Setauket Harbor Rainfall Forecast

Today 15 Sep
No Rain
Tue 16 Sep
15%
Wed 17 Sep
60%
Thu 18 Sep
40%
Fri 19 Sep
10%
Sat 20 Sep
5%
Sun 21 Sep
No Rain

Setauket Harbor Rainfall Statistics

September Rainfall

Islip, Long Island Mac Arthur Airport (10.6 miles)

Total Rainfall 2025
24.9in
Daily Average 2025
0.1in
Wettest Day 31 July, 2025
2.9in
Wet Days 2025
86/258 (33%)
Total Rainfall August
0.5in
Daily Average August
0.02in
Wettest Day 20 August, 2025
0.3in
Wet Days August
5/31 (16%)
Total Rainfall September
1.1in
Daily Average September
0.1in
Wettest Day 7 September, 2025
0.4in
Wet Days September
4/15 (27%)

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
3.8in
Daily Average 2020–2025
0.1in
Wettest Day 16 July, 2023
4.6in

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