Viewing Station: MT-LC-4 : Helena 10.6 N
Aug 23, 2007 - Mar 28, 20266,196 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.76"
March 1-28, 2026(28 of 28 days covered by obs)
NOAA Normal
0.42"
Departure from Normal
0.34" : 179% of Normal
Year-To-Date: 1.25"
Jan 1 to Mar 28, 2026(87 of 87 days covered by obs)
NOAA Normal
1.03"
Departure from Normal
0.22" : 121% of Normal
Water Year-To-Date: 2.60"
Oct 1, 2025 to Mar 28, 2026(178 of 179 days covered by obs)
NOAA Normal
2.54"
Departure from Normal
0.06" : 102% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.28
0.42
-0.14
Feb
0.33
0.46
-0.13
Mar
0.47
0.54
-0.07
Apr
1.08
1.11
-0.03
May
1.78
1.96
-0.18
Jun
2.26
2.40
-0.14
Jul
1.04
1.06
-0.02
Aug
1.01
0.98
0.03
Sep
0.97
1.04
-0.07
Oct
0.71
0.87
-0.16
Nov
0.43
0.65
-0.22
Dec
0.37
0.47
-0.10
10.73
11.96
-1.23