O'Fallon Rainfall Forecast

Today 29 Jun
No Rain
Tue 30 Jun
No Rain
Wed 1 Jul
No Rain
Thu 2 Jul
20%
Fri 3 Jul
25%
Sat 4 Jul
20%
Sun 5 Jul
40%

O'Fallon Rainfall Statistics

June Rainfall

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

Total Rainfall 2026
17.7in
Daily Average 2026
0.1in
Wettest Day 18 May, 2026
2.5in
Wet Days 2026
50/180 (28%)
Total Rainfall May
4.3in
Daily Average May
0.1in
Wettest Day 18 May, 2026
2.5in
Wet Days May
12/31 (39%)
Total Rainfall June
4.1in
Daily Average June
0.2in
Wettest Day 1 June, 2026
2.2in
Wet Days June
9/29 (31%)

Climate (2021–2025)

Belleville, Scott AFB/MidAmerica Airport (4.3 miles)

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Annual Average 2021–2025
33.5in
Monthly Average 2021–2026
2.8in
Daily Average 2021–2026
0.1in
Wettest Day 11 May, 2022
6.4in

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