Viewing Station: MD-MG-74 : Rockville 0.6 SE
Apr 9, 2011 - Sep 11, 20254,236 Total Observations
View:

Climatology

Precipitation Normals Comparison

Month-To-Date: 0.15"
September 1-17, 2025(7 of 17 days covered by obs)
NOAA Normal
2.41"
Departure from Normal
-2.26" : 6% of Normal
Year-To-Date: 30.14"
Jan 1 to Sep 17, 2025(195 of 260 days covered by obs)
NOAA Normal
32.00"
Departure from Normal
-1.86" : 94% of Normal
Water Year-To-Date: 35.75"
Oct 1, 2024 to Sep 17, 2025(269 of 352 days covered by obs)
NOAA Normal
42.57"
Departure from Normal
-6.82" : 84% 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