Prince George's County, Maryland · Frost dates
Prince George's County frost dates.
First-frost, last-frost, and growing-season length for Prince George's County, Maryland. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-24
- 20%
- 04-19
- 50%
- 04-09
- 80%
- 04-01
- 90%
- 03-27
First fall frost
- 10%
- 10-14
- 20%
- 10-19
- 50%
- 10-29
- 80%
- 11-06
- 90%
- 11-11
28°F — killing freeze
Last spring freeze
- 10%
- 04-12
- 20%
- 04-07
- 50%
- 03-30
- 80%
- 03-19
- 90%
- 03-14
First fall freeze
- 10%
- 10-27
- 20%
- 11-01
- 50%
- 11-10
- 80%
- 11-19
- 90%
- 11-25
Growing season length (days, 28°F threshold)
- Short year
- 198
- Median
- 225
- Long year
- 256
Source NOAA station
UPPER MARLBORO 3 NNW, MD US
4.6 mi · 30 yrs of record (1991–2020) · 130 ft elev.
Data from UPPER MARLBORO 3 NNW, MD US, 4.6 miles away with 30-year NOAA record (1991-2020).
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