Port Jefferson Rainfall Forecast

Today 31 May
95%
Sun 1 Jun
20%
Mon 2 Jun
5%
Tue 3 Jun
5%
Wed 4 Jun
5%
Thu 5 Jun
10%
Fri 6 Jun
40%

Port Jefferson Rainfall Statistics

May Rainfall

Islip, Long Island Mac Arthur Airport (10.6 miles)

Total Rainfall 2025
15.4in
Daily Average 2025
0.1in
Wettest Day 22 May, 2025
1.5in
Wet Days 2025
53/151 (35%)
Total Rainfall April
2in
Daily Average April
0.1in
Wettest Day 26 April, 2025
0.6in
Wet Days April
12/31 (39%)
Total Rainfall May
4.3in
Daily Average May
0.1in
Wettest Day 22 May, 2025
1.5in
Wet Days May
14/31 (45%)

Climate (2010–Present)

Islip, Long Island Mac Arthur Airport (10.6 miles)

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Annual Average 2020–2024
45.6in
Monthly Average 2020–2025
3.7in
Daily Average 2020–2025
0.1in
Wettest Day 16 July, 2023
4.6in

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