Big Sioux River Corridor Rainfall Forecast

Today 18 Sep
100%
Sat 19 Sep
35%
Sun 20 Sep
50%
Mon 21 Sep
65%
Tue 22 Sep
10%
Wed 23 Sep
10%
Thu 24 Sep
35%

Big Sioux River Corridor Rainfall Statistics

September Rainfall

Sioux City, Sioux Gateway Airport (19.3 miles)

Total Rainfall 2026
18.6in
Daily Average 2026
0.1in
Wettest Day 2 April, 2026
1.8in
Wet Days 2026
63/261 (24%)
Total Rainfall August
3.9in
Daily Average August
0.1in
Wettest Day 13 August, 2026
1.7in
Wet Days August
9/31 (29%)
Total Rainfall September
1.7in
Daily Average September
0.1in
Wettest Day 2 September, 2026
0.4in
Wet Days September
10/18 (56%)

Climate (2021–2025)

Sioux City, Sioux Gateway Airport (19.3 miles)

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Annual Average 2021–2025
24.8in
Monthly Average 2021–2026
2.1in
Daily Average 2021–2026
0.1in
Wettest Day 28 July, 2024
2.8in

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