Viewing Station: OH-PN-17 : Ottawa 2.3 SE
Oct 21, 2021 - Sep 12, 2026275 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.03"
September 1-12, 2026(5 of 12 days covered by obs)
NOAA Normal
1.12"
Departure from Normal
-0.09" : 92% of Normal
Year-To-Date: 16.80"
Jan 1 to Sep 12, 2026(43 of 255 days covered by obs)
NOAA Normal
27.55"
Departure from Normal
-10.75" : 61% of Normal
Water Year-To-Date: 17.99"
Oct 1, 2025 to Sep 12, 2026(46 of 347 days covered by obs)
NOAA Normal
35.55"
Departure from Normal
-17.56" : 51% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
2.40
2.56
-0.16
Feb
2.11
2.15
-0.04
Mar
2.49
2.57
-0.08
Apr
3.58
3.64
-0.06
May
4.16
4.17
-0.01
Jun
4.03
4.09
-0.06
Jul
4.14
4.13
0.01
Aug
3.52
3.47
0.05
Sep
2.81
2.92
-0.11
Oct
2.77
2.73
0.04
Nov
2.79
2.78
0.01
Dec
2.44
2.42
0.02
37.24
37.63
-0.39