Islip

The tables below display average monthly climate and weather indicators in Islip New York.

Temperature by: Fahrenheit / Centigrade

Islip Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Avg. Temperature28.629.838.448.358.367.173.273.066.554.644.034.351.3
Avg. Max Temperature35.937.845.957.167.275.480.880.872.963.452.141.959.3
Avg. Min Temperature21.321.730.839.549.458.765.765.160.045.735.826.543.4
Days with Max Temp of 90 F or Higher0.00.00.00.01.02.03.01.0< 0.50.00.00.07.0
Days with Min Temp Below Freezing25.021.017.03.00.00.00.00.00.01.010.021.098.0
 
Islip Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Heating Degree Days112898682550122124.00.00.051.03296309525647
Cooling Degree Days0.00.00.00.014.087.025424896.07.00.00.0706
 
Islip Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Precipitation (inches)3.73.54.14.23.93.83.54.03.53.64.24.146.1
Days with Precipitation 0.01 inch or More11.09.010.012.011.09.09.08.09.08.010.011.0118
Monthly Snowfall (inches)6.75.94.41.1< 0.050.00.00.00.00.00.93.722.7
 
Other Islip Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Average Wind Speed9.610.110.39.88.88.37.57.37.78.29.39.28.8
Clear Days0.00.00.00.00.00.00.00.00.00.00.00.00.0
Partly Cloudy Days0.00.00.00.00.00.00.00.00.00.00.00.00.0
Cloudy Days0.00.00.00.00.00.00.00.00.00.00.00.00.0
Percent of Possible Sunshine0.00.00.00.00.00.00.00.00.00.00.00.00.0
Avg. Relative Humidity44.068.567.066.065.563.563.566.567.067.063.061.564.5

Weather information for other cities in New York

Portions of this site are based on the CIA World Fact Book, a public-domain work
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