Viewing Station: MD-SM-18 : Mechanicsville 3.8 N
Mar 27, 2019 - Apr 21, 20262,559 Total Observations
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Climatology

Precipitation Normals Comparison

Month-To-Date: 0.83"
April 1-21, 2026(21 of 21 days covered by obs)
NOAA Normal
2.28"
Departure from Normal
-1.45" : 36% of Normal
Year-To-Date: 7.39"
Jan 1 to Apr 21, 2026(110 of 111 days covered by obs)
NOAA Normal
12.09"
Departure from Normal
-4.70" : 61% of Normal
Water Year-To-Date: 12.50"
Oct 1, 2025 to Apr 21, 2026(202 of 203 days covered by obs)
NOAA Normal
22.80"
Departure from Normal
-10.30" : 55% of Normal
MonthNOAA Normals (in)PRISM Normals (in)Diff (in)
Jan
3.13
3.15
-0.02
Feb
2.70
2.86
-0.16
Mar
3.98
4.04
-0.06
Apr
3.26
3.25
0.01
May
4.00
4.19
-0.19
Jun
4.15
4.21
-0.06
Jul
4.40
4.49
-0.09
Aug
4.49
4.70
-0.21
Sep
4.67
4.57
0.10
Oct
3.88
4.07
-0.19
Nov
3.18
3.24
-0.06
Dec
3.65
3.83
-0.18
45.49
46.60
-1.11