Viewing Station: SD-LW-24 : Spearfish 6.7 NNW
Feb 5, 2018 - Sep 15, 20252,724 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.32"
September 1-16, 2025(15 of 16 days covered by obs)
NOAA Normal
0.77"
Departure from Normal
-0.45" : 42% of Normal
Year-To-Date: 19.25"
Jan 1 to Sep 16, 2025(252 of 259 days covered by obs)
NOAA Normal
16.62"
Departure from Normal
2.63" : 116% of Normal
Water Year-To-Date: 21.62"
Oct 1, 2024 to Sep 16, 2025(341 of 351 days covered by obs)
NOAA Normal
20.01"
Departure from Normal
1.61" : 108% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.60
0.54
0.06
Feb
0.80
0.75
0.05
Mar
1.05
1.11
-0.06
Apr
2.23
2.19
0.04
May
3.77
3.51
0.26
Jun
3.40
3.28
0.12
Jul
2.26
2.17
0.09
Aug
1.74
1.73
0.01
Sep
1.44
1.44
0.00
Oct
1.90
1.85
0.05
Nov
0.83
0.71
0.12
Dec
0.66
0.66
0.00
20.68
19.94
0.74