Viewing Station: IA-BT-16 : Shellsburg 2.9 S
Aug 27, 2020 - Sep 12, 20251,983 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.10"
September 1-15, 2025(12 of 15 days covered by obs)
NOAA Normal
1.79"
Departure from Normal
-1.69" : 6% of Normal
Year-To-Date: 23.34"
Jan 1 to Sep 15, 2025(255 of 258 days covered by obs)
NOAA Normal
28.47"
Departure from Normal
-5.13" : 82% of Normal
Water Year-To-Date: 32.69"
Oct 1, 2024 to Sep 15, 2025(347 of 350 days covered by obs)
NOAA Normal
34.99"
Departure from Normal
-2.30" : 93% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.03
1.14
-0.11
Feb
1.21
1.31
-0.10
Mar
1.95
2.09
-0.14
Apr
3.80
3.77
0.03
May
4.50
4.65
-0.15
Jun
5.58
5.56
0.02
Jul
4.32
4.38
-0.06
Aug
4.29
4.21
0.08
Sep
3.59
3.68
-0.09
Oct
2.89
2.92
-0.03
Nov
2.09
2.12
-0.03
Dec
1.53
1.60
-0.07
36.78
37.43
-0.65