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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Islip, NY
Content continues below
July
Average Temperature
High
28°
Feels 30
Low
20°
Feels 20
Average Precipitation
11 Days
Rain amount
80.3mm
Snow amount
0cm
Content continues below
Daily Historical Averages
July 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
28°
18
27°
19
28°
20
26°
21
26°
22
28°
23
27°
24
27°
25
26°
26
26°
27
26°
28
26°
29
26°
30
26°
31
27°
Forecast
Friday, July 17, 2026
Day
28°
Feels 28
Wind
12 km/h N
Gust
33 km/h
Humidity
37%
P.O.P
10%
Night
21°
Feels 21
Wind
12 km/h S
Gust
30 km/h
Humidity
88%
P.O.P
10%
Historical Averages
Jul 17
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.