Viewing Station: MD-MG-74 : Rockville 0.6 SE
Apr 15, 2012 - Aug 11, 20264,524 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 3.95"
August 1-11, 2026(9 of 11 days covered by obs)
NOAA Normal
1.33"
Departure from Normal
2.62" : 297% of Normal
Year-To-Date: 26.71"
Jan 1 to Aug 11, 2026(198 of 223 days covered by obs)
NOAA Normal
27.17"
Departure from Normal
-0.46" : 98% of Normal
Water Year-To-Date: 31.42"
Oct 1, 2025 to Aug 11, 2026(274 of 315 days covered by obs)
NOAA Normal
37.74"
Departure from Normal
-6.32" : 83% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.01
3.04
-0.03
Feb
2.64
2.68
-0.04
Mar
3.74
3.81
-0.07
Apr
3.44
3.39
0.05
May
4.30
4.37
-0.07
Jun
4.28
4.24
0.04
Jul
4.43
4.33
0.10
Aug
3.75
3.78
-0.03
Sep
4.26
4.38
-0.12
Oct
3.79
3.87
-0.08
Nov
3.15
3.21
-0.06
Dec
3.63
3.66
-0.03
44.42
44.76
-0.34