Rapid Valley Rainfall Forecast

Today 6 Sep
20%
Mon 7 Sep
20%
Tue 8 Sep
No Rain
Wed 9 Sep
No Rain
Thu 10 Sep
No Rain
Fri 11 Sep
No Rain
Sat 12 Sep
25%

Rapid Valley Rainfall Statistics

September Rainfall

Rapid City, Rapid City Regional Airport (4.3 miles)

Total Rainfall 2026
9.7in
Daily Average 2026
0.04in
Wettest Day 21 May, 2026
1.8in
Wet Days 2026
55/249 (22%)
Total Rainfall August
2.2in
Daily Average August
0.1in
Wettest Day 16 August, 2026
1.1in
Wet Days August
10/31 (32%)
Total Rainfall September
0.1in
Daily Average September
0.01in
Wettest Day 4 September, 2026
0.03in
Wet Days September
2/6 (33%)

Climate (2021–2025)

Rapid City, Rapid City Regional Airport (4.3 miles)

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Annual Average 2021–2025
17.1in
Monthly Average 2021–2026
1.4in
Daily Average 2021–2026
0.05in
Wettest Day 12 October, 2023
2in

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