Heppner Rainfall Forecast

Today 29 May
15%
Sat 30 May
No Rain
Sun 31 May
No Rain
Mon 1 Jun
No Rain
Tue 2 Jun
No Rain
Wed 3 Jun
15%
Thu 4 Jun
5%

Heppner Rainfall Statistics

May Rainfall

Hermiston, Hermiston Municipal Airport (35.4 miles)

Total Rainfall 2026
4.1in
Daily Average 2026
0.03in
Wettest Day 8 February, 2026
0.7in
Wet Days 2026
30/149 (20%)
Total Rainfall April
1.4in
Daily Average April
0.05in
Wettest Day 22 April, 2026
0.6in
Wet Days April
6/30 (20%)
Total Rainfall May
0.1in
Daily Average May
0.01in
Wettest Day 26 May, 2026
0.04in
Wet Days May
4/29 (14%)

Climate (2010–Present)

Hermiston, Hermiston Municipal Airport (35.4 miles)

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Annual Average 2021–2025
9.4in
Monthly Average 2021–2026
0.8in
Daily Average 2021–2026
0.03in
Wettest Day 5 May, 2024
1.1in

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