Riverhead Rainfall Forecast

Today 18 Sep
50%
Fri 19 Sep
No Rain
Sat 20 Sep
No Rain
Sun 21 Sep
No Rain
Mon 22 Sep
10%
Tue 23 Sep
10%
Wed 24 Sep
15%

Riverhead Rainfall Statistics

September Rainfall

The Gabreski Airport (5 miles)

Total Rainfall 2025
25.1in
Daily Average 2025
0.1in
Wettest Day 17 March, 2025
1.8in
Wet Days 2025
85/261 (33%)
Total Rainfall August
0.9in
Daily Average August
0.03in
Wettest Day 20 August, 2025
0.5in
Wet Days August
5/31 (16%)
Total Rainfall September
1.4in
Daily Average September
0.1in
Wettest Day 7 September, 2025
0.7in
Wet Days September
4/18 (22%)

Climate (2010–Present)

The Gabreski Airport (5 miles)

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Annual Average 2020–2024
41.4in
Monthly Average 2020–2025
3.5in
Daily Average 2020–2025
0.1in
Wettest Day 15 August, 2023
3.9in

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