Weather History for Islip, NY

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Wednesday, February 20, 2013

  Actual Average Record
Temperature  
Mean Temperature 33 °F 34 °F  
Max Temperature 40 °F 41 °F 54 °F (1991)
Min Temperature 25 °F 26 °F 10 °F (1993)
Degree Days  
Heating Degree Days 32 31  
Month to date heating degree days 696 658  
Since 1 July heating degree days 3393 3650  
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 52    
Maximum Humidity 64    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.11 in 0.57 in (1988)
Month to date precipitation 4.20 2.21  
Year to date precipitation 6.42 5.85  
Snow  
Snow 0.00 in 0.30 in 0.80 in (2005)
Month to date snowfall 31.2 5.1  
Since 1 July snowfall 39.3 17.7  
Snow Depth 4.00 in    
Sea Level Pressure  
Sea Level Pressure 29.81 in    
Wind  
Wind Speed 17 mph (WNW)    
Max Wind Speed 28 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 20, 2013 Rise Set
Actual Time 6:39 AM EST 5:33 PM EST
Civil Twilight 6:11 AM EST 6:01 PM EST
Nautical Twilight 5:39 AM EST 6:33 PM EST
Astronomical Twilight 5:07 AM EST 7:04 PM EST
Moon 12:51 PM EST (2/20) 2:58 AM EST (2/20)
Length of Visible Light 11h 49m
Length of Day
10h 54m
Waxing Gibbous, 76% of the Moon is Illuminated
Feb 20
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
12:56 AM 37.9 °F 27.6 °F 24.1 °F 57% 29.68 in 10.0 mi West 20.7 mph 26.5 mph N/A   Clear
1:56 AM 36.0 °F 27.5 °F 21.0 °F 55% 29.69 in 10.0 mi West 12.7 mph - N/A   Clear
2:56 AM 35.1 °F 26.4 °F 19.9 °F 54% 29.69 in 10.0 mi West 12.7 mph - N/A   Clear
3:56 AM 34.0 °F 24.2 °F 19.0 °F 54% 29.70 in 10.0 mi West 15.0 mph 23.0 mph N/A   Clear
4:56 AM 33.1 °F 24.4 °F 19.0 °F 56% 29.72 in 10.0 mi West 11.5 mph 19.6 mph N/A   Clear
7:56 AM 32.0 °F 22.5 °F 16.0 °F 52% 29.78 in 10.0 mi West 12.7 mph 21.9 mph N/A   Scattered Clouds
8:56 AM 32.0 °F 21.2 °F 16.0 °F 52% 29.79 in 10.0 mi West 16.1 mph 23.0 mph N/A   Mostly Cloudy
9:56 AM 32.0 °F 19.5 °F 16.0 °F 52% 29.80 in 10.0 mi West 21.9 mph 27.6 mph N/A   Mostly Cloudy
10:56 AM 32.0 °F 20.1 °F 12.9 °F 45% 29.80 in 10.0 mi West 19.6 mph 28.8 mph N/A   Mostly Cloudy
11:56 AM 33.1 °F 21.5 °F 12.0 °F 42% 29.79 in 10.0 mi WNW 19.6 mph 31.1 mph N/A   Scattered Clouds
12:56 PM 32.0 °F 21.2 °F 10.9 °F 42% 29.79 in 10.0 mi West 16.1 mph 19.6 mph N/A   Mostly Cloudy
1:56 PM 32.0 °F 20.8 °F 10.9 °F 42% 29.79 in 10.0 mi West 17.3 mph 25.3 mph N/A   Mostly Cloudy
2:56 PM 30.9 °F 17.8 °F 10.9 °F 43% 29.80 in 10.0 mi WNW 23.0 mph 33.4 mph N/A   Mostly Cloudy
3:56 PM 30.9 °F 18.4 °F 10.9 °F 43% 29.81 in 10.0 mi West 20.7 mph 29.9 mph N/A   Mostly Cloudy
4:56 PM 30.9 °F 19.4 °F 10.0 °F 42% 29.83 in 10.0 mi WNW 17.3 mph 26.5 mph N/A   Mostly Cloudy
5:56 PM 28.9 °F 17.7 °F 10.9 °F 47% 29.85 in 10.0 mi WNW 15.0 mph 24.2 mph N/A   Mostly Cloudy
6:56 PM 28.9 °F 16.9 °F 10.9 °F 47% 29.87 in 10.0 mi West 17.3 mph 24.2 mph N/A   Mostly Cloudy
7:56 PM 28.0 °F 14.6 °F 10.0 °F 47% 29.89 in 10.0 mi WNW 20.7 mph 28.8 mph N/A   Scattered Clouds
8:56 PM 27.0 °F 12.8 °F 8.1 °F 45% 29.89 in 10.0 mi WNW 21.9 mph 31.1 mph N/A   Partly Cloudy
9:56 PM 26.1 °F 13.6 °F 8.1 °F 47% 29.91 in 10.0 mi WNW 16.1 mph 29.9 mph N/A   Partly Cloudy
10:56 PM 24.8 °F 12.9 °F 8.6 °F 50% 29.93 in 10.0 mi West 13.8 mph 21.9 mph N/A   Clear
11:56 PM 25.0 °F 12.6 °F 10.0 °F 53% 29.94 in 10.0 mi WNW 15.0 mph 25.3 mph N/A   Partly Cloudy