Twain Rainfall Forecast

Today 19 Sep
100%
Sun 20 Sep
90%
Mon 21 Sep
70%
Tue 22 Sep
35%
Wed 23 Sep
No Rain
Thu 24 Sep
5%
Fri 25 Sep
5%

Twain Rainfall Statistics

September Rainfall

Iowa City Municipal Airport (1.2 miles)

Total Rainfall 2026
34.2in
Daily Average 2026
0.1in
Wettest Day 2 April, 2026
2in
Wet Days 2026
69/262 (26%)
Total Rainfall August
3.8in
Daily Average August
0.1in
Wettest Day 12 August, 2026
1.3in
Wet Days August
10/31 (32%)
Total Rainfall September
4.1in
Daily Average September
0.2in
Wettest Day 8 September, 2026
1.9in
Wet Days September
4/19 (21%)

Climate (2021–2025)

Iowa City Municipal Airport (1.2 miles)

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Annual Average 2021–2025
28.9in
Monthly Average 2021–2026
2.6in
Daily Average 2021–2026
0.1in
Wettest Day 20 June, 2024
2.6in

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