Umatilla National Forest Rainfall Forecast
- 20%
- 85%
- 70%
- 70%
- 55%
- 15%
- 10%
Umatilla National Forest Rainfall Statistics
December Rainfall
Grant County Regional Airport (35.4 miles)
Total Rainfall December
2.9inDaily Average December
0.1inWettest Day 5 December, 2025
1.2inWet Days December
8/22 (36%)
Climate (2010–Present)
Grant County Regional Airport (35.4 miles)
Annual Average 2020–2024
14.6inMonthly Average 2020–2025
1.3inDaily Average 2020–2025
0.05inWettest Day 5 December, 2025
1.2in