Umatilla National Forest Rainfall Forecast

Today 15 Oct
No Rain
Thu 16 Oct
No Rain
Fri 17 Oct
5%
Sat 18 Oct
40%
Sun 19 Oct
75%
Mon 20 Oct
20%
Tue 21 Oct
10%

Umatilla National Forest Rainfall Statistics

October Rainfall

Grant County Regional Airport (35.4 miles)

Total Rainfall 2025
14.5in
Daily Average 2025
0.1in
Wettest Day 21 July, 2025
1.1in
Wet Days 2025
72/288 (25%)
Total Rainfall September
1.3in
Daily Average September
0.05in
Wettest Day 10 September, 2025
0.8in
Wet Days September
5/30 (17%)
Total Rainfall October
0.4in
Daily Average October
0.03in
Wettest Day 13 October, 2025
0.2in
Wet Days October
3/15 (20%)

Climate (2010–Present)

Grant County Regional Airport (35.4 miles)

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Annual Average 2020–2024
14.6in
Monthly Average 2020–2025
1.3in
Daily Average 2020–2025
0.04in
Wettest Day 21 July, 2025
1.1in

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