Viewing Station: MT-LC-11 : Helena 9.3 NNE
May 22, 2012 - Jun 8, 2026490 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.15"
June 1-11, 2026(3 of 11 days covered by obs)
NOAA Normal
0.87"
Departure from Normal
-0.72" : 17% of Normal
Year-To-Date: 2.00"
Jan 1 to Jun 11, 2026(17 of 162 days covered by obs)
NOAA Normal
5.28"
Departure from Normal
-3.28" : 38% of Normal
Water Year-To-Date: 2.26"
Oct 1, 2025 to Jun 11, 2026(22 of 254 days covered by obs)
NOAA Normal
7.00"
Departure from Normal
-4.74" : 32% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.31
0.37
-0.06
Feb
0.38
0.39
-0.01
Mar
0.54
0.43
0.11
Apr
1.19
0.91
0.28
May
1.99
1.75
0.24
Jun
2.37
2.27
0.10
Jul
1.07
0.97
0.10
Aug
1.04
0.99
0.05
Sep
1.05
0.90
0.15
Oct
0.86
0.70
0.16
Nov
0.47
0.54
-0.07
Dec
0.39
0.41
-0.02
11.66
10.63
1.03