St Charles Rainfall Forecast

Today 18 Aug
No Rain
Wed 19 Aug
75%
Thu 20 Aug
40%
Fri 21 Aug
5%
Sat 22 Aug
15%
Sun 23 Aug
5%
Mon 24 Aug
15%

St Charles Rainfall Statistics

August Rainfall

St. Louis Lambert International Airport (7.5 miles)

Total Rainfall 2026
34.7in
Daily Average 2026
0.2in
Wettest Day 18 May, 2026
2.5in
Wet Days 2026
71/230 (31%)
Total Rainfall July
7.5in
Daily Average July
0.2in
Wettest Day 4 July, 2026
1.7in
Wet Days July
12/31 (39%)
Total Rainfall August
2.2in
Daily Average August
0.1in
Wettest Day 6 August, 2026
1.6in
Wet Days August
6/18 (33%)

Climate (2021–2025)

St. Louis Lambert International Airport (7.5 miles)

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Annual Average 2021–2025
42.5in
Monthly Average 2021–2026
3.6in
Daily Average 2021–2026
0.1in
Wettest Day 26 July, 2022
8.6in

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