Port Jefferson Rainfall Forecast

Today 19 Sep
65%
Sun 20 Sep
75%
Mon 21 Sep
55%
Tue 22 Sep
45%
Wed 23 Sep
45%
Thu 24 Sep
15%
Fri 25 Sep
10%

Port Jefferson Rainfall Statistics

September Rainfall

Bellefontaine Regional Airport (14.3 miles)

Total Rainfall 2026
16.7in
Daily Average 2026
0.1in
Wettest Day 19 August, 2026
2.7in
Wet Days 2026
31/262 (12%)
Total Rainfall August
10.8in
Daily Average August
0.3in
Wettest Day 19 August, 2026
2.7in
Wet Days August
18/31 (58%)
Total Rainfall September
3.2in
Daily Average September
0.2in
Wettest Day 5 September, 2026
2.1in
Wet Days September
7/19 (37%)

Climate (2021–2025)

Bellefontaine Regional Airport (14.3 miles)

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Annual Average 2021–2025
25.1in
Monthly Average 2021–2026
2.2in
Daily Average 2021–2026
0.1in
Wettest Day 4 September, 2022
3.1in

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