Viewing Station: MD-MG-74 : Rockville 0.6 SE
Apr 9, 2011 - Dec 14, 20254,316 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.02"
December 1-15, 2025(14 of 15 days covered by obs)
NOAA Normal
1.76"
Departure from Normal
-0.74" : 58% of Normal
Year-To-Date: 36.39"
Jan 1 to Dec 15, 2025(277 of 349 days covered by obs)
NOAA Normal
42.55"
Departure from Normal
-6.16" : 86% of Normal
Water Year-To-Date: 4.47"
Oct 1, 2025 to Dec 15, 2025(60 of 76 days covered by obs)
NOAA Normal
8.70"
Departure from Normal
-4.23" : 51% 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