Viewing Station: PA-MT-155 : Willow Grove 1.1 SSE
Jan 28, 2024 - Sep 20, 2026949 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.84"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.95"
Departure from Normal
-1.11" : 62% of Normal
Year-To-Date: 31.65"
Jan 1 to Sep 20, 2026(261 of 263 days covered by obs)
NOAA Normal
34.53"
Departure from Normal
-2.88" : 92% of Normal
Water Year-To-Date: 39.83"
Oct 1, 2025 to Sep 20, 2026(352 of 355 days covered by obs)
NOAA Normal
46.19"
Departure from Normal
-6.36" : 86% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.46
3.59
-0.13
Feb
2.79
2.85
-0.06
Mar
4.09
4.26
-0.17
Apr
3.76
3.73
0.03
May
3.93
3.99
-0.06
Jun
4.27
4.30
-0.03
Jul
4.79
4.81
-0.02
Aug
4.49
4.82
-0.33
Sep
4.43
4.45
-0.02
Oct
4.05
4.08
-0.03
Nov
3.32
3.31
0.01
Dec
4.29
4.41
-0.12
47.67
48.60
-0.93