Boise Rainfall Forecast

Today 18 Sep
50%
Fri 19 Sep
10%
Sat 20 Sep
25%
Sun 21 Sep
5%
Mon 22 Sep
5%
Tue 23 Sep
10%
Wed 24 Sep
10%

Boise Rainfall Statistics

September Rainfall

Hereford Municipal Airport (38.5 miles)

Total Rainfall 2025
18.3in
Daily Average 2025
0.1in
Wettest Day 6 May, 2025
2in
Wet Days 2025
50/261 (19%)
Total Rainfall August
2.1in
Daily Average August
0.1in
Wettest Day 11 August, 2025
0.8in
Wet Days August
6/31 (19%)
Total Rainfall September
0.4in
Daily Average September
0.02in
Wettest Day 13 September, 2025
0.3in
Wet Days September
3/18 (17%)

Climate (2010–Present)

Hereford Municipal Airport (38.5 miles)

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Annual Average 2020–2024
11.7in
Monthly Average 2020–2025
1.2in
Daily Average 2020–2025
0.04in
Wettest Day 9 April, 2024
3.9in

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