Umatilla National Forest Rainfall Forecast

Today 12 Jan
No Rain
Tue 13 Jan
No Rain
Wed 14 Jan
No Rain
Thu 15 Jan
No Rain
Fri 16 Jan
No Rain
Sat 17 Jan
No Rain
Sun 18 Jan
No Rain

Umatilla National Forest Rainfall Statistics

January Rainfall

Grant County Regional Airport (35.4 miles)

Total Rainfall 2026
1.3in
Daily Average 2026
0.1in
Wettest Day 1 January, 2026
0.6in
Wet Days 2026
5/12 (42%)
Total Rainfall December
3.8in
Daily Average December
0.1in
Wettest Day 5 December, 2025
1.2in
Wet Days December
13/31 (42%)
Total Rainfall January
1.3in
Daily Average January
0.1in
Wettest Day 1 January, 2026
0.6in
Wet Days January
5/12 (42%)

Climate (2010–Present)

Grant County Regional Airport (35.4 miles)

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Annual Average 2021–2025
16.5in
Monthly Average 2021–2025
1.4in
Daily Average 2021–2026
0.05in
Wettest Day 5 December, 2025
1.2in

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