Weather History for Islip, NY

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Saturday, May 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 59 °F 59 °F  
Max Temperature 69 °F 68 °F 84 °F (1998)
Min Temperature 49 °F 50 °F 38 °F (2003)
Degree Days  
Heating Degree Days 6 6  
Month to date heating degree days 152 157  
Since 1 July heating degree days 5036 5328  
Cooling Degree Days 0 1  
Month to date cooling degree days 0 2  
Year to date cooling degree days 1 4  
Growing Degree Days 9 (Base 50)    
Moisture  
Dew Point 48 °F    
Average Humidity 67    
Maximum Humidity 89    
Minimum Humidity 45    
Precipitation  
Precipitation 0.06 in 0.12 in 1.60 in (2002)
Month to date precipitation 0.69 2.06  
Year to date precipitation 12.99 17.74  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 46.9 24.8  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.28 in    
Wind  
Wind Speed 7 mph (South)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

May. 18, 2013 Rise Set
Actual Time 5:32 AM EDT 8:06 PM EDT
Civil Twilight 5:00 AM EDT 8:37 PM EDT
Nautical Twilight 4:21 AM EDT 9:16 PM EDT
Astronomical Twilight 3:37 AM EDT 10:01 PM EDT
Moon 1:04 PM EDT (5/18) 1:25 AM EDT (5/18)
Length of Visible Light 15h 36m
Length of Day
14h 33m
First Quarter, 55% of the Moon is Illuminated
May 18
First Quarter
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:56 AM 50.0 °F 43.0 °F 77% 30.19 in 10.0 mi NE 3.5 mph - N/A   Clear
1:56 AM 53.1 °F 43.0 °F 69% 30.20 in 10.0 mi East 3.5 mph - N/A   Clear
2:56 AM 50.0 °F 43.0 °F 77% 30.19 in 10.0 mi Calm Calm - N/A   Clear
3:56 AM 53.1 °F 46.9 °F 80% 30.22 in 10.0 mi SW 5.8 mph - N/A   Clear
4:56 AM 51.1 °F 45.0 °F 80% 30.23 in 10.0 mi Calm Calm - N/A   Clear
5:56 AM 52.0 °F 48.0 °F 86% 30.25 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:56 AM 57.0 °F 48.9 °F 74% 30.27 in 10.0 mi SSW 6.9 mph - N/A   Mostly Cloudy
7:56 AM 57.9 °F 45.0 °F 62% 30.29 in 10.0 mi South 8.1 mph - N/A   Mostly Cloudy
8:56 AM 63.0 °F 46.9 °F 56% 30.31 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
9:56 AM 64.9 °F 48.9 °F 56% 30.31 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
10:56 AM 66.0 °F 48.9 °F 54% 30.31 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
11:56 AM 68.0 °F 46.9 °F 47% 30.30 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
12:56 PM 66.9 °F 46.9 °F 49% 30.30 in 10.0 mi SSW 11.5 mph - N/A   Mostly Cloudy
1:56 PM 64.9 °F 48.9 °F 56% 30.30 in 10.0 mi SSW 10.4 mph 17.3 mph N/A   Overcast
2:56 PM 63.0 °F 48.9 °F 60% 30.30 in 10.0 mi South 9.2 mph - N/A   Overcast
3:56 PM 60.1 °F 51.1 °F 72% 30.30 in 10.0 mi South 6.9 mph - 0.00 in Rain Light Rain
4:56 PM 59.0 °F 53.1 °F 81% 30.30 in 10.0 mi SSW 6.9 mph - 0.00 in Rain Light Rain
5:56 PM 57.9 °F 53.1 °F 84% 30.31 in 10.0 mi South 6.9 mph - 0.04 in Rain Light Rain
6:56 PM 57.9 °F 51.1 °F 78% 30.30 in 10.0 mi SSE 5.8 mph - 0.02 in Rain Light Rain
7:56 PM 57.9 °F 51.1 °F 78% 30.31 in 10.0 mi SE 6.9 mph - 0.00 in   Overcast
8:56 PM 57.9 °F 52.0 °F 81% 30.30 in 10.0 mi SSE 5.8 mph - N/A   Overcast
9:56 PM 57.9 °F 48.9 °F 72% 30.31 in 10.0 mi SSE 6.9 mph - N/A   Overcast
10:56 PM 57.9 °F 48.0 °F 70% 30.30 in 10.0 mi South 8.1 mph - N/A   Overcast
11:56 PM 57.9 °F 48.9 °F 72% 30.30 in 10.0 mi SSE 4.6 mph - N/A   Overcast