Grinnell Rainfall Forecast

Today 9 Aug
40%
Mon 10 Aug
25%
Tue 11 Aug
35%
Wed 12 Aug
50%
Thu 13 Aug
60%
Fri 14 Aug
50%
Sat 15 Aug
55%

Grinnell Rainfall Statistics

August Rainfall

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

Total Rainfall 2026
14.7in
Daily Average 2026
0.1in
Wettest Day 2 July, 2026
1.8in
Wet Days 2026
40/221 (18%)
Total Rainfall July
5.6in
Daily Average July
0.2in
Wettest Day 2 July, 2026
1.8in
Wet Days July
9/31 (29%)
Total Rainfall August
0in
Daily Average August
0in
Wettest Day 1 August, 2026
0in
Wet Days August
–

Climate (2021–2025)

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

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Annual Average 2021–2025
16.6in
Monthly Average 2021–2026
1.4in
Daily Average 2021–2026
0.05in
Wettest Day 1 June, 2023
2.1in

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