Viewing Station: SD-PN-63 : Rapid City 8.4 W
Mar 29, 2017 - May 17, 20263,314 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.25"
May 1-18, 2026(17 of 18 days covered by obs)
NOAA Normal
2.39"
Departure from Normal
-2.14" : 10% of Normal
Year-To-Date: 2.41"
Jan 1 to May 18, 2026(137 of 138 days covered by obs)
NOAA Normal
6.60"
Departure from Normal
-4.19" : 37% of Normal
Water Year-To-Date: 5.05"
Oct 1, 2025 to May 18, 2026(228 of 230 days covered by obs)
NOAA Normal
9.04"
Departure from Normal
-3.99" : 56% 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