Viewing Station: MD-HW-46 : Marriottsville 2.7 S
Apr 3, 2019 - Sep 11, 20252,159 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.85"
September 1-17, 2025(5 of 17 days covered by obs)
NOAA Normal
2.53"
Departure from Normal
-1.68" : 34% of Normal
Year-To-Date: 27.63"
Jan 1 to Sep 17, 2025(151 of 260 days covered by obs)
NOAA Normal
33.01"
Departure from Normal
-5.38" : 84% of Normal
Water Year-To-Date: 34.25"
Oct 1, 2024 to Sep 17, 2025(233 of 352 days covered by obs)
NOAA Normal
44.32"
Departure from Normal
-10.07" : 77% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.13
3.21
-0.08
Feb
2.74
2.85
-0.11
Mar
3.86
4.06
-0.20
Apr
3.66
3.54
0.12
May
4.27
4.27
0.00
Jun
4.35
4.26
0.09
Jul
4.33
4.14
0.19
Aug
4.14
3.93
0.21
Sep
4.46
4.39
0.07
Oct
4.14
4.17
-0.03
Nov
3.48
3.28
0.20
Dec
3.69
3.90
-0.21
46.25
46.00
0.25