Viewing Station: MD-MG-74 : Rockville 0.6 SE
Apr 15, 2012 - May 29, 20264,456 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.31"
May 1-29, 2026(18 of 29 days covered by obs)
NOAA Normal
4.02"
Departure from Normal
1.29" : 132% of Normal
Year-To-Date: 15.49"
Jan 1 to May 29, 2026(129 of 149 days covered by obs)
NOAA Normal
16.85"
Departure from Normal
-1.36" : 92% of Normal
Water Year-To-Date: 20.20"
Oct 1, 2025 to May 29, 2026(205 of 241 days covered by obs)
NOAA Normal
27.42"
Departure from Normal
-7.22" : 74% 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