Viewing Station: MD-MG-74 : Rockville 0.6 SE
Apr 9, 2011 - May 30, 20254,162 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 7.52"
May 1-30, 2025(29 of 30 days covered by obs)
0%20%40%Below Normal80%Near Normal120%Above Normal160%180%>= 200%
NOAA Normal
4.16"
Departure from Normal
3.36" : 181% of Normal
Year-To-Date: 15.25"
Jan 1 to May 30, 2025(119 of 150 days covered by obs)
0%20%40%Below Normal80%Near Normal120%Above Normal160%180%>= 200%
NOAA Normal
16.99"
Departure from Normal
-1.74" : 90% of Normal
Water Year-To-Date: 20.86"
Oct 1, 2024 to May 30, 2025(193 of 242 days covered by obs)
0%20%40%Below Normal80%Near Normal120%Above Normal160%180%>= 200%
NOAA Normal
27.56"
Departure from Normal
-6.70" : 76% of Normal
Created with Highcharts 11.1.0Monthly Precipitation (inches)Accumulation (inches)Monthly Precipitation NormalsNOAAPRISMNOAA AccumulationPRISM AccumulationJanFebMarAprMayJunJulAugSepOctNovDec01.22.43.64.8012243648
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