi SE 4.6 mph - 0.00 in   Overcast
4:53 PM 39.0 °F 36.8 °F 30.9 °F 73% 30.18 in 10.0 mi ESE 3.5 mph - 0.00 in   Overcast
5:43 PM 37.4 °F - 33.8 °F 87% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
5:53 PM 39.0 °F - 33.1 °F 79% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
6:11 PM 37.4 °F 34.9 °F 33.8 °F 87% 30.18 in 10.0 mi SSE 3.5 mph - N/A   Overcast
6:53 PM 37.9 °F 35.5 °F 33.1 °F 83% 30.19 in 10.0 mi ENE 3.5 mph - N/A   Overcast
7:53 PM 37.9 °F - 34.0 °F 86% 30.19 in 10.0 mi Calm Calm - 0.00 in   Overcast
8:53 PM 37.9 °F - 34.0 °F 86% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
9:06 PM 37.4 °F - 33.8 °F 87% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
9:25 PM 37.4 °F 32.1 °F 33.8 °F 87% 30.20 in 10.0 mi ESE 6.9 mph - N/A   Overcast
9:38 PM 37.4 °F 33.8 °F 33.8 °F 87% 30.20 in 10.0 mi ESE 4.6 mph - N/A   Overcast
9:53 PM 37.4 °F 33.8 °F 33.8 °F 87% 30.21 in 10.0 mi ESE 4.6 mph - N/A   Overcast
10:31 PM 37.4 °F 33.8 °F 33.8 °F 87% 30.22 in 10.0 mi ESE 4.6 mph - N/A   Overcast
10:53 PM 37.0 °F 32.4 °F 34.0 °F 89% 30.23 in 8.0 mi ESE 5.8 mph - N/A   Overcast
11:17 PM 37.4 °F 33.8 °F 35.6 °F 93% 30.23 in 9.0 mi East 4.6 mph - 0.00 in   Light Drizzle
11:31 PM 37.4 °F - 35.6 °F 93% 30.23 in 7.0 mi Calm Calm - 0.00 in   Overcast
11:53 PM 37.0 °F 33.3 °F 35.1 °F 93% 30.24 in 10.0 mi ESE 4.6 mph - 0.00 in   Overcast