Viewing Station: MT-CC-19 : Great Falls 5.4 SSW
May 12, 2022 - May 18, 2026112 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 1.00"
May 1-18, 2026(6 of 18 days covered by obs)
NOAA Normal
1.41"
Departure from Normal
-0.41" : 71% of Normal
Year-To-Date: 3.36"
Jan 1 to May 18, 2026(43 of 138 days covered by obs)
NOAA Normal
4.65"
Departure from Normal
-1.29" : 72% of Normal
Water Year-To-Date: 5.30"
Oct 1, 2025 to May 18, 2026(53 of 230 days covered by obs)
NOAA Normal
6.75"
Departure from Normal
-1.45" : 79% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.47
0.56
-0.09
Feb
0.53
0.56
-0.03
Mar
0.67
0.65
0.02
Apr
1.57
1.69
-0.12
May
2.43
2.38
0.05
Jun
2.81
2.91
-0.10
Jul
1.23
1.19
0.04
Aug
1.04
1.24
-0.20
Sep
1.41
1.35
0.06
Oct
1.07
1.04
0.03
Nov
0.56
0.66
-0.10
Dec
0.47
0.52
-0.05
14.26
14.75
-0.49