Weather History for Islip, NY

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Monday, February 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 25 °F 33 °F  
Max Temperature 32 °F 41 °F 60 °F (2011)
Min Temperature 17 °F 26 °F 15 °F (2006)
Degree Days  
Heating Degree Days 40 32  
Month to date heating degree days 633 595  
Since 1 July heating degree days 3330 3587  
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 37    
Maximum Humidity 55    
Minimum Humidity 19    
Precipitation  
Precipitation 0.00 in 0.12 in 0.93 in (1999)
Month to date precipitation 3.87 1.98  
Year to date precipitation 6.09 5.62  
Snow  
Snow 0.00 in 0.30 in 0.10 in (2004)
Month to date snowfall 31.2 4.5  
Since 1 July snowfall 39.3 17.1  
Snow Depth 7.00 in    
Sea Level Pressure  
Sea Level Pressure 30.13 in    
Wind  
Wind Speed 15 mph (WNW)    
Max Wind Speed 31 mph    
Max Gust Speed 40 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 18, 2013 Rise Set
Actual Time 6:42 AM EST 5:31 PM EST
Civil Twilight 6:14 AM EST 5:58 PM EST
Nautical Twilight 5:42 AM EST 6:30 PM EST
Astronomical Twilight 5:10 AM EST 7:02 PM EST
Moon 11:13 AM EST (2/18) 1:20 AM EST (2/18)
Length of Visible Light 11h 44m
Length of Day
10h 48m
First Quarter, 58% of the Moon is Illuminated
Feb 18
First Quarter
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 17.1 °F 0.1 °F 1.9 °F 52% 29.92 in 10.0 mi WNW 20.7 mph 38.0 mph N/A   Clear
1:56 AM 18.0 °F 0.6 °F 1.9 °F 50% 29.94 in 10.0 mi NW 23.0 mph 36.8 mph N/A   Clear
2:56 AM 18.0 °F 0.9 °F 3.0 °F 52% 29.96 in 10.0 mi WNW 21.9 mph 32.2 mph N/A   Clear
3:56 AM 18.0 °F 0.2 °F 3.0 °F 52% 29.99 in 10.0 mi WNW 24.2 mph 34.5 mph N/A   Clear
4:56 AM 17.1 °F 2.0 °F 3.0 °F 54% 30.02 in 10.0 mi WNW 16.1 mph 29.9 mph N/A   Clear
6:56 AM 17.1 °F 1.0 °F 3.0 °F 54% 30.09 in 10.0 mi NW 18.4 mph 28.8 mph N/A   Partly Cloudy
7:56 AM 19.0 °F 2.0 °F 3.9 °F 52% 30.12 in 10.0 mi NW 23.0 mph 28.8 mph N/A   Clear
8:56 AM 21.0 °F 6.6 °F 5.0 °F 50% 30.14 in 10.0 mi NW 17.3 mph 29.9 mph N/A   Clear
9:56 AM 21.9 °F 7.8 °F 6.1 °F 51% 30.17 in 10.0 mi WNW 17.3 mph 27.6 mph N/A   Clear
10:56 AM 24.1 °F 10.1 °F 6.1 °F 46% 30.19 in 10.0 mi WNW 18.4 mph 24.2 mph N/A   Clear
11:56 AM 27.0 °F 13.5 °F 8.1 °F 45% 30.18 in 10.0 mi WNW 19.6 mph 25.3 mph N/A   Clear
12:56 PM 28.0 °F 15.3 °F 7.0 °F 41% 30.17 in 10.0 mi WNW 18.4 mph 24.2 mph N/A   Clear
1:56 PM 48.2 °F - 8.6 °F 20% 30.38 in 10.0 mi Calm Calm - N/A   Clear
2:56 PM 30.9 °F 19.8 °F 8.1 °F 38% 30.15 in 10.0 mi WNW 16.1 mph 20.7 mph N/A   Clear
3:56 PM 32.0 °F 21.2 °F 8.1 °F 37% 30.15 in 10.0 mi West 16.1 mph - N/A   Clear
4:56 PM 32.0 °F 22.1 °F 7.0 °F 35% 30.17 in 10.0 mi West 13.8 mph - N/A   Partly Cloudy
6:56 PM 28.9 °F 23.9 °F 7.0 °F 40% 30.19 in 10.0 mi WSW 4.6 mph - N/A   Partly Cloudy
7:56 PM 28.0 °F 21.7 °F 7.0 °F 41% 30.20 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
8:56 PM 27.0 °F 19.5 °F 8.1 °F 45% 30.20 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
9:56 PM 28.0 °F 22.8 °F 10.0 °F 47% 30.20 in 10.0 mi WSW 4.6 mph - N/A   Scattered Clouds
10:56 PM 27.0 °F 19.5 °F 12.0 °F 53% 30.22 in 10.0 mi WSW 6.9 mph - N/A   Mostly Cloudy
11:56 PM 28.9 °F 20.4 °F 14.0 °F 54% 30.22 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy