Dorchester County, Maryland · Frost dates
Dorchester County frost dates.
First-frost, last-frost, and growing-season length for Dorchester County, Maryland. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-23
- 20%
- 04-19
- 50%
- 04-08
- 80%
- 03-29
- 90%
- 03-24
First fall frost
- 10%
- 10-22
- 20%
- 10-27
- 50%
- 11-04
- 80%
- 11-14
- 90%
- 11-20
28°F — killing freeze
Last spring freeze
- 10%
- 04-12
- 20%
- 04-05
- 50%
- 03-27
- 80%
- 03-16
- 90%
- 03-07
First fall freeze
- 10%
- 11-02
- 20%
- 11-06
- 50%
- 11-17
- 80%
- 11-30
- 90%
- 12-05
Growing season length (days, 28°F threshold)
- Short year
- 204
- Median
- 235
- Long year
- 273
Source NOAA station
VIENNA, MD US
12.9 mi · 30 yrs of record (1991–2020) · 10 ft elev.
Data from VIENNA, MD US, 12.9 miles away with 30-year NOAA record (1991-2020).
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