Viewing Station: MI-WS-41 : Ann Arbor 7.1 W
May 13, 2016 - Sep 13, 20253,183 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.52"
September 1-13, 2025(13 of 13 days covered by obs)
NOAA Normal
1.24"
Departure from Normal
-0.72" : 42% of Normal
Year-To-Date: 27.16"
Jan 1 to Sep 13, 2025(249 of 256 days covered by obs)
NOAA Normal
24.32"
Departure from Normal
2.84" : 112% of Normal
Water Year-To-Date: 33.79"
Oct 1, 2024 to Sep 13, 2025(341 of 348 days covered by obs)
NOAA Normal
31.62"
Departure from Normal
2.17" : 107% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.11
2.53
-0.42
Feb
1.81
2.10
-0.29
Mar
2.25
2.36
-0.11
Apr
3.14
3.14
0.00
May
3.72
3.76
-0.04
Jun
3.56
3.56
0.00
Jul
3.27
3.25
0.02
Aug
3.22
3.33
-0.11
Sep
2.87
2.91
-0.04
Oct
2.81
2.89
-0.08
Nov
2.48
2.63
-0.15
Dec
2.01
2.26
-0.25
33.25
34.72
-1.47