Viewing Station: VA-HV-11 : Rockville 5.1 W
Apr 13, 2020 - May 8, 20251,823 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 1.22"
May 1-8, 2025(8 of 8 days covered by obs)
NOAA Normal
1.06"
Departure from Normal
0.16" : 115% of Normal
Year-To-Date: 15.91"
Jan 1 to May 8, 2025(125 of 128 days covered by obs)
NOAA Normal
14.38"
Departure from Normal
1.53" : 111% of Normal
Water Year-To-Date: 20.74"
Oct 1, 2024 to May 8, 2025(217 of 220 days covered by obs)
NOAA Normal
25.07"
Departure from Normal
-4.33" : 83% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.30
3.24
0.06
Feb
2.80
2.75
0.05
Mar
3.82
3.69
0.13
Apr
3.40
3.35
0.05
May
4.11
4.13
-0.02
Jun
4.23
4.01
0.22
Jul
4.32
4.07
0.25
Aug
4.09
4.20
-0.11
Sep
4.45
4.30
0.15
Oct
3.76
3.60
0.16
Nov
3.39
3.21
0.18
Dec
3.54
3.53
0.01
45.21
44.08
1.13