Viewing Station: SD-LW-26 : Spearfish 2.8 WNW
Apr 18, 2019 - Sep 15, 20252,053 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.26"
September 1-16, 2025(15 of 16 days covered by obs)
NOAA Normal
0.81"
Departure from Normal
-0.55" : 32% of Normal
Year-To-Date: 21.19"
Jan 1 to Sep 16, 2025(256 of 259 days covered by obs)
NOAA Normal
17.38"
Departure from Normal
3.81" : 122% of Normal
Water Year-To-Date: 24.65"
Oct 1, 2024 to Sep 16, 2025(346 of 351 days covered by obs)
NOAA Normal
21.04"
Departure from Normal
3.61" : 117% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.66
0.62
0.04
Feb
0.88
0.94
-0.06
Mar
1.16
1.25
-0.09
Apr
2.34
2.38
-0.04
May
3.90
3.93
-0.03
Jun
3.52
3.57
-0.05
Jul
2.30
2.38
-0.08
Aug
1.81
1.89
-0.08
Sep
1.52
1.60
-0.08
Oct
2.03
2.21
-0.18
Nov
0.91
0.86
0.05
Dec
0.72
0.79
-0.07
21.75
22.42
-0.67