Weather History for Islip, NY

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Sunday, October 21, 2012

  Actual Average Record
Temperature  
Mean Temperature 55 °F 52 °F  
Max Temperature 65 °F 61 °F 74 °F (2007)
Min Temperature 44 °F 44 °F 32 °F (1991)
Degree Days  
Heating Degree Days 10 13  
Month to date heating degree days 151 201  
Since 1 July heating degree days 204 278  
Cooling Degree Days 0 0  
Month to date cooling degree days 15 9  
Year to date cooling degree days 993 786  
Growing Degree Days 5 (Base 50)    
Moisture  
Dew Point 40 °F    
Average Humidity 60    
Maximum Humidity 82    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in 0.12 in 1.51 in (1995)
Month to date precipitation 1.29 2.58  
Year to date precipitation 35.89 37.30  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.91 in    
Wind  
Wind Speed 8 mph (West)    
Max Wind Speed 18 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Oct. 21, 2012 Rise Set
Actual Time 7:10 AM EDT 6:02 PM EDT
Civil Twilight 6:42 AM EDT 6:30 PM EDT
Nautical Twilight 6:10 AM EDT 7:02 PM EDT
Astronomical Twilight 5:39 AM EDT 7:33 PM EDT
Moon 1:30 PM EDT (10/21) 11:53 PM EDT (10/21)
Length of Visible Light 11h 47m
Length of Day
10h 51m
Waxing Crescent, 45% of the Moon is Illuminated
Oct 21
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
New

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 50.0 °F - 39.9 °F 68% 29.83 in 10.0 mi West 3.5 mph - N/A   Clear
1:56 AM 48.0 °F - 39.9 °F 74% 29.83 in 10.0 mi West 4.6 mph - N/A   Clear
2:56 AM 50.0 °F - 39.0 °F 66% 29.84 in 10.0 mi WNW 6.9 mph - N/A   Clear
3:56 AM 50.0 °F - 39.0 °F 66% 29.84 in 10.0 mi West 6.9 mph - N/A   Clear
4:56 AM 46.9 °F - 39.0 °F 74% 29.86 in 10.0 mi West 5.8 mph - N/A   Clear
5:56 AM 46.0 °F 44.8 °F 39.9 °F 79% 29.88 in 10.0 mi West 3.5 mph - N/A   Clear
6:56 AM 46.0 °F 44.8 °F 39.9 °F 79% 29.90 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
7:56 AM 46.0 °F 43.9 °F 41.0 °F 83% 29.93 in 10.0 mi WSW 4.6 mph - N/A   Scattered Clouds
8:56 AM 53.1 °F - 43.0 °F 69% 29.94 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
9:56 AM 57.0 °F - 42.1 °F 57% 29.95 in 10.0 mi NW 12.7 mph - N/A   Partly Cloudy
10:56 AM 59.0 °F - 41.0 °F 51% 29.95 in 10.0 mi WNW 11.5 mph - N/A   Partly Cloudy
12:56 PM 63.0 °F - 41.0 °F 45% 29.93 in 10.0 mi West 15.0 mph 19.6 mph N/A   Partly Cloudy
1:56 PM 64.0 °F - 39.9 °F 41% 29.91 in 10.0 mi West 10.4 mph 21.9 mph N/A   Scattered Clouds
2:56 PM 64.0 °F - 39.0 °F 40% 29.91 in 10.0 mi WNW 17.3 mph - N/A   Scattered Clouds
3:56 PM 63.0 °F - 39.0 °F 41% 29.92 in 10.0 mi WNW 6.9 mph - N/A   Mostly Cloudy
4:56 PM 64.0 °F - 37.0 °F 37% 29.92 in 10.0 mi WNW 13.8 mph 23.0 mph N/A   Scattered Clouds
6:56 PM 55.9 °F - 39.9 °F 55% 29.95 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
7:56 PM 54.0 °F - 39.9 °F 59% 29.96 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
8:56 PM 55.0 °F - 39.9 °F 57% 29.97 in 10.0 mi West 5.8 mph - N/A   Clear
9:56 PM 52.0 °F - 39.9 °F 63% 29.98 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
10:56 PM 52.0 °F - 39.0 °F 61% 29.99 in 10.0 mi West 5.8 mph - N/A   Clear