Viewing Station: MI-WS-81 : Ann Arbor 1.9 W
Apr 1, 2025 - Sep 17, 2025161 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.41"
September 1-17, 2025(17 of 17 days covered by obs)
NOAA Normal
1.65"
Departure from Normal
-1.24" : 25% of Normal
Year-To-Date: 18.99"
Jan 1 to Sep 17, 2025(169 of 260 days covered by obs)
NOAA Normal
24.69"
Departure from Normal
-5.70" : 77% of Normal
Water Year-To-Date: 18.99"
Oct 1, 2024 to Sep 17, 2025(169 of 352 days covered by obs)
NOAA Normal
31.95"
Departure from Normal
-12.96" : 59% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.10
2.66
-0.56
Feb
1.84
2.23
-0.39
Mar
2.25
2.51
-0.26
Apr
3.14
3.23
-0.09
May
3.70
3.69
0.01
Jun
3.54
3.58
-0.04
Jul
3.26
3.28
-0.02
Aug
3.21
3.32
-0.11
Sep
2.92
2.94
-0.02
Oct
2.78
2.87
-0.09
Nov
2.46
2.67
-0.21
Dec
2.02
2.44
-0.42
33.22
35.42
-2.20