Charles County, Maryland · Frost dates

Charles County frost dates.

First-frost, last-frost, and growing-season length for Charles County, Maryland. Sourced from NOAA 1991-2020 Climate Normals.

Data confidence: high · USDA zone: 7a

32°F — light freeze

Last spring frost

10%
04-08
20%
04-05
50%
03-28
80%
03-19
90%
03-14

First fall frost

10%
10-28
20%
11-01
50%
11-08
80%
11-18
90%
11-25

28°F — killing freeze

Last spring freeze

10%
03-30
20%
03-26
50%
03-17
80%
03-06
90%
02-28

First fall freeze

10%
11-07
20%
11-12
50%
11-22
80%
12-04
90%
12-10

Growing season length (days, 28°F threshold)

Short year
222
Median
250
Long year
285

Source NOAA station

QUANTICO MCAS, VA US

15.5 mi · 30 yrs of record (19912020) · 10 ft elev.

Data from QUANTICO MCAS, VA US, 15.5 miles away with 30-year NOAA record (1991-2020).

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