Viewing Station: OR-UM-14 : Umatilla 0.7 WSW
Nov 14, 2009 - Sep 18, 20262,672 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.54"
September 1-18, 2026(18 of 18 days covered by obs)
NOAA Normal
0.18"
Departure from Normal
0.36" : 300% of Normal
Year-To-Date: 6.00"
Jan 1 to Sep 18, 2026(256 of 261 days covered by obs)
NOAA Normal
5.60"
Departure from Normal
0.40" : 107% of Normal
Water Year-To-Date: 11.06"
Oct 1, 2025 to Sep 18, 2026(347 of 353 days covered by obs)
NOAA Normal
8.68"
Departure from Normal
2.38" : 127% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.16
1.09
0.07
Feb
0.84
0.79
0.05
Mar
0.83
0.81
0.02
Apr
0.71
0.68
0.03
May
0.88
0.83
0.05
Jun
0.61
0.57
0.04
Jul
0.17
0.16
0.01
Aug
0.22
0.19
0.03
Sep
0.30
0.29
0.01
Oct
0.78
0.74
0.04
Nov
1.03
0.98
0.05
Dec
1.27
1.22
0.05
8.80
8.35
0.45