Weather History for Portsmouth, NH

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Saturday, September 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 60 °F -  
Max Temperature 73 °F 68 °F 91 °F (1978)
Min Temperature 48 °F 50 °F 34 °F (1973)
Degree Days  
Heating Degree Days 5    
Growing Degree Days 10 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 93    
Maximum Humidity 100    
Minimum Humidity 67    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.93 in    
Wind  
Wind Speed 5 mph (South)    
Max Wind Speed 14 mph    
Max Gust Speed -    
Visibility 4 miles    
Events Fog    
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

Sep. 21, 2013 Rise Set
Actual Time 6:29 AM EDT 6:42 PM EDT
Civil Twilight 6:01 AM EDT 7:10 PM EDT
Nautical Twilight 5:27 AM EDT 7:43 PM EDT
Astronomical Twilight 4:53 AM EDT 8:17 PM EDT
Moon 7:45 PM EDT 8:49 AM EDT
Length of Visible Light 13h 09m
Length of Day
12h 12m
Waning Gibbous, 94% of the Moon is Illuminated
Sep 21
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:12 AM 53.6 °F 53.6 °F 100% 30.00 in 1.0 mi West 3.5 mph - N/A   Mostly Cloudy
12:25 AM 53.6 °F 53.6 °F 100% 30.00 in 0.5 mi West 3.5 mph - N/A Fog Fog
12:31 AM 53.6 °F 53.6 °F 100% 30.01 in 0.2 mi WNW 3.5 mph - N/A Fog Fog
12:51 AM 53.6 °F 53.6 °F 100% 30.01 in 0.1 mi NNW 6.9 mph - N/A Fog Fog
12:58 AM 54.5 °F 54.3 °F 99% 30.03 in 0.1 mi NW 4.6 mph - N/A Fog Fog
1:58 AM 55.0 °F 54.9 °F 99% 30.02 in 0.1 mi Calm Calm - N/A Fog Fog
2:58 AM 53.2 °F 53.1 °F 99% 30.01 in 0.1 mi South 2.3 mph - N/A Fog Fog
3:58 AM 51.4 °F 51.1 °F 99% 30.01 in 0.2 mi SW 4.6 mph - N/A Fog Fog
4:47 AM 50.0 °F 50.0 °F 100% 29.99 in 0.5 mi SSW 2.3 mph - N/A Fog Fog
4:58 AM 50.4 °F 50.0 °F 99% 30.01 in 1.0 mi SW 2.3 mph - N/A   Mostly Cloudy
5:24 AM 50.0 °F 50.0 °F 100% 29.99 in 3.0 mi SSE 2.3 mph - N/A   Mostly Cloudy
5:43 AM 48.2 °F 48.2 °F 100% 29.99 in 2.0 mi SSE 1.2 mph - N/A   Mostly Cloudy
5:58 AM 48.2 °F 47.8 °F 99% 29.99 in 1.2 mi ESE 2.3 mph - N/A   Mostly Cloudy
6:58 AM 49.5 °F 49.3 °F 99% 29.99 in 1.2 mi NNE 1.2 mph - N/A   Overcast
7:13 AM 50.0 °F 50.0 °F 100% 29.98 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
7:28 AM 51.8 °F 51.8 °F 100% 29.97 in 2.0 mi SE 1.2 mph - N/A   Mostly Cloudy
7:58 AM 54.9 °F 54.9 °F 100% 30.00 in 0.5 mi SSW 2.3 mph - N/A Fog Fog
8:28 AM 55.4 °F 55.4 °F 100% 29.99 in 1.0 mi WSW 4.6 mph - N/A   Mist
8:43 AM 55.4 °F 55.4 °F 100% 29.99 in 1.5 mi WSW 3.5 mph - N/A   Overcast
8:58 AM 56.3 °F 56.3 °F 100% 30.00 in 1.5 mi SW 3.5 mph - N/A   Overcast
9:18 AM 57.2 °F 57.2 °F 100% 29.99 in 2.0 mi WSW 2.3 mph - N/A   Overcast
9:45 AM 57.2 °F 57.2 °F 100% 29.98 in 3.0 mi SW 3.5 mph - N/A   Overcast
9:58 AM 59.0 °F 59.0 °F 100% 29.98 in 4.0 mi Variable 3.5 mph - N/A   Overcast
10:58 AM 62.4 °F 62.4 °F 100% 29.96 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
11:58 AM 68.2 °F 60.6 °F 77% 29.93 in 10.0 mi SSE 9.2 mph - N/A   Mostly Cloudy
12:58 PM 67.8 °F 60.3 °F 77% 29.90 in 10.0 mi SE 10.4 mph - N/A   Mostly Cloudy
1:58 PM 70.9 °F 60.4 °F 69% 29.88 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
2:58 PM 70.3 °F 59.7 °F 69% 29.85 in 10.0 mi SSE 13.8 mph - N/A   Mostly Cloudy
3:58 PM 72.7 °F 61.3 °F 67% 29.83 in 10.0 mi SE 11.5 mph - N/A   Mostly Cloudy
4:58 PM 72.1 °F 60.8 °F 67% 29.81 in 10.0 mi SSE 13.8 mph - N/A   Mostly Cloudy
5:58 PM 69.1 °F 59.5 °F 72% 29.80 in 10.0 mi SSE 13.8 mph - N/A   Mostly Cloudy
6:58 PM 65.7 °F 59.0 °F 79% 29.80 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
7:58 PM 64.4 °F 59.9 °F 85% 29.81 in 10.0 mi SE 9.2 mph - N/A   Mostly Cloudy
8:58 PM 64.9 °F 61.3 °F 88% 29.80 in 10.0 mi SSE 10.4 mph - N/A   Mostly Cloudy
9:58 PM 65.1 °F 62.8 °F 92% 29.77 in 10.0 mi SSE 10.4 mph - N/A   Mostly Cloudy
10:58 PM 64.2 °F 62.8 °F 95% 29.76 in 10.0 mi SSE 11.5 mph - N/A   Mostly Cloudy
11:58 PM 63.9 °F 62.8 °F 96% 29.74 in 10.0 mi SE 8.1 mph - N/A   Overcast