St. Charles Airport Rainfall Forecast

Today 11 May
No Rain
Tue 12 May
No Rain
Wed 13 May
65%
Thu 14 May
No Rain
Fri 15 May
35%
Sat 16 May
30%
Sun 17 May
25%

St. Charles Airport Rainfall Statistics

May Rainfall

St. Charles, St. Charles County Smartt Airport (6.2 miles)

Total Rainfall 2026
11.6in
Daily Average 2026
0.1in
Wettest Day 1 April, 2026
1.2in
Wet Days 2026
34/131 (26%)
Total Rainfall April
5.1in
Daily Average April
0.2in
Wettest Day 1 April, 2026
1.2in
Wet Days April
13/30 (43%)
Total Rainfall May
1.4in
Daily Average May
0.2in
Wettest Day 5 May, 2026
0.8in
Wet Days May
5/11 (45%)

Climate (2010–Present)

St. Charles, St. Charles County Smartt Airport (6.2 miles)

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Annual Average 2021–2025
36.2in
Monthly Average 2021–2026
3in
Daily Average 2021–2026
0.1in
Wettest Day 16 July, 2024
3.8in

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