Viewing Station: IL-LW-6 : Sumner 1.0 SW
May 8, 2026 - May 27, 202620 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.43"
May 1-27, 2026(20 of 27 days covered by obs)
NOAA Normal
4.54"
Departure from Normal
-1.11" : 76% of Normal
Year-To-Date: 3.43"
Jan 1 to May 27, 2026(20 of 147 days covered by obs)
NOAA Normal
19.22"
Departure from Normal
-15.79" : 18% of Normal
Water Year-To-Date: 3.43"
Oct 1, 2025 to May 27, 2026(20 of 239 days covered by obs)
NOAA Normal
30.00"
Departure from Normal
-26.57" : 11% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.29
3.31
-0.02
Feb
2.56
2.68
-0.12
Mar
3.85
3.92
-0.07
Apr
4.98
4.92
0.06
May
5.21
5.13
0.08
Jun
4.94
4.82
0.12
Jul
4.34
4.40
-0.06
Aug
3.29
3.16
0.13
Sep
3.45
3.42
0.03
Oct
3.58
3.62
-0.04
Nov
3.99
3.98
0.01
Dec
3.21
3.35
-0.14
46.69
46.71
-0.02