Hermosa Rainfall Forecast

Today 18 Sep
55%
Fri 19 Sep
10%
Sat 20 Sep
No Rain
Sun 21 Sep
5%
Mon 22 Sep
10%
Tue 23 Sep
5%
Wed 24 Sep
No Rain

Hermosa Rainfall Statistics

September Rainfall

Rapid City, Rapid City Regional Airport (15.5 miles)

Total Rainfall 2025
16.9in
Daily Average 2025
0.1in
Wettest Day 27 April, 2025
1.5in
Wet Days 2025
83/261 (32%)
Total Rainfall August
3in
Daily Average August
0.1in
Wettest Day 1 August, 2025
1.4in
Wet Days August
12/31 (39%)
Total Rainfall September
0.3in
Daily Average September
0.02in
Wettest Day 13 September, 2025
0.3in
Wet Days September
2/18 (11%)

Climate (2010–Present)

Rapid City, Rapid City Regional Airport (15.5 miles)

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Annual Average 2020–2024
15.8in
Monthly Average 2020–2025
1.4in
Daily Average 2020–2025
0.05in
Wettest Day 12 October, 2023
2in

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