Islip, NY

2:47 PM EDT on May 29, 2017 (GMT -0400)
Long Island Mac Arthur

Weather History for KISP - December, 2011

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Tuesday, December 20, 2011

  Actual Average Record
Temperature  
Mean Temperature 43 °F 34 °F  
Max Temperature 47 °F 42 °F 58 °F (1999)
Min Temperature 39 °F 27 °F 8 °F (1985)
Degree Days  
Heating Degree Days 22 31  
Month to date heating degree days 481 556  
Since 1 July heating degree days 1215 1572  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1082 787  
Moisture  
Dew Point 27 °F    
Average Humidity 52    
Maximum Humidity 65    
Minimum Humidity 39    
Precipitation  
Precipitation T in 0.13 in 1.34 in (1995)
Month to date precipitation 1.50 2.71  
Year to date precipitation 50.88 44.89  
Snow  
Snow 0.00 in 0.20 in 14.30 in (2009)
Month to date snowfall T 2.9  
Since 1 July snowfall 0.3 3.4  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 6 mph (NNW)    
Max Wind Speed 17 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 20, 2011 Rise Set
Actual Time 7:12 AM EST 4:27 PM EST
Civil Twilight 6:41 AM EST 4:58 PM EST
Nautical Twilight 6:06 AM EST 5:32 PM EST
Astronomical Twilight 5:33 AM EST 6:06 PM EST
Moon 2:29 AM EST (12/20) 1:02 PM EST (12/20)
Length of Visible Light 10h 16m
Length of Day
9h 14m
Waning Crescent, 21% of the Moon is Illuminated
Dec 20
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 46.0 °F 41.0 °F 30.0 °F 54% 29.95 in 10.0 mi West 10.4 mph - N/A   Overcast
1:56 AM 46.9 °F - 30.0 °F 52% 29.96 in 10.0 mi West 11.5 mph - N/A   Overcast
2:56 AM 46.0 °F 41.0 °F 32.0 °F 58% 29.97 in 10.0 mi West 10.4 mph - N/A   Overcast
3:56 AM 46.9 °F - 34.0 °F 61% 29.99 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
4:56 AM 46.9 °F - 34.0 °F 61% 29.99 in 10.0 mi West 9.2 mph - N/A   Scattered Clouds
5:56 AM 46.9 °F - 35.1 °F 63% 30.01 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
6:56 AM 46.0 °F 41.9 °F 36.0 °F 68% 30.05 in 10.0 mi NW 8.1 mph - 0.00 in   Overcast
7:56 AM 46.0 °F 39.3 °F 32.0 °F 58% 30.09 in 10.0 mi NNW 16.1 mph - N/A   Overcast
8:56 AM 45.0 °F 40.1 °F 33.1 °F 63% 30.13 in 10.0 mi North 9.2 mph - N/A   Overcast
9:56 AM 44.1 °F 39.5 °F 32.0 °F 63% 30.14 in 10.0 mi North 8.1 mph - N/A   Overcast
10:56 AM 44.1 °F 38.6 °F 30.0 °F 58% 30.14 in 10.0 mi North 10.4 mph - N/A   Overcast
11:56 AM 43.0 °F 38.8 °F 27.0 °F 53% 30.13 in 10.0 mi North 6.9 mph - N/A   Overcast
12:56 PM 44.1 °F 39.0 °F 26.1 °F 49% 30.13 in 10.0 mi NNW 9.2 mph - N/A   Overcast
1:56 PM 44.1 °F 39.0 °F 23.0 °F 43% 30.14 in 10.0 mi North 9.2 mph - N/A   Overcast
2:56 PM 43.0 °F 39.5 °F 21.0 °F 42% 30.15 in 10.0 mi North 5.8 mph - N/A   Overcast
3:56 PM 42.1 °F 38.4 °F 19.0 °F 40% 30.15 in 10.0 mi North 5.8 mph - N/A   Overcast
4:56 PM 42.1 °F - 19.0 °F 40% 30.16 in 10.0 mi Calm Calm - N/A   Overcast
5:56 PM 39.9 °F - 21.9 °F 49% 30.18 in 10.0 mi Calm Calm - N/A   Overcast
6:56 PM 39.9 °F 37.8 °F 24.1 °F 53% 30.19 in 10.0 mi ENE 3.5 mph - N/A   Overcast
7:56 PM 39.9 °F - 19.9 °F 45% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
8:56 PM 41.0 °F - 19.9 °F 43% 30.19 in 10.0 mi Calm Calm - N/A   Overcast
9:44 PM 41.0 °F 39.0 °F 21.2 °F 45% 30.19 in 10.0 mi SSE 3.5 mph - N/A   Overcast
9:56 PM 41.0 °F - 23.0 °F 49% 30.20 in 10.0 mi Calm Calm - N/A   Overcast
10:56 PM 39.9 °F 37.8 °F 26.1 °F 58% 30.19 in 10.0 mi East 3.5 mph - N/A   Overcast
11:32 PM 39.2 °F 37.0 °F 26.6 °F 61% 30.18 in 10.0 mi ENE 3.5 mph - N/A   Overcast
11:56 PM 41.0 °F - 23.0 °F 49% 30.18 in 10.0 mi Calm Calm - N/A   Overcast