Viewing Station: MD-MG-123 : Potomac 2.6 NE
Jun 10, 2018 - Sep 20, 20262,787 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.17"
September 1-20, 2026(20 of 20 days covered by obs)
NOAA Normal
2.81"
Departure from Normal
-1.64" : 42% of Normal
Year-To-Date: 31.51"
Jan 1 to Sep 20, 2026(260 of 263 days covered by obs)
NOAA Normal
32.30"
Departure from Normal
-0.79" : 98% of Normal
Water Year-To-Date: 36.30"
Oct 1, 2025 to Sep 20, 2026(350 of 355 days covered by obs)
NOAA Normal
42.82"
Departure from Normal
-6.52" : 85% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.03
3.04
-0.01
Feb
2.64
2.68
-0.04
Mar
3.73
3.80
-0.07
Apr
3.43
3.39
0.04
May
4.29
4.38
-0.09
Jun
4.26
4.25
0.01
Jul
4.40
4.35
0.05
Aug
3.71
3.79
-0.08
Sep
4.22
4.40
-0.18
Oct
3.76
3.86
-0.10
Nov
3.16
3.20
-0.04
Dec
3.60
3.65
-0.05
44.23
44.79
-0.56