Viewing Station: SD-PN-63 : Rapid City 8.4 W
Mar 29, 2017 - Sep 17, 20253,074 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.60"
September 1-18, 2025(17 of 18 days covered by obs)
NOAA Normal
0.91"
Departure from Normal
-0.31" : 66% of Normal
Year-To-Date: 19.17"
Jan 1 to Sep 18, 2025(260 of 261 days covered by obs)
NOAA Normal
17.61"
Departure from Normal
1.56" : 109% of Normal
Water Year-To-Date: 20.83"
Oct 1, 2024 to Sep 18, 2025(352 of 353 days covered by obs)
NOAA Normal
20.05"
Departure from Normal
0.78" : 104% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.34
0.39
-0.05
Feb
0.54
0.54
0.00
Mar
1.07
1.13
-0.06
Apr
2.26
2.34
-0.08
May
4.11
4.11
0.00
Jun
3.34
3.30
0.04
Jul
2.96
2.90
0.06
Aug
2.08
2.18
-0.10
Sep
1.52
1.45
0.07
Oct
1.54
1.64
-0.10
Nov
0.52
0.58
-0.06
Dec
0.38
0.44
-0.06
20.66
21.00
-0.34