Upper Mississippi Conservation Area Rainfall Forecast

Today 14 Sep
25%
Tue 15 Sep
40%
Wed 16 Sep
55%
Thu 17 Sep
35%
Fri 18 Sep
15%
Sat 19 Sep
25%
Sun 20 Sep
30%

Upper Mississippi Conservation Area Rainfall Statistics

September Rainfall

St. Charles, St. Charles County Smartt Airport (22.4 miles)

Total Rainfall 2026
23.8in
Daily Average 2026
0.1in
Wettest Day 18 May, 2026
1.6in
Wet Days 2026
69/257 (27%)
Total Rainfall August
2.2in
Daily Average August
0.1in
Wettest Day 16 August, 2026
1.2in
Wet Days August
10/31 (32%)
Total Rainfall September
0.2in
Daily Average September
0.02in
Wettest Day 10 September, 2026
0.1in
Wet Days September
2/14 (14%)

Climate (2021–2025)

St. Charles, St. Charles County Smartt Airport (22.4 miles)

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Annual Average 2021–2025
36.2in
Monthly Average 2021–2026
2.9in
Daily Average 2021–2026
0.1in
Wettest Day 16 July, 2024
3.8in

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