Viewing Station: SD-PN-78 : Rapid City 2.2 SE
Dec 23, 2021 - Sep 15, 20251,368 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.38"
September 1-15, 2025(15 of 15 days covered by obs)
NOAA Normal
0.68"
Departure from Normal
-0.30" : 56% of Normal
Year-To-Date: 15.06"
Jan 1 to Sep 15, 2025(257 of 258 days covered by obs)
NOAA Normal
15.91"
Departure from Normal
-0.85" : 95% of Normal
Water Year-To-Date: 16.64"
Oct 1, 2024 to Sep 15, 2025(349 of 350 days covered by obs)
NOAA Normal
18.21"
Departure from Normal
-1.57" : 91% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.31
0.32
-0.01
Feb
0.52
0.50
0.02
Mar
0.97
0.96
0.01
Apr
2.09
2.12
-0.03
May
3.86
3.95
-0.09
Jun
3.21
3.24
-0.03
Jul
2.54
2.49
0.05
Aug
1.73
2.15
-0.42
Sep
1.36
1.44
-0.08
Oct
1.43
1.50
-0.07
Nov
0.49
0.49
0.00
Dec
0.38
0.39
-0.01
18.89
19.55
-0.66