Viewing Station: MT-LC-4 : Helena 10.6 N
Aug 23, 2007 - Dec 10, 20256,088 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.11"
December 1-10, 2025(9 of 10 days covered by obs)
NOAA Normal
0.12"
Departure from Normal
-0.01" : 92% of Normal
Year-To-Date: 9.74"
Jan 1 to Dec 10, 2025(342 of 344 days covered by obs)
NOAA Normal
10.48"
Departure from Normal
-0.74" : 93% of Normal
Water Year-To-Date: 0.97"
Oct 1, 2025 to Dec 10, 2025(70 of 71 days covered by obs)
NOAA Normal
1.26"
Departure from Normal
-0.29" : 77% 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