Viewing Station: IL-LK-13 : Lake Bluff 1.3 W
Mar 21, 2007 - Sep 22, 20265,083 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.22"
September 1-23, 2026(22 of 23 days covered by obs)
NOAA Normal
2.59"
Departure from Normal
1.63" : 163% of Normal
Year-To-Date: 34.78"
Jan 1 to Sep 23, 2026(265 of 266 days covered by obs)
NOAA Normal
28.16"
Departure from Normal
6.62" : 124% of Normal
Water Year-To-Date: 42.48"
Oct 1, 2025 to Sep 23, 2026(357 of 358 days covered by obs)
NOAA Normal
35.82"
Departure from Normal
6.66" : 119% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.86
1.96
-0.10
Feb
1.74
1.90
-0.16
Mar
2.21
2.26
-0.05
Apr
3.76
3.76
0.00
May
4.23
4.37
-0.14
Jun
4.39
4.22
0.17
Jul
3.64
3.64
0.00
Aug
3.74
3.60
0.14
Sep
3.38
3.59
-0.21
Oct
3.22
3.32
-0.10
Nov
2.45
2.44
0.01
Dec
1.99
2.09
-0.10
36.61
37.15
-0.54