Chapman State Park Rainfall Forecast

Today 17 May
40%
Mon 18 May
10%
Tue 19 May
25%
Wed 20 May
80%
Thu 21 May
5%
Fri 22 May
25%
Sat 23 May
50%

Chapman State Park Rainfall Statistics

May Rainfall

Jamestown, Chautauqua County/Jamestown Airport (27.3 miles)

Total Rainfall 2026
15.2in
Daily Average 2026
0.1in
Wettest Day 11 March, 2026
1.1in
Wet Days 2026
59/137 (43%)
Total Rainfall April
5.2in
Daily Average April
0.2in
Wettest Day 15 April, 2026
0.9in
Wet Days April
22/30 (73%)
Total Rainfall May
3.1in
Daily Average May
0.2in
Wettest Day 5 May, 2026
0.9in
Wet Days May
9/17 (53%)

Climate (2010–Present)

Jamestown, Chautauqua County/Jamestown Airport (27.3 miles)

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Annual Average 2021–2025
30.3in
Monthly Average 2021–2026
2.6in
Daily Average 2021–2026
0.1in
Wettest Day 11 November, 2022
2.4in

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