Viewing Station: IL-LG-15 : Chestnut 1.9 W
Mar 20, 2008 - Jun 14, 20265,356 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.11"
June 1-15, 2026(14 of 15 days covered by obs)
NOAA Normal
2.14"
Departure from Normal
1.97" : 192% of Normal
Year-To-Date: 16.96"
Jan 1 to Jun 15, 2026(163 of 166 days covered by obs)
NOAA Normal
17.45"
Departure from Normal
-0.49" : 97% of Normal
Water Year-To-Date: 19.06"
Oct 1, 2025 to Jun 15, 2026(236 of 258 days covered by obs)
NOAA Normal
25.97"
Departure from Normal
-6.91" : 73% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.19
2.17
0.02
Feb
1.98
2.04
-0.06
Mar
2.75
2.70
0.05
Apr
3.92
3.93
-0.01
May
4.47
4.36
0.11
Jun
4.28
4.30
-0.02
Jul
4.08
4.21
-0.13
Aug
3.36
3.31
0.05
Sep
3.11
2.98
0.13
Oct
3.28
3.29
-0.01
Nov
2.98
2.86
0.12
Dec
2.26
2.23
0.03
38.66
38.38
0.28