Bismarck Rainfall Forecast

Today 18 Sep
80%
Fri 19 Sep
60%
Sat 20 Sep
5%
Sun 21 Sep
5%
Mon 22 Sep
20%
Tue 23 Sep
10%
Wed 24 Sep
No Rain

Bismarck Rainfall Statistics

September Rainfall

Bismarck, Bismarck Municipal Airport (1.9 miles)

Total Rainfall 2025
19.1in
Daily Average 2025
0.1in
Wettest Day 20 July, 2025
2.6in
Wet Days 2025
67/261 (26%)
Total Rainfall August
1.7in
Daily Average August
0.1in
Wettest Day 8 August, 2025
0.8in
Wet Days August
5/31 (16%)
Total Rainfall September
3.1in
Daily Average September
0.2in
Wettest Day 14 September, 2025
2.4in
Wet Days September
8/18 (44%)

Climate (2010–Present)

Bismarck, Bismarck Municipal Airport (1.9 miles)

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Annual Average 2020–2024
15.3in
Monthly Average 2020–2025
1.4in
Daily Average 2020–2025
0.05in
Wettest Day 20 July, 2025
2.6in

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