Viewing Station: IA-LY-11 : Rock Rapids 5.6 W
Sep 10, 2019 - Sep 15, 2025400 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.65"
September 1-15, 2025(4 of 15 days covered by obs)
NOAA Normal
1.60"
Departure from Normal
0.05" : 103% of Normal
Year-To-Date: 16.70"
Jan 1 to Sep 15, 2025(27 of 258 days covered by obs)
NOAA Normal
22.58"
Departure from Normal
-5.88" : 74% of Normal
Water Year-To-Date: 19.45"
Oct 1, 2024 to Sep 15, 2025(30 of 350 days covered by obs)
NOAA Normal
27.06"
Departure from Normal
-7.61" : 72% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.66
0.62
0.04
Feb
0.80
0.75
0.05
Mar
1.46
1.50
-0.04
Apr
2.91
2.98
-0.07
May
3.97
3.86
0.11
Jun
4.73
4.76
-0.03
Jul
3.39
3.44
-0.05
Aug
3.06
3.23
-0.17
Sep
3.20
3.12
0.08
Oct
2.29
2.29
0.00
Nov
1.32
1.40
-0.08
Dec
0.87
0.88
-0.01
28.66
28.83
-0.17