Viewing Station: VA-HV-11 : Rockville 5.1 W
Apr 13, 2020 - Mar 4, 20262,102 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.17"
March 1-4, 2026(4 of 4 days covered by obs)
NOAA Normal
0.49"
Departure from Normal
-0.32" : 34% of Normal
Year-To-Date: 6.20"
Jan 1 to Mar 4, 2026(57 of 63 days covered by obs)
NOAA Normal
6.59"
Departure from Normal
-0.39" : 94% of Normal
Water Year-To-Date: 11.24"
Oct 1, 2025 to Mar 4, 2026(146 of 155 days covered by obs)
NOAA Normal
17.28"
Departure from Normal
-6.04" : 65% 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