Johnson Lake Rainfall Forecast

Today 26 May
20%
Wed 27 May
15%
Thu 28 May
65%
Fri 29 May
40%
Sat 30 May
10%
Sun 31 May
5%
Mon 1 Jun
5%

Johnson Lake Rainfall Statistics

May Rainfall

Pullman / Moscow Regional Airport (38.5 miles)

Total Rainfall 2026
12.4in
Daily Average 2026
0.1in
Wettest Day 13 March, 2026
1.8in
Wet Days 2026
45/146 (31%)
Total Rainfall April
2.4in
Daily Average April
0.1in
Wettest Day 15 April, 2026
0.7in
Wet Days April
9/30 (30%)
Total Rainfall May
0.6in
Daily Average May
0.03in
Wettest Day 13 May, 2026
0.3in
Wet Days May
3/26 (12%)

Climate (2010–Present)

Pullman / Moscow Regional Airport (38.5 miles)

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Annual Average 2021–2025
18.5in
Monthly Average 2021–2026
1.6in
Daily Average 2021–2026
0.1in
Wettest Day 13 March, 2026
1.8in

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