The Weather Network
Weather
Maps
News
Video
|
Welcome
Monthly
⋮
Current
Hourly
7 Days
14 Days
Weekend
Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Central Islip, NY
Content continues below
April
Average Temperature
High
15°
Feels 14
Low
5°
Feels 3
Average Precipitation
9 Days
Rain amount
76.9mm
Snow amount
0.3cm
Content continues below
Daily Historical Averages
April 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
18
19
20
21
22
11°
23
20°
24
16°
25
11°
26
12°
27
14°
28
14°
29
15°
30
14°
Forecast
Wednesday, April 22, 2026
Day
11°
Feels 9
Wind
27 km/h SE
Gust
41 km/h
Humidity
66%
P.O.P
70%
Rain
1-3 mm
Night
5°
Feels 3
Wind
14 km/h NE
Gust
21 km/h
Humidity
100%
P.O.P
40%
Rain
1-3 mm
Historical Averages
Apr 22
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.