Viewing Station: IL-WN-40 : Rockford 4.5 WSW
Dec 2, 2018 - Apr 19, 20262,638 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 8.38"
April 1-19, 2026(19 of 19 days covered by obs)
NOAA Normal
2.37"
Departure from Normal
6.01" : 354% of Normal
Year-To-Date: 12.54"
Jan 1 to Apr 19, 2026(109 of 109 days covered by obs)
NOAA Normal
7.86"
Departure from Normal
4.68" : 160% of Normal
Water Year-To-Date: 17.65"
Oct 1, 2025 to Apr 19, 2026(201 of 201 days covered by obs)
NOAA Normal
14.89"
Departure from Normal
2.76" : 119% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.60
1.60
0.00
Feb
1.64
1.65
-0.01
Mar
2.25
2.17
0.08
Apr
3.74
3.60
0.14
May
4.21
4.27
-0.06
Jun
5.15
5.28
-0.13
Jul
3.85
3.73
0.12
Aug
3.86
4.02
-0.16
Sep
3.61
3.51
0.10
Oct
2.79
2.80
-0.01
Nov
2.31
2.24
0.07
Dec
1.93
1.96
-0.03
36.94
36.83
0.11