Weather History for Portland, ME

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Thursday, February 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 27 °F 27 °F  
Max Temperature 29 °F 36 °F 59 °F (1953)
Min Temperature 24 °F 18 °F -9 °F (1966)
Degree Days  
Heating Degree Days 38 38  
Month to date heating degree days 811 847  
Since 1 July heating degree days 4382 4783  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 13 °F    
Average Humidity 55    
Maximum Humidity 63    
Minimum Humidity 46    
Precipitation  
Precipitation T in 0.12 in 1.06 in (1898)
Month to date precipitation 3.69 2.37  
Year to date precipitation 5.05 5.75  
Snow  
Snow T in 0.40 in 14.50 in (1929)
Month to date snowfall 35.9 9.1  
Since 1 July snowfall 70.9 43.4  
Snow Depth 5.00 in    
Sea Level Pressure  
Sea Level Pressure 29.84 in    
Wind  
Wind Speed 14 mph (NW)    
Max Wind Speed 22 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 21, 2013 Rise Set
Actual Time 6:30 AM EST 5:19 PM EST
Civil Twilight 6:01 AM EST 5:48 PM EST
Nautical Twilight 5:27 AM EST 6:22 PM EST
Astronomical Twilight 4:54 AM EST 6:55 PM EST
Moon 1:26 PM EST (2/21) 3:37 AM EST (2/21)
Length of Visible Light 11h 47m
Length of Day
10h 49m
Waxing Gibbous, 83% of the Moon is Illuminated
Feb 21
Waxing Gibbous
Feb 25
Full
Mar 4
Last Quarter
Mar 11
New
Mar 19
First 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 27.0 °F 16.7 °F 15.1 °F 61% 29.67 in 10.0 mi West 11.5 mph - N/A   Clear
1:51 AM 27.0 °F 14.3 °F 14.0 °F 58% 29.68 in 10.0 mi West 17.3 mph 25.3 mph N/A   Clear
2:51 AM 26.1 °F 16.2 °F 15.1 °F 63% 29.68 in 10.0 mi West 10.4 mph - N/A   Clear
3:51 AM 26.1 °F 15.6 °F 14.0 °F 60% 29.68 in 10.0 mi WSW 11.5 mph - N/A   Clear
4:51 AM 25.0 °F 14.8 °F 14.0 °F 63% 29.69 in 10.0 mi West 10.4 mph - N/A   Clear
5:51 AM 25.0 °F 14.8 °F 12.9 °F 60% 29.71 in 10.0 mi West 10.4 mph - N/A   Scattered Clouds
6:51 AM 24.1 °F 13.1 °F 10.0 °F 55% 29.73 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
7:51 AM 24.1 °F 12.0 °F 8.1 °F 51% 29.75 in 10.0 mi WNW 13.8 mph - N/A   Clear
8:51 AM 24.1 °F 13.1 °F 9.0 °F 53% 29.76 in 10.0 mi WNW 11.5 mph - N/A   Clear
9:51 AM 25.0 °F 12.2 °F 8.1 °F 49% 29.77 in 10.0 mi North 16.1 mph - N/A   Clear
10:51 AM 27.0 °F 14.7 °F 9.0 °F 47% 29.77 in 10.0 mi NW 16.1 mph - N/A   Clear
11:51 AM 27.0 °F 14.3 °F 10.9 °F 51% 29.77 in 10.0 mi NNW 17.3 mph 24.2 mph N/A   Scattered Clouds
12:51 PM 27.0 °F 15.6 °F 14.0 °F 58% 29.79 in 9.0 mi NW 13.8 mph - 0.00 in   Overcast
1:51 PM 28.4 °F 16.6 °F 10.4 °F 47% 29.79 in 10.0 mi NW 16.1 mph 23.0 mph N/A   Overcast
2:51 PM 27.0 °F 15.6 °F 12.9 °F 56% 29.82 in 10.0 mi NNW 13.8 mph 28.8 mph N/A   Overcast
3:51 PM 27.0 °F 13.9 °F 12.9 °F 56% 29.84 in 10.0 mi NNW 18.4 mph 25.3 mph N/A   Overcast
4:51 PM 28.0 °F 14.9 °F 14.0 °F 56% 29.88 in 10.0 mi NW 19.6 mph 27.6 mph N/A   Mostly Cloudy
5:51 PM 28.0 °F 16.1 °F 14.0 °F 56% 29.93 in 10.0 mi NW 16.1 mph 29.9 mph N/A   Mostly Cloudy
6:51 PM 28.0 °F 16.1 °F 15.1 °F 58% 29.97 in 10.0 mi NNW 16.1 mph 28.8 mph N/A   Mostly Cloudy
7:51 PM 28.0 °F 16.5 °F 16.0 °F 61% 30.01 in 10.0 mi NW 15.0 mph 23.0 mph N/A   Mostly Cloudy
8:51 PM 28.9 °F 16.5 °F 17.1 °F 61% 30.05 in 10.0 mi NNW 18.4 mph 26.5 mph N/A   Mostly Cloudy
9:51 PM 28.9 °F 17.7 °F 17.1 °F 61% 30.09 in 10.0 mi NNW 15.0 mph - N/A   Scattered Clouds
10:51 PM 28.0 °F 17.5 °F 17.1 °F 63% 30.10 in 10.0 mi NNW 12.7 mph - N/A   Partly Cloudy
11:51 PM 28.0 °F 18.1 °F 17.1 °F 63% 30.14 in 10.0 mi NNW 11.5 mph - N/A   Clear