Viewing Station: SD-LW-15 : Spearfish 0.1 WSW
May 11, 2011 - Sep 13, 20265,374 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.03"
September 1-13, 2026(10 of 13 days covered by obs)
NOAA Normal
0.71"
Departure from Normal
-0.68" : 4% of Normal
Year-To-Date: 10.72"
Jan 1 to Sep 13, 2026(231 of 256 days covered by obs)
NOAA Normal
18.81"
Departure from Normal
-8.09" : 57% of Normal
Water Year-To-Date: 16.70"
Oct 1, 2025 to Sep 13, 2026(320 of 348 days covered by obs)
NOAA Normal
23.01"
Departure from Normal
-6.31" : 73% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.83
0.70
0.13
Feb
1.07
1.00
0.07
Mar
1.41
1.34
0.07
Apr
2.61
2.51
0.10
May
4.19
4.01
0.18
Jun
3.67
3.61
0.06
Jul
2.40
2.46
-0.06
Aug
1.92
1.92
0.00
Sep
1.64
1.62
0.02
Oct
2.27
2.28
-0.01
Nov
1.05
0.93
0.12
Dec
0.88
0.93
-0.05
23.94
23.31
0.63