Long Island Rainfall Forecast

Today 20 May
20%
Thu 21 May
20%
Fri 22 May
No Rain
Sat 23 May
5%
Sun 24 May
50%
Mon 25 May
65%
Tue 26 May
40%

Long Island Rainfall Statistics

May Rainfall

Portland, Portland International Jetport (7.5 miles)

Total Rainfall 2026
15.2in
Daily Average 2026
0.1in
Wettest Day 14 May, 2026
2in
Wet Days 2026
61/140 (44%)
Total Rainfall April
3.1in
Daily Average April
0.1in
Wettest Day 30 April, 2026
0.9in
Wet Days April
15/30 (50%)
Total Rainfall May
4.1in
Daily Average May
0.2in
Wettest Day 14 May, 2026
2in
Wet Days May
8/20 (40%)

Climate (2010–Present)

Portland, Portland International Jetport (7.5 miles)

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Annual Average 2021–2025
46.1in
Monthly Average 2021–2026
3.8in
Daily Average 2021–2026
0.1in
Wettest Day 14 October, 2022
2.8in

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