Viewing Station: MT-MS-12 : Missoula 4.9 N
Mar 26, 2007 - May 18, 20266,690 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.26"
May 1-18, 2026(17 of 18 days covered by obs)
NOAA Normal
1.26"
Departure from Normal
-1.00" : 21% of Normal
Year-To-Date: 7.11"
Jan 1 to May 18, 2026(137 of 138 days covered by obs)
NOAA Normal
7.51"
Departure from Normal
-0.40" : 95% of Normal
Water Year-To-Date: 14.46"
Oct 1, 2025 to May 18, 2026(229 of 230 days covered by obs)
NOAA Normal
12.57"
Departure from Normal
1.89" : 115% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.64
1.38
0.26
Feb
1.42
1.29
0.13
Mar
1.35
1.34
0.01
Apr
1.84
1.62
0.22
May
2.17
2.20
-0.03
Jun
2.45
2.74
-0.29
Jul
0.93
0.90
0.03
Aug
0.94
1.00
-0.06
Sep
1.23
1.04
0.19
Oct
1.64
1.49
0.15
Nov
1.77
1.55
0.22
Dec
1.65
1.49
0.16
19.03
18.04
0.99