Viewing Station: IA-OS-6 : Sibley 6.1 NNE
Mar 22, 2025 - Sep 18, 2026111 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.33"
September 1-18, 2026(9 of 18 days covered by obs)
NOAA Normal
1.90"
Departure from Normal
1.43" : 176% of Normal
Year-To-Date: 19.25"
Jan 1 to Sep 18, 2026(52 of 261 days covered by obs)
NOAA Normal
24.31"
Departure from Normal
-5.06" : 79% of Normal
Water Year-To-Date: 20.93"
Oct 1, 2025 to Sep 18, 2026(57 of 353 days covered by obs)
NOAA Normal
29.03"
Departure from Normal
-8.10" : 72% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.74
0.73
0.01
Feb
0.82
0.83
-0.01
Mar
1.57
1.57
0.00
Apr
3.07
3.15
-0.08
May
4.15
4.05
0.10
Jun
4.86
4.80
0.06
Jul
3.68
3.42
0.26
Aug
3.52
3.43
0.09
Sep
3.16
3.24
-0.08
Oct
2.38
2.33
0.05
Nov
1.40
1.38
0.02
Dec
0.94
0.97
-0.03
30.29
29.90
0.39