Viewing Station: IL-MCH-101 : Crystal Lake 1.9 SW
Mar 23, 2021 - May 27, 20261,839 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.41"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
3.96"
Departure from Normal
-2.55" : 36% of Normal
Year-To-Date: 14.68"
Jan 1 to May 27, 2026(147 of 147 days covered by obs)
NOAA Normal
13.43"
Departure from Normal
1.25" : 109% of Normal
Water Year-To-Date: 21.40"
Oct 1, 2025 to May 27, 2026(239 of 239 days covered by obs)
NOAA Normal
21.00"
Departure from Normal
0.40" : 102% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.75
1.82
-0.07
Feb
1.75
1.82
-0.07
Mar
2.22
2.20
0.02
Apr
3.75
3.68
0.07
May
4.55
4.76
-0.21
Jun
4.66
4.78
-0.12
Jul
3.96
3.94
0.02
Aug
3.82
3.90
-0.08
Sep
3.49
3.52
-0.03
Oct
3.14
3.16
-0.02
Nov
2.41
2.42
-0.01
Dec
2.02
2.04
-0.02
37.52
38.04
-0.52