Viewing Station: IL-LS-1 : Ottawa 1.3 NW
Dec 8, 2006 - Jul 26, 20257,018 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 3.61"
July 1-26, 2025(26 of 26 days covered by obs)
NOAA Normal
3.16"
Departure from Normal
0.45" : 114% of Normal
Year-To-Date: 19.52"
Jan 1 to Jul 26, 2025(207 of 207 days covered by obs)
NOAA Normal
21.44"
Departure from Normal
-1.92" : 91% of Normal
Water Year-To-Date: 25.58"
Oct 1, 2024 to Jul 26, 2025(299 of 299 days covered by obs)
NOAA Normal
28.92"
Departure from Normal
-3.34" : 88% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.92
1.90
0.02
Feb
1.75
1.79
-0.04
Mar
2.24
2.38
-0.14
Apr
3.53
3.53
0.00
May
4.47
4.56
-0.09
Jun
4.37
4.43
-0.06
Jul
3.77
3.78
-0.01
Aug
3.64
3.74
-0.10
Sep
3.21
3.29
-0.08
Oct
3.06
3.11
-0.05
Nov
2.46
2.61
-0.15
Dec
1.96
2.06
-0.10
36.38
37.18
-0.80