Monthly Historical AveragesCentral Islip, NY
Average Temperature
High
25°
Feels 26
Low
16°
Feels 16
Average Precipitation
11 Days
91.9mm
0cm
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Daily Historical Averages
S
M
T
W
T
F
S
ForecastSunday, June 21, 2026
Day
27°Feels 27
Wind
16 km/h SW
Gust
24 km/h
Humidity
37%
P.O.P
20%
Night
17°Feels 17
Wind
15 km/h S
Gust
23 km/h
Humidity
83%
P.O.P
30%
Historical AveragesJun 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity