Viewing Station: PA-BT-27 : Slippery Rock 5.2 SE
Nov 21, 2018 - Aug 21, 20261,536 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.82"
August 1-21, 2026(16 of 21 days covered by obs)
NOAA Normal
2.64"
Departure from Normal
1.18" : 145% of Normal
Year-To-Date: 31.61"
Jan 1 to Aug 21, 2026(175 of 233 days covered by obs)
NOAA Normal
28.38"
Departure from Normal
3.23" : 111% of Normal
Water Year-To-Date: 40.66"
Oct 1, 2025 to Aug 21, 2026(260 of 325 days covered by obs)
NOAA Normal
38.08"
Departure from Normal
2.58" : 107% 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