Viewing Station: VA-HV-11 : Rockville 5.1 W
Apr 13, 2020 - Jul 29, 20262,240 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 5.19"
July 1-29, 2026(29 of 29 days covered by obs)
NOAA Normal
4.04"
Departure from Normal
1.15" : 128% of Normal
Year-To-Date: 18.36"
Jan 1 to Jul 29, 2026(195 of 210 days covered by obs)
NOAA Normal
25.70"
Departure from Normal
-7.34" : 71% of Normal
Water Year-To-Date: 23.40"
Oct 1, 2025 to Jul 29, 2026(284 of 302 days covered by obs)
NOAA Normal
36.39"
Departure from Normal
-12.99" : 64% 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