Viewing Station: IL-SL-1 : Harrisburg 4.6 NNE
Mar 1, 2009 - Sep 21, 20264,676 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.86"
September 1-22, 2026(20 of 22 days covered by obs)
NOAA Normal
2.47"
Departure from Normal
-1.61" : 35% of Normal
Year-To-Date: 28.38"
Jan 1 to Sep 22, 2026(262 of 265 days covered by obs)
NOAA Normal
35.33"
Departure from Normal
-6.95" : 80% of Normal
Water Year-To-Date: 36.28"
Oct 1, 2025 to Sep 22, 2026(354 of 357 days covered by obs)
NOAA Normal
46.52"
Departure from Normal
-10.24" : 78% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.45
3.42
0.03
Feb
3.21
3.22
-0.01
Mar
4.53
4.31
0.22
Apr
5.17
5.13
0.04
May
4.81
4.80
0.01
Jun
4.51
4.66
-0.15
Jul
3.90
3.80
0.10
Aug
3.28
2.97
0.31
Sep
3.37
3.21
0.16
Oct
3.57
3.49
0.08
Nov
4.02
4.14
-0.12
Dec
3.60
3.73
-0.13
47.42
46.88
0.54