Viewing Station: MI-WS-5 : Ann Arbor 3.0 SE
Aug 5, 2008 - May 20, 20264,083 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.27"
May 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.35"
Departure from Normal
-1.08" : 54% of Normal
Year-To-Date: 9.91"
Jan 1 to May 20, 2026(66 of 140 days covered by obs)
NOAA Normal
11.63"
Departure from Normal
-1.72" : 85% of Normal
Water Year-To-Date: 12.50"
Oct 1, 2025 to May 20, 2026(123 of 232 days covered by obs)
NOAA Normal
18.77"
Departure from Normal
-6.27" : 67% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.04
2.66
-0.62
Feb
1.84
2.25
-0.41
Mar
2.24
2.53
-0.29
Apr
3.16
3.22
-0.06
May
3.64
3.66
-0.02
Jun
3.41
3.53
-0.12
Jul
3.22
3.26
-0.04
Aug
3.20
3.30
-0.10
Sep
2.95
2.95
0.00
Oct
2.71
2.85
-0.14
Nov
2.44
2.68
-0.24
Dec
1.99
2.45
-0.46
32.84
35.34
-2.50