O'Fallon Rainfall Forecast

Today 20 Oct
No Rain
Tue 21 Oct
15%
Wed 22 Oct
No Rain
Thu 23 Oct
No Rain
Fri 24 Oct
35%
Sat 25 Oct
50%
Sun 26 Oct
45%

O'Fallon Rainfall Statistics

October Rainfall

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

Total Rainfall 2025
29.6in
Daily Average 2025
0.1in
Wettest Day 18 October, 2025
2.7in
Wet Days 2025
73/293 (25%)
Total Rainfall September
0.9in
Daily Average September
0.03in
Wettest Day 23 September, 2025
0.4in
Wet Days September
5/30 (17%)
Total Rainfall October
2.7in
Daily Average October
0.2in
Wettest Day 18 October, 2025
2.7in
Wet Days October
1/20 (5%)

Climate (2010–Present)

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

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Annual Average 2020–2024
35.1in
Monthly Average 2020–2025
2.8in
Daily Average 2020–2025
0.1in
Wettest Day 11 May, 2022
6.4in

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