Weather History for Portsmouth, NH

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 26 °F -  
Max Temperature 33 °F 33 °F 54 °F (1990)
Min Temperature 19 °F 19 °F 1 °F (1996)
Degree Days  
Heating Degree Days 39    
Moisture  
Dew Point 15 °F    
Average Humidity 61    
Maximum Humidity 71    
Minimum Humidity 52    
Precipitation  
Precipitation 0.00 in - - ()
Snow  
Snow 0.00 in - - ()
Snow Depth 4.00 in    
Sea Level Pressure  
Sea Level Pressure 29.88 in    
Wind  
Wind Speed 13 mph (WSW)    
Max Wind Speed 24 mph    
Max Gust Speed 41 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 31, 2012 Rise Set
Actual Time 7:14 AM EST 4:18 PM EST
Civil Twilight 6:42 AM EST 4:50 PM EST
Nautical Twilight 6:06 AM EST 5:26 PM EST
Astronomical Twilight 5:32 AM EST 6:01 PM EST
Moon 7:51 PM EST (12/31) 8:49 AM EST (12/31)
Length of Visible Light 10h 08m
Length of Day
9h 03m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:55 AM 19.2 °F 3.0 °F 5.0 °F 54% 29.90 in 10.0 mi WNW 20.7 mph 31.1 mph N/A   Clear
1:55 AM 19.9 °F 2.8 °F 6.4 °F 56% 29.90 in 10.0 mi NW 24.2 mph 41.4 mph N/A   Clear
2:55 AM 20.8 °F 6.4 °F 5.9 °F 53% 29.92 in 10.0 mi NW 17.3 mph - N/A   Clear
3:55 AM 21.4 °F 9.1 °F 6.1 °F 52% 29.93 in 10.0 mi WNW 12.7 mph 20.7 mph N/A   Clear
4:55 AM 21.2 °F 10.9 °F 7.0 °F 54% 29.94 in 10.0 mi West 9.2 mph - N/A   Clear
5:55 AM 20.5 °F 8.0 °F 9.1 °F 62% 29.95 in 10.0 mi WSW 12.7 mph - N/A   Clear
6:55 AM 21.2 °F 11.7 °F 10.8 °F 64% 29.96 in 10.0 mi WSW 8.1 mph 18.4 mph N/A   Partly Cloudy
7:55 AM 21.9 °F 11.0 °F 11.3 °F 64% 29.96 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
8:55 AM 22.6 °F 11.9 °F 10.9 °F 61% 29.97 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
9:55 AM 24.3 °F 13.9 °F 12.2 °F 60% 29.97 in 10.0 mi WSW 10.4 mph - N/A   Mostly Cloudy
10:55 AM 27.7 °F 20.4 °F 14.0 °F 57% 29.95 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
11:55 AM 30.6 °F 21.2 °F 15.4 °F 54% 29.92 in 10.0 mi WSW 11.5 mph - N/A   Mostly Cloudy
12:55 PM 33.1 °F 24.4 °F 18.0 °F 54% 29.89 in 10.0 mi West 11.5 mph - N/A   Mostly Cloudy
1:55 PM 33.8 °F 26.4 °F 18.7 °F 54% 29.87 in 10.0 mi West 9.2 mph - N/A   Mostly Cloudy
2:55 PM 32.5 °F 25.5 °F 19.9 °F 60% 29.87 in 10.0 mi West 8.1 mph - N/A   Overcast
3:55 PM 32.9 °F 25.3 °F 21.4 °F 63% 29.87 in 10.0 mi WSW 9.2 mph - N/A   Overcast
4:55 PM 32.4 °F 26.9 °F 21.9 °F 65% 29.86 in 10.0 mi WSW 5.8 mph - N/A   Overcast
5:55 PM 31.1 °F 23.7 °F 21.7 °F 68% 29.83 in 10.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
6:55 PM 30.6 °F 23.8 °F 21.9 °F 70% 29.83 in 10.0 mi SW 6.9 mph - N/A   Mostly Cloudy
7:55 PM 29.5 °F 22.5 °F 21.0 °F 71% 29.82 in 10.0 mi SW 6.9 mph - N/A   Overcast
8:55 PM 29.8 °F 23.0 °F 21.0 °F 70% 29.79 in 10.0 mi SW 6.9 mph - N/A   Overcast
9:55 PM 30.2 °F 22.6 °F 20.3 °F 67% 29.78 in 10.0 mi WSW 8.1 mph - N/A   Overcast
10:55 PM 30.4 °F 22.2 °F 20.1 °F 66% 29.75 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
11:55 PM 30.7 °F 24.1 °F 19.9 °F 64% 29.73 in 10.0 mi WSW 6.9 mph - N/A   Overcast