Weather History for Islip, NY

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Thursday, October 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 54 °F 53 °F  
Max Temperature 65 °F 62 °F 74 °F (1990)
Min Temperature 42 °F 45 °F 33 °F (1992)
Degree Days  
Heating Degree Days 11 12  
Month to date heating degree days 136 164  
Since 1 July heating degree days 189 241  
Cooling Degree Days 0 0  
Month to date cooling degree days 15 9  
Year to date cooling degree days 993 786  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 47 °F    
Average Humidity 76    
Maximum Humidity 96    
Minimum Humidity 56    
Precipitation  
Precipitation T in 0.13 in 2.05 in (1990)
Month to date precipitation 0.53 2.22  
Year to date precipitation 35.13 36.94  
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 30.01 in    
Wind  
Wind Speed 8 mph (SE)    
Max Wind Speed 16 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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Astronomy

Oct. 18, 2012 Rise Set
Actual Time 7:07 AM EDT 6:06 PM EDT
Civil Twilight 6:39 AM EDT 6:34 PM EDT
Nautical Twilight 6:07 AM EDT 7:06 PM EDT
Astronomical Twilight 5:36 AM EDT 7:38 PM EDT
Moon 10:47 AM EDT (10/18) 8:36 PM EDT (10/18)
Length of Visible Light 11h 54m
Length of Day
10h 59m
Waxing Crescent, 14% of the Moon is Illuminated
Oct 18
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 46.0 °F - 42.1 °F 86% 29.99 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 44.1 °F - 41.0 °F 89% 29.99 in 9.0 mi Calm Calm - N/A   Clear
2:56 AM 43.0 °F - 39.9 °F 89% 29.99 in 8.0 mi Calm Calm - N/A   Clear
3:56 AM 44.1 °F 42.5 °F 41.0 °F 89% 29.99 in 9.0 mi NE 3.5 mph - N/A   Clear
4:56 AM 43.0 °F - 41.0 °F 93% 30.00 in 9.0 mi Calm Calm - N/A   Clear
6:56 AM 43.0 °F - 39.9 °F 89% 30.02 in 9.0 mi Calm Calm - N/A   Partly Cloudy
7:56 AM 46.9 °F - 43.0 °F 86% 30.04 in 8.0 mi Calm Calm - N/A   Partly Cloudy
8:56 AM 54.0 °F - 48.9 °F 83% 30.04 in 10.0 mi Calm Calm - N/A   Scattered Clouds
10:56 AM 62.1 °F - 48.0 °F 60% 30.04 in 10.0 mi South 6.9 mph 16.1 mph N/A   Scattered Clouds
12:56 PM 64.0 °F - 48.0 °F 56% 30.05 in 10.0 mi SSE 12.7 mph 18.4 mph N/A   Mostly Cloudy
1:39 PM 62.6 °F - 48.2 °F 59% 30.04 in 10.0 mi SE 9.2 mph - N/A   Mostly Cloudy
1:56 PM 63.0 °F - 48.0 °F 58% 30.04 in 10.0 mi South 15.0 mph 18.4 mph N/A   Mostly Cloudy
2:56 PM 63.0 °F - 48.0 °F 58% 30.03 in 10.0 mi SSE 12.7 mph - N/A   Mostly Cloudy
3:56 PM 61.0 °F - 48.9 °F 64% 30.02 in 10.0 mi SE 11.5 mph - N/A   Mostly Cloudy
4:56 PM 62.1 °F - 50.0 °F 65% 29.99 in 10.0 mi ESE 15.0 mph - N/A   Mostly Cloudy
6:56 PM 57.9 °F - 52.0 °F 81% 30.00 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
7:56 PM 61.0 °F - 54.0 °F 78% 30.04 in 10.0 mi SE 5.8 mph - N/A   Overcast
8:56 PM 61.0 °F - 55.0 °F 81% 30.01 in 10.0 mi ESE 10.4 mph - N/A   Mostly Cloudy
9:56 PM 62.1 °F - 54.0 °F 75% 29.99 in 10.0 mi East 11.5 mph - N/A   Overcast
10:56 PM 62.1 °F - 53.1 °F 72% 29.98 in 10.0 mi ESE 11.5 mph - 0.00 in   Overcast