Heppner Rainfall Forecast

Today 12 Sep
100%
Sun 13 Sep
55%
Mon 14 Sep
No Rain
Tue 15 Sep
5%
Wed 16 Sep
No Rain
Thu 17 Sep
No Rain
Fri 18 Sep
No Rain

Heppner Rainfall Statistics

September Rainfall

Hermiston, Hermiston Municipal Airport (35.4 miles)

Total Rainfall 2026
4.6in
Daily Average 2026
0.02in
Wettest Day 8 February, 2026
0.7in
Wet Days 2026
39/255 (15%)
Total Rainfall August
0.03in
Daily Average August
0in
Wettest Day 15 August, 2026
0.03in
Wet Days August
1/31 (3%)
Total Rainfall September
0.2in
Daily Average September
0.02in
Wettest Day 2 September, 2026
0.1in
Wet Days September
3/12 (25%)

Climate (2021–2025)

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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