Weather History for Portland, ME

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Friday, January 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 15 °F 22 °F  
Max Temperature 20 °F 31 °F 58 °F (1990)
Min Temperature 9 °F 13 °F -22 °F (1971)
Degree Days  
Heating Degree Days 50 43  
Month to date heating degree days 669 764  
Since 1 July heating degree days 3019 3376  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point -6 °F    
Average Humidity 40    
Maximum Humidity 51    
Minimum Humidity 28    
Precipitation  
Precipitation 0.00 in 0.11 in 1.47 in (1926)
Month to date precipitation 0.65 1.98  
Year to date precipitation 0.65 1.98  
Snow  
Snow 0.00 in 0.60 in 11.50 in (2009)
Month to date snowfall 5.2 11.4  
Since 1 July snowfall 32.9 26.5  
Snow Depth 6.00 in    
Sea Level Pressure  
Sea Level Pressure 30.29 in    
Wind  
Wind Speed 9 mph (WNW)    
Max Wind Speed 20 mph    
Max Gust Speed 27 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 18, 2013 Rise Set
Actual Time 7:09 AM EST 4:34 PM EST
Civil Twilight 6:38 AM EST 5:05 PM EST
Nautical Twilight 6:02 AM EST 5:40 PM EST
Astronomical Twilight 5:28 AM EST 6:15 PM EST
Moon 10:30 AM EST (1/18) No Moon Set
Length of Visible Light 10h 27m
Length of Day
9h 24m
Waxing Crescent, 47% of the Moon is Illuminated
Jan 18
Waxing Crescent
Jan 18
First Quarter
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New

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 17.1 °F 5.0 °F -0.0 °F 47% 30.13 in 10.0 mi NE 10.4 mph - N/A   Partly Cloudy
1:51 AM 16.0 °F 4.4 °F -2.9 °F 43% 30.12 in 10.0 mi North 9.2 mph - N/A   Scattered Clouds
2:51 AM 16.0 °F 5.3 °F -4.0 °F 41% 30.14 in 10.0 mi NE 8.1 mph - N/A   Overcast
3:51 AM 15.1 °F 3.3 °F -4.0 °F 43% 30.14 in 10.0 mi North 9.2 mph - N/A   Overcast
4:51 AM 14.0 °F 1.2 °F -5.1 °F 43% 30.15 in 10.0 mi NNE 10.4 mph - N/A   Clear
5:51 AM 12.0 °F -2.0 °F -7.1 °F 42% 30.19 in 10.0 mi North 11.5 mph - N/A   Clear
6:51 AM 10.0 °F -1.9 °F -8.0 °F 44% 30.22 in 10.0 mi North 8.1 mph - N/A   Clear
7:51 AM 10.0 °F -1.9 °F -11.9 °F 37% 30.27 in 10.0 mi NNW 8.1 mph - N/A   Clear
8:51 AM 12.0 °F -1.3 °F -14.1 °F 30% 30.29 in 10.0 mi NNW 10.4 mph - N/A   Clear
9:51 AM 12.9 °F 5.2 °F -9.9 °F 35% 30.31 in 10.0 mi WNW 4.6 mph - N/A   Clear
10:51 AM 15.1 °F 6.4 °F -9.9 °F 32% 30.31 in 10.0 mi Variable 5.8 mph - N/A   Clear
11:51 AM 16.0 °F 6.3 °F -9.0 °F 32% 30.29 in 10.0 mi NW 6.9 mph - N/A   Clear
12:51 PM 18.0 °F 3.6 °F -8.0 °F 31% 30.30 in 10.0 mi WNW 15.0 mph - N/A   Clear
1:51 PM 19.9 °F 6.7 °F -9.9 °F 26% 30.31 in 10.0 mi NW 13.8 mph 27.6 mph N/A   Clear
2:51 PM 19.9 °F 8.6 °F -9.0 °F 27% 30.32 in 10.0 mi WSW 10.4 mph - N/A   Clear
3:51 PM 19.0 °F 6.8 °F -7.1 °F 31% 30.36 in 10.0 mi West 11.5 mph - N/A   Clear
4:51 PM 18.0 °F 7.7 °F -5.1 °F 36% 30.34 in 10.0 mi West 8.1 mph - N/A   Clear
5:51 PM 17.1 °F 5.8 °F -6.0 °F 36% 30.38 in 10.0 mi WSW 9.2 mph - N/A   Clear
6:51 PM 16.0 °F 7.4 °F -5.1 °F 39% 30.39 in 10.0 mi SW 5.8 mph - N/A   Clear
7:51 PM 15.1 °F 7.7 °F -5.1 °F 41% 30.40 in 10.0 mi SSW 4.6 mph - N/A   Clear
8:51 PM 14.0 °F 8.2 °F -4.0 °F 45% 30.41 in 10.0 mi SW 3.5 mph - N/A   Clear
9:51 PM 15.1 °F 4.2 °F -4.0 °F 43% 30.40 in 10.0 mi SSW 8.1 mph - N/A   Clear
10:51 PM 14.0 °F 5.1 °F -2.0 °F 49% 30.39 in 10.0 mi SW 5.8 mph - N/A   Clear
11:51 PM 16.0 °F 4.4 °F -0.9 °F 47% 30.37 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy