Viewing Station: MT-FH-17 : Columbia Falls 7.7 S
Nov 5, 2009 - Sep 11, 20266,054 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.45"
September 1-11, 2026(11 of 11 days covered by obs)
NOAA Normal
0.51"
Departure from Normal
2.94" : 672% of Normal
Year-To-Date: 15.47"
Jan 1 to Sep 11, 2026(235 of 254 days covered by obs)
NOAA Normal
13.24"
Departure from Normal
2.23" : 117% of Normal
Water Year-To-Date: 23.93"
Oct 1, 2025 to Sep 11, 2026(327 of 346 days covered by obs)
NOAA Normal
18.69"
Departure from Normal
5.24" : 128% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.73
1.78
-0.05
Feb
1.15
1.35
-0.20
Mar
1.27
1.39
-0.12
Apr
1.53
1.75
-0.22
May
2.01
2.23
-0.22
Jun
3.01
3.43
-0.42
Jul
1.12
1.20
-0.08
Aug
0.91
0.85
0.06
Sep
1.40
1.35
0.05
Oct
1.85
1.63
0.22
Nov
1.86
1.70
0.16
Dec
1.74
1.86
-0.12
19.58
20.52
-0.94