Viewing Station: MT-LC-14 : Helena 2.0 NNW
Jun 15, 2013 - Dec 14, 20254,885 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.63"
December 1-14, 2025(14 of 14 days covered by obs)
NOAA Normal
0.22"
Departure from Normal
0.41" : 285% of Normal
Year-To-Date: 13.83"
Jan 1 to Dec 14, 2025(345 of 348 days covered by obs)
NOAA Normal
12.73"
Departure from Normal
1.10" : 109% of Normal
Water Year-To-Date: 2.60"
Oct 1, 2025 to Dec 14, 2025(74 of 75 days covered by obs)
NOAA Normal
1.90"
Departure from Normal
0.70" : 137% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.39
0.45
-0.06
Feb
0.46
0.47
-0.01
Mar
0.73
0.56
0.17
Apr
1.36
1.05
0.31
May
2.10
1.89
0.21
Jun
2.39
2.25
0.14
Jul
1.17
1.10
0.07
Aug
1.08
1.10
-0.02
Sep
1.15
1.00
0.15
Oct
0.99
0.89
0.10
Nov
0.69
0.58
0.11
Dec
0.49
0.49
0.00
13.00
11.83
1.17