Grinnell Rainfall Forecast

Today 4 Sep
5%
Fri 5 Sep
30%
Sat 6 Sep
No Rain
Sun 7 Sep
No Rain
Mon 8 Sep
5%
Tue 9 Sep
20%
Wed 10 Sep
15%

Grinnell Rainfall Statistics

September Rainfall

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

Total Rainfall 2025
9.6in
Daily Average 2025
0.04in
Wettest Day 23 June, 2025
1.7in
Wet Days 2025
36/247 (15%)
Total Rainfall August
0.5in
Daily Average August
0.02in
Wettest Day 7 August, 2025
0.5in
Wet Days August
1/31 (3%)
Total Rainfall September
0in
Daily Average September
0in
Wettest Day 1 September, 2025
0in
Wet Days September
–

Climate (2010–Present)

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

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Annual Average 2020–2024
18.9in
Monthly Average 2020–2025
1.5in
Daily Average 2020–2025
0.1in
Wettest Day 1 June, 2023
2.1in

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