Viewing Station: PA-LH-24 : Allentown 2.6 WNW
Apr 1, 2019 - Sep 20, 20261,794 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.62"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
3.04"
Departure from Normal
-0.42" : 86% of Normal
Year-To-Date: 19.19"
Jan 1 to Sep 20, 2026(174 of 263 days covered by obs)
NOAA Normal
34.05"
Departure from Normal
-14.86" : 56% of Normal
Water Year-To-Date: 25.30"
Oct 1, 2025 to Sep 20, 2026(255 of 355 days covered by obs)
NOAA Normal
45.51"
Departure from Normal
-20.21" : 56% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.39
3.56
-0.17
Feb
2.68
2.90
-0.22
Mar
3.75
3.86
-0.11
Apr
3.74
3.82
-0.08
May
3.74
3.89
-0.15
Jun
4.33
4.59
-0.26
Jul
4.81
5.10
-0.29
Aug
4.57
4.70
-0.13
Sep
4.56
4.77
-0.21
Oct
4.24
4.44
-0.20
Nov
3.36
3.35
0.01
Dec
3.86
4.17
-0.31
47.03
49.15
-2.12