Viewing Station: IA-AL-7 : Harpers Ferry 6.4 SSW
May 29, 2020 - Sep 18, 20262,180 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 2.36"
September 1-18, 2026(16 of 18 days covered by obs)
NOAA Normal
2.41"
Departure from Normal
-0.05" : 98% of Normal
Year-To-Date: 32.15"
Jan 1 to Sep 18, 2026(251 of 261 days covered by obs)
NOAA Normal
29.53"
Departure from Normal
2.62" : 109% of Normal
Water Year-To-Date: 35.20"
Oct 1, 2025 to Sep 18, 2026(339 of 353 days covered by obs)
NOAA Normal
35.71"
Departure from Normal
-0.51" : 99% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
1.20
1.21
-0.01
Feb
1.17
1.20
-0.03
Mar
2.00
1.97
0.03
Apr
3.85
3.89
-0.04
May
4.63
4.68
-0.05
Jun
5.75
5.67
0.08
Jul
4.44
4.32
0.12
Aug
4.08
4.05
0.03
Sep
4.02
3.82
0.20
Oct
2.67
2.70
-0.03
Nov
2.06
2.03
0.03
Dec
1.45
1.52
-0.07
37.32
37.06
0.26