Derby Rainfall Forecast

Today 13 Sep
50%
Mon 14 Sep
25%
Tue 15 Sep
No Rain
Wed 16 Sep
65%
Thu 17 Sep
45%
Fri 18 Sep
45%
Sat 19 Sep
35%

Derby Rainfall Statistics

September Rainfall

Dunkirk, Chautauqua County / Dunkirk Airport (19.9 miles)

Total Rainfall 2026
29.2in
Daily Average 2026
0.1in
Wettest Day 31 March, 2026
1.5in
Wet Days 2026
111/256 (43%)
Total Rainfall August
4in
Daily Average August
0.1in
Wettest Day 23 August, 2026
0.8in
Wet Days August
15/31 (48%)
Total Rainfall September
0.7in
Daily Average September
0.1in
Wettest Day 2 September, 2026
0.5in
Wet Days September
4/13 (31%)

Climate (2021–2025)

Dunkirk, Chautauqua County / Dunkirk Airport (19.9 miles)

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Annual Average 2021–2025
30.1in
Monthly Average 2021–2026
2.7in
Daily Average 2021–2026
0.1in
Wettest Day 22 October, 2025
2in

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