Grand Tower Rainfall Forecast

Today 25 Apr
15%
Sun 26 Apr
10%
Mon 27 Apr
55%
Tue 28 Apr
90%
Wed 29 Apr
55%
Thu 30 Apr
20%
Fri 1 May
30%

Grand Tower Rainfall Statistics

April Rainfall

Southern Illinois Airport (17.4 miles)

Total Rainfall 2026
7.8in
Daily Average 2026
0.1in
Wettest Day 5 March, 2026
1.1in
Wet Days 2026
21/115 (18%)
Total Rainfall March
4.5in
Daily Average March
0.1in
Wettest Day 5 March, 2026
1.1in
Wet Days March
9/31 (29%)
Total Rainfall April
2.1in
Daily Average April
0.1in
Wettest Day 4 April, 2026
0.9in
Wet Days April
5/25 (20%)

Climate (2010–Present)

Southern Illinois Airport (17.4 miles)

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Annual Average 2021–2025
35.3in
Monthly Average 2021–2026
2.9in
Daily Average 2021–2026
0.1in
Wettest Day 4 September, 2021
3in

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