Carroll County, Maryland · Frost dates
Carroll County frost dates.
First-frost, last-frost, and growing-season length for Carroll County, Maryland. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 05-11
- 20%
- 05-06
- 50%
- 04-24
- 80%
- 04-14
- 90%
- 04-09
First fall frost
- 10%
- 10-06
- 20%
- 10-09
- 50%
- 10-20
- 80%
- 10-30
- 90%
- 11-02
28°F — killing freeze
Last spring freeze
- 10%
- 04-26
- 20%
- 04-20
- 50%
- 04-09
- 80%
- 03-31
- 90%
- 03-26
First fall freeze
- 10%
- 10-14
- 20%
- 10-20
- 50%
- 10-31
- 80%
- 11-09
- 90%
- 11-14
Growing season length (days, 28°F threshold)
- Short year
- 171
- Median
- 205
- Long year
- 233
Source NOAA station
HANOVER 4 SW, PA US
14.4 mi · 30 yrs of record (1991–2020) · 558 ft elev.
Data from HANOVER 4 SW, PA US, 14.4 miles away with 30-year NOAA record (1991-2020).
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