Viewing Station: IL-DP-161 : Wheaton 1.2 NNW
Jun 24, 2017 - May 27, 20261,614 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.09"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
4.09"
Departure from Normal
-2.00" : 51% of Normal
Year-To-Date: 13.47"
Jan 1 to May 27, 2026(127 of 147 days covered by obs)
NOAA Normal
13.99"
Departure from Normal
-0.52" : 96% of Normal
Water Year-To-Date: 18.81"
Oct 1, 2025 to May 27, 2026(198 of 239 days covered by obs)
NOAA Normal
22.05"
Departure from Normal
-3.24" : 85% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.89
2.04
-0.15
Feb
1.82
1.93
-0.11
Mar
2.35
2.30
0.05
Apr
3.84
3.82
0.02
May
4.70
4.73
-0.03
Jun
4.44
4.38
0.06
Jul
3.74
3.76
-0.02
Aug
3.89
4.01
-0.12
Sep
3.29
3.28
0.01
Oct
3.43
3.45
-0.02
Nov
2.54
2.60
-0.06
Dec
2.09
2.17
-0.08
38.02
38.47
-0.45