Viewing Station: SD-GY-21 : Bonesteel 0.1 S
May 8, 2012 - Sep 16, 20254,471 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.44"
September 1-16, 2025(16 of 16 days covered by obs)
NOAA Normal
1.37"
Departure from Normal
-0.93" : 32% of Normal
Year-To-Date: 11.86"
Jan 1 to Sep 16, 2025(224 of 259 days covered by obs)
NOAA Normal
20.67"
Departure from Normal
-8.81" : 57% of Normal
Water Year-To-Date: 14.16"
Oct 1, 2024 to Sep 16, 2025(311 of 351 days covered by obs)
NOAA Normal
24.19"
Departure from Normal
-10.03" : 59% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.51
0.42
0.09
Feb
0.72
0.75
-0.03
Mar
1.25
1.30
-0.05
Apr
2.99
3.08
-0.09
May
3.90
4.09
-0.19
Jun
3.76
4.11
-0.35
Jul
3.09
3.05
0.04
Aug
3.08
3.30
-0.22
Sep
2.57
2.79
-0.22
Oct
2.06
2.07
-0.01
Nov
0.83
0.86
-0.03
Dec
0.63
0.63
0.00
25.39
26.45
-1.06