Weather History for Islip, NY

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Thursday, January 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 39 °F 30 °F  
Max Temperature 44 °F 38 °F 55 °F (1999)
Min Temperature 34 °F 23 °F 2 °F (2009)
Degree Days  
Heating Degree Days 26 35  
Month to date heating degree days 474 583  
Since 1 July heating degree days 2187 2510  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 27 °F    
Average Humidity 69    
Maximum Humidity 92    
Minimum Humidity 45    
Precipitation  
Precipitation 0.00 in 0.13 in 0.70 in (1994)
Month to date precipitation 1.50 2.07  
Year to date precipitation 1.50 2.07  
Snow  
Snow 0.00 in 0.30 in 4.70 in (1985)
Month to date snowfall 0.1 3.8  
Since 1 July snowfall 4.9 9.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.00 in    
Wind  
Wind Speed 9 mph (NW)    
Max Wind Speed 20 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 17, 2013 Rise Set
Actual Time 7:13 AM EST 4:52 PM EST
Civil Twilight 6:43 AM EST 5:22 PM EST
Nautical Twilight 6:09 AM EST 5:55 PM EST
Astronomical Twilight 5:37 AM EST 6:28 PM EST
Moon 10:16 AM EST (1/17) 11:43 PM EST (1/17)
Length of Visible Light 10h 38m
Length of Day
9h 38m
Waxing Crescent, 37% of the Moon is Illuminated
Jan 17
Waxing Crescent
Jan 18
First Quarter
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New

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 36.0 °F 32.1 °F 34.0 °F 93% 29.91 in 9.0 mi WSW 4.6 mph - N/A   Overcast
1:56 AM 37.0 °F 33.3 °F 34.0 °F 89% 29.91 in 9.0 mi SSW 4.6 mph - N/A   Overcast
2:56 AM 36.0 °F 32.1 °F 34.0 °F 93% 29.92 in 8.0 mi SW 4.6 mph - N/A   Overcast
3:56 AM 36.0 °F 33.3 °F 33.1 °F 89% 29.91 in 10.0 mi SSW 3.5 mph - N/A   Mostly Cloudy
4:56 AM 35.1 °F 32.2 °F 32.0 °F 89% 29.91 in 10.0 mi SW 3.5 mph - N/A   Overcast
5:56 AM 35.1 °F 30.1 °F 32.0 °F 89% 29.92 in 10.0 mi West 5.8 mph - N/A   Overcast
6:56 AM 35.1 °F 30.1 °F 30.9 °F 85% 29.96 in 10.0 mi WSW 5.8 mph - N/A   Mostly Cloudy
7:56 AM 37.0 °F 32.4 °F 30.0 °F 76% 29.99 in 10.0 mi WNW 5.8 mph - N/A   Mostly Cloudy
8:56 AM 39.0 °F 31.4 °F 28.0 °F 65% 30.02 in 10.0 mi WNW 12.7 mph - N/A   Mostly Cloudy
9:56 AM 39.9 °F 31.4 °F 27.0 °F 60% 30.03 in 10.0 mi NW 16.1 mph - N/A   Overcast
10:56 AM 41.0 °F 33.9 °F 26.1 °F 55% 30.03 in 10.0 mi NW 12.7 mph 20.7 mph N/A   Overcast
11:56 AM 42.1 °F 34.9 °F 26.1 °F 53% 30.03 in 10.0 mi NW 13.8 mph - N/A   Mostly Cloudy
12:56 PM 42.1 °F 35.7 °F 26.1 °F 53% 30.02 in 10.0 mi NW 11.5 mph 19.6 mph N/A   Mostly Cloudy
1:56 PM 43.0 °F 36.8 °F 25.0 °F 49% 30.03 in 10.0 mi NW 11.5 mph - N/A   Overcast
2:56 PM 42.1 °F 34.2 °F 23.0 °F 47% 30.01 in 10.0 mi NW 16.1 mph 20.7 mph N/A   Overcast
3:56 PM 42.1 °F 37.1 °F 25.0 °F 51% 30.04 in 10.0 mi NW 8.1 mph - N/A   Overcast
4:56 PM 41.0 °F 37.1 °F 25.0 °F 53% 30.06 in 10.0 mi NW 5.8 mph - N/A   Overcast
5:56 PM 39.9 °F 35.8 °F 26.1 °F 58% 30.06 in 10.0 mi WNW 5.8 mph - N/A   Overcast
6:56 PM 39.9 °F 35.8 °F 26.1 °F 58% 30.06 in 10.0 mi NW 5.8 mph - N/A   Overcast
7:56 PM 39.0 °F 34.0 °F 27.0 °F 62% 30.06 in 10.0 mi NNW 6.9 mph - N/A   Overcast
8:56 PM 39.0 °F 36.8 °F 27.0 °F 62% 30.04 in 10.0 mi North 3.5 mph - N/A   Overcast
9:40 PM 37.4 °F 28.5 °F 26.6 °F 65% 30.05 in 10.0 mi NNE 15.0 mph 19.6 mph N/A   Overcast
9:56 PM 36.0 °F 27.5 °F 25.0 °F 64% 30.04 in 10.0 mi NE 12.7 mph - N/A   Overcast
10:53 PM 35.6 °F 27.5 °F 21.2 °F 56% 30.03 in 10.0 mi NNE 11.5 mph - N/A   Overcast
10:56 PM 35.1 °F 26.4 °F 21.0 °F 57% 30.04 in 10.0 mi NNE 12.7 mph - N/A   Overcast
11:56 PM 34.0 °F 26.0 °F 21.0 °F 59% 30.02 in 10.0 mi North 10.4 mph - N/A   Overcast