Viewing Station: PA-BT-27 : Slippery Rock 5.2 SE
Nov 21, 2018 - Sep 16, 20251,371 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.34"
September 1-18, 2025(14 of 18 days covered by obs)
NOAA Normal
2.35"
Departure from Normal
-2.01" : 14% of Normal
Year-To-Date: 32.65"
Jan 1 to Sep 18, 2025(248 of 261 days covered by obs)
NOAA Normal
31.98"
Departure from Normal
0.67" : 102% of Normal
Water Year-To-Date: 40.12"
Oct 1, 2024 to Sep 18, 2025(304 of 353 days covered by obs)
NOAA Normal
41.68"
Departure from Normal
-1.56" : 96% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.12
3.08
0.04
Feb
2.48
2.55
-0.07
Mar
3.28
3.30
-0.02
Apr
3.77
3.83
-0.06
May
3.89
3.95
-0.06
Jun
4.67
4.49
0.18
Jul
4.53
4.44
0.09
Aug
3.89
3.81
0.08
Sep
3.91
3.83
0.08
Oct
3.28
3.33
-0.05
Nov
3.17
3.26
-0.09
Dec
3.25
3.22
0.03
43.24
43.09
0.15