Viewing Station: IL-SC-40 : Swansea 0.7 ESE
Jul 1, 2023 - May 27, 20261,062 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 4.33"
May 1-27, 2026(27 of 27 days covered by obs)
NOAA Normal
4.35"
Departure from Normal
-0.02" : 100% of Normal
Year-To-Date: 18.12"
Jan 1 to May 27, 2026(147 of 147 days covered by obs)
NOAA Normal
17.37"
Departure from Normal
0.75" : 104% of Normal
Water Year-To-Date: 25.01"
Oct 1, 2025 to May 27, 2026(239 of 239 days covered by obs)
NOAA Normal
26.59"
Departure from Normal
-1.58" : 94% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.55
2.76
-0.21
Feb
2.21
2.37
-0.16
Mar
3.45
3.50
-0.05
Apr
4.81
4.87
-0.06
May
4.99
5.05
-0.06
Jun
4.36
4.63
-0.27
Jul
3.82
4.24
-0.42
Aug
3.30
3.62
-0.32
Sep
3.32
3.37
-0.05
Oct
3.13
3.13
0.00
Nov
3.41
3.65
-0.24
Dec
2.68
2.72
-0.04
42.03
43.91
-1.88