Islip Rainfall Forecast

Today 16 Apr
25%
Fri 17 Apr
35%
Sat 18 Apr
5%
Sun 19 Apr
75%
Mon 20 Apr
35%
Tue 21 Apr
No Rain
Wed 22 Apr
15%

Islip Rainfall Statistics

April Rainfall

Islip, Long Island Mac Arthur Airport (6.8 miles)

Total Rainfall 2026
10.3in
Daily Average 2026
0.1in
Wettest Day 23 February, 2026
2in
Wet Days 2026
39/106 (37%)
Total Rainfall March
4.2in
Daily Average March
0.1in
Wettest Day 5 March, 2026
1.3in
Wet Days March
15/31 (48%)
Total Rainfall April
0.4in
Daily Average April
0.03in
Wettest Day 2 April, 2026
0.1in
Wet Days April
3/16 (19%)

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (6.8 miles)

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Annual Average 2021–2025
44.1in
Monthly Average 2021–2026
3.7in
Daily Average 2021–2026
0.1in
Wettest Day 16 July, 2023
4.6in

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