Weather History for Islip, NY

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Monday, September 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 62 °F 65 °F  
Max Temperature 75 °F 74 °F 87 °F (1991)
Min Temperature 49 °F 57 °F 45 °F (1986)
Degree Days  
Heating Degree Days 3 2  
Month to date heating degree days 11 20  
Since 1 July heating degree days 11 25  
Cooling Degree Days 0 3  
Month to date cooling degree days 87 72  
Year to date cooling degree days 965 758  
Growing Degree Days 12 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 67    
Maximum Humidity 93    
Minimum Humidity 40    
Precipitation  
Precipitation 0.00 in 0.12 in 2.85 in (1996)
Month to date precipitation 2.54 1.98  
Year to date precipitation 33.58 33.12  
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 30.06 in    
Wind  
Wind Speed 4 mph (SSW)    
Max Wind Speed 14 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 17, 2012 Rise Set
Actual Time 6:35 AM EDT 6:57 PM EDT
Civil Twilight 6:07 AM EDT 7:24 PM EDT
Nautical Twilight 5:35 AM EDT 7:56 PM EDT
Astronomical Twilight 5:02 AM EDT 8:29 PM EDT
Moon 8:22 AM EDT (9/17) 7:36 PM EDT (9/17)
Length of Visible Light 13h 16m
Length of Day
12h 21m
Waxing Crescent, 3% of the Moon is Illuminated
Sep 17
Waxing Crescent
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter
Oct 15
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 55.0 °F 51.1 °F 86% 30.05 in 10.0 mi Calm Calm - N/A   Clear
1:56 AM 54.0 °F 50.0 °F 86% 30.06 in 10.0 mi Calm Calm - N/A   Clear
2:56 AM 54.0 °F 48.9 °F 83% 30.05 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 54.0 °F 48.9 °F 83% 30.06 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:56 AM 51.1 °F 48.0 °F 89% 30.07 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 50.0 °F 48.0 °F 93% 30.08 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:56 AM 51.1 °F 48.0 °F 89% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:56 AM 57.9 °F 53.1 °F 84% 30.09 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:56 AM 66.9 °F 51.1 °F 57% 30.10 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:56 AM 70.0 °F 45.0 °F 41% 30.10 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:56 AM 72.0 °F 48.9 °F 44% 30.10 in 10.0 mi Variable 5.8 mph - N/A   Partly Cloudy
11:56 AM 72.0 °F 48.9 °F 44% 30.09 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
12:56 PM 73.9 °F 52.0 °F 46% 30.07 in 10.0 mi Variable 5.8 mph - N/A   Scattered Clouds
1:56 PM 75.0 °F 53.1 °F 46% 30.06 in 10.0 mi SSW 10.4 mph - N/A   Scattered Clouds
2:56 PM 75.0 °F 51.1 °F 43% 30.05 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
3:56 PM 73.9 °F 50.0 °F 43% 30.03 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
4:56 PM 73.0 °F 50.0 °F 44% 30.04 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
5:56 PM 71.1 °F 53.1 °F 53% 30.04 in 10.0 mi SW 5.8 mph - N/A   Mostly Cloudy
6:56 PM 68.0 °F 53.1 °F 59% 30.04 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
7:56 PM 68.0 °F 53.1 °F 59% 30.05 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
8:56 PM 66.9 °F 52.0 °F 59% 30.05 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
9:56 PM 66.0 °F 52.0 °F 60% 30.05 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
10:56 PM 61.0 °F 53.1 °F 75% 30.05 in 10.0 mi Calm Calm - N/A   Mostly Cloudy