Viewing Station: IA-IA-2 : Marengo 2.6 SSW
Mar 10, 2010 - Aug 18, 20264,802 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.73"
August 1-18, 2026(18 of 18 days covered by obs)
NOAA Normal
2.40"
Departure from Normal
3.33" : 238% of Normal
Year-To-Date: 30.49"
Jan 1 to Aug 18, 2026(228 of 230 days covered by obs)
NOAA Normal
24.46"
Departure from Normal
6.03" : 125% of Normal
Water Year-To-Date: 35.19"
Oct 1, 2025 to Aug 18, 2026(319 of 322 days covered by obs)
NOAA Normal
30.91"
Departure from Normal
4.28" : 114% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.06
1.12
-0.06
Feb
1.25
1.34
-0.09
Mar
2.03
2.12
-0.09
Apr
3.69
3.63
0.06
May
4.61
4.75
-0.14
Jun
5.24
5.05
0.19
Jul
4.18
4.20
-0.02
Aug
4.14
4.21
-0.07
Sep
3.50
3.53
-0.03
Oct
2.89
2.80
0.09
Nov
2.08
2.09
-0.01
Dec
1.48
1.59
-0.11
36.15
36.43
-0.28