Viewing Station: IL-BU-15 : Princeton 1.0 SSW
May 15, 2026 - May 27, 202611 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.37"
May 1-27, 2026(11 of 27 days covered by obs)
NOAA Normal
4.14"
Departure from Normal
-2.77" : 33% of Normal
Year-To-Date: 1.37"
Jan 1 to May 27, 2026(11 of 147 days covered by obs)
NOAA Normal
13.96"
Departure from Normal
-12.59" : 10% of Normal
Water Year-To-Date: 1.37"
Oct 1, 2025 to May 27, 2026(11 of 239 days covered by obs)
NOAA Normal
21.68"
Departure from Normal
-20.31" : 6% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.84
1.81
0.03
Feb
1.75
1.83
-0.08
Mar
2.48
2.33
0.15
Apr
3.75
3.75
0.00
May
4.75
4.77
-0.02
Jun
4.59
4.74
-0.15
Jul
3.74
3.74
0.00
Aug
3.63
3.71
-0.08
Sep
3.63
3.54
0.09
Oct
3.12
3.07
0.05
Nov
2.56
2.54
0.02
Dec
2.04
2.09
-0.05
37.88
37.92
-0.04