Weather History for Portland, ME

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Sunday, December 9, 2012

  Actual Average Record
Temperature  
Mean Temperature 40 °F 31 °F  
Max Temperature 46 °F 40 °F 54 °F (1980)
Min Temperature 33 °F 23 °F -6 °F (1949)
Degree Days  
Heating Degree Days 25 34  
Month to date heating degree days 259 290  
Since 1 July heating degree days 1596 1781  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 492 359  
Moisture  
Dew Point 30 °F    
Average Humidity 71    
Maximum Humidity 100    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.14 in 1.38 in (1973)
Month to date precipitation 0.57 1.26  
Year to date precipitation 46.74 44.49  
Snow  
Snow 0.00 in 0.30 in 13.90 in (2005)
Month to date snowfall 0.3 2.7  
Since 1 July snowfall 3.2 4.6  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.18 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 24 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 09, 2012 Rise Set
Actual Time 7:03 AM EST 4:04 PM EST
Civil Twilight 6:30 AM EST 4:36 PM EST
Nautical Twilight 5:54 AM EST 5:13 PM EST
Astronomical Twilight 5:19 AM EST 5:47 PM EST
Moon 2:26 AM EST (12/9) 1:14 PM EST (12/9)
Length of Visible Light 10h 06m
Length of Day
9h 01m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:51 AM 39.9 °F 35.1 °F 37.9 °F 93% 29.92 in 8.0 mi WSW 6.9 mph - N/A   Overcast
1:51 AM 39.9 °F 35.8 °F 39.0 °F 97% 29.96 in 8.0 mi WSW 5.8 mph - N/A   Overcast
2:51 AM 39.0 °F 36.8 °F 37.9 °F 96% 29.98 in 7.0 mi West 3.5 mph - N/A   Scattered Clouds
3:51 AM 37.0 °F 34.5 °F 35.1 °F 93% 30.00 in 9.0 mi West 3.5 mph - N/A   Clear
4:51 AM 36.0 °F 32.1 °F 35.1 °F 97% 30.04 in 10.0 mi WNW 4.6 mph - N/A   Clear
5:51 AM 34.0 °F 31.0 °F 33.1 °F 96% 30.09 in 8.0 mi WNW 3.5 mph - N/A   Clear
6:51 AM 34.0 °F - 32.0 °F 92% 30.13 in 10.0 mi North - - N/A   Clear
6:54 AM 33.8 °F 27.7 °F 30.2 °F 87% 30.13 in 10.0 mi West 6.9 mph - N/A   Clear
7:51 AM 37.9 °F 32.7 °F 33.1 °F 83% 30.18 in 10.0 mi West 6.9 mph - N/A   Clear
8:51 AM 39.9 °F 33.9 °F 32.0 °F 73% 30.22 in 10.0 mi NW 9.2 mph - N/A   Clear
9:51 AM 44.1 °F 39.0 °F 33.1 °F 65% 30.24 in 10.0 mi WNW 9.2 mph - N/A   Clear
10:51 AM 43.0 °F 38.8 °F 30.9 °F 62% 30.24 in 10.0 mi WNW 6.9 mph - N/A   Clear
11:51 AM 45.0 °F 39.7 °F 30.9 °F 58% 30.23 in 10.0 mi North 10.4 mph - N/A   Clear
12:51 PM 45.0 °F 41.8 °F 26.1 °F 48% 30.23 in 10.0 mi Variable 5.8 mph - N/A   Clear
1:51 PM 46.0 °F 41.4 °F 27.0 °F 47% 30.23 in 10.0 mi WNW 9.2 mph - N/A   Clear
2:51 PM 46.0 °F 41.9 °F 25.0 °F 44% 30.26 in 10.0 mi WNW 8.1 mph - N/A   Clear
3:51 PM 44.1 °F 39.5 °F 25.0 °F 47% 30.27 in 10.0 mi WNW 8.1 mph - N/A   Clear
4:51 PM 37.0 °F 33.3 °F 26.1 °F 65% 30.29 in 10.0 mi NNW 4.6 mph - N/A   Clear
5:51 PM 34.0 °F - 26.1 °F 73% 30.30 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:51 PM 35.1 °F 29.3 °F 28.9 °F 78% 30.32 in 10.0 mi NE 6.9 mph - N/A   Clear
7:51 PM 36.0 °F 33.3 °F 25.0 °F 64% 30.32 in 10.0 mi NE 3.5 mph - N/A   Clear
8:51 PM 37.0 °F 33.3 °F 28.0 °F 70% 30.30 in 10.0 mi ENE 4.6 mph - N/A   Clear
9:51 PM 37.0 °F 34.5 °F 26.1 °F 65% 30.27 in 10.0 mi ENE 3.5 mph - N/A   Overcast
10:51 PM 37.0 °F 32.4 °F 27.0 °F 67% 30.25 in 10.0 mi NNE 5.8 mph - N/A   Overcast
11:51 PM 37.4 °F 32.8 °F 28.4 °F 70% 30.22 in 10.0 mi NNE 5.8 mph - N/A   Overcast