Viewing Station: IL-JF-14 : Mount Vernon 1.3 WSW
Apr 16, 2023 - May 27, 20261,128 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.30"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
4.44"
Departure from Normal
-2.14" : 52% of Normal
Year-To-Date: 14.45"
Jan 1 to May 27, 2026(146 of 147 days covered by obs)
NOAA Normal
18.79"
Departure from Normal
-4.34" : 77% of Normal
Water Year-To-Date: 21.14"
Oct 1, 2025 to May 27, 2026(237 of 239 days covered by obs)
NOAA Normal
29.17"
Departure from Normal
-8.03" : 72% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.04
2.88
0.16
Feb
2.57
2.65
-0.08
Mar
3.92
3.77
0.15
Apr
4.82
4.96
-0.14
May
5.10
5.03
0.07
Jun
4.65
4.59
0.06
Jul
4.03
3.93
0.10
Aug
3.46
3.31
0.15
Sep
3.23
3.25
-0.02
Oct
3.41
3.35
0.06
Nov
3.98
3.91
0.07
Dec
2.99
2.93
0.06
45.20
44.56
0.64