Viewing Station: IA-CG-13 : Mason City 4.2 N
Apr 17, 2023 - Sep 22, 2026619 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.91"
September 1-23, 2026(17 of 23 days covered by obs)
NOAA Normal
2.57"
Departure from Normal
1.34" : 152% of Normal
Year-To-Date: 22.46"
Jan 1 to Sep 23, 2026(86 of 266 days covered by obs)
NOAA Normal
29.17"
Departure from Normal
-6.71" : 77% of Normal
Water Year-To-Date: 25.26"
Oct 1, 2025 to Sep 23, 2026(123 of 358 days covered by obs)
NOAA Normal
34.60"
Departure from Normal
-9.34" : 73% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
0.88
0.93
-0.05
Feb
1.05
1.09
-0.04
Mar
1.95
1.99
-0.04
Apr
3.90
3.88
0.02
May
5.03
5.33
-0.30
Jun
5.39
5.47
-0.08
Jul
4.57
4.58
-0.01
Aug
3.83
3.82
0.01
Sep
3.35
3.34
0.01
Oct
2.50
2.58
-0.08
Nov
1.66
1.74
-0.08
Dec
1.27
1.28
-0.01
35.38
36.03
-0.65