Setauket Harbor Rainfall Forecast

Today 1 Sep
No Rain
Tue 2 Sep
No Rain
Wed 3 Sep
No Rain
Thu 4 Sep
10%
Fri 5 Sep
60%
Sat 6 Sep
30%
Sun 7 Sep
15%

Setauket Harbor Rainfall Statistics

September Rainfall

Islip, Long Island Mac Arthur Airport (10.6 miles)

Total Rainfall 2025
23.8in
Daily Average 2025
0.1in
Wettest Day 31 July, 2025
2.9in
Wet Days 2025
82/244 (34%)
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
–
Daily Average September
–
Wettest Day 1 September, 2025
–
Wet Days September
–

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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