York County, Maine · Frost dates
York County frost dates.
First-frost, last-frost, and growing-season length for York County, Maine. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-29
- 20%
- 05-24
- 50%
- 05-16
- 80%
- 05-07
- 90%
- 05-02
First fall frost
- 10%
- 09-18
- 20%
- 09-22
- 50%
- 09-30
- 80%
- 10-06
- 90%
- 10-10
28°F — killing freeze
Last spring freeze
- 10%
- 05-17
- 20%
- 05-12
- 50%
- 05-02
- 80%
- 04-25
- 90%
- 04-21
First fall freeze
- 10%
- 09-28
- 20%
- 10-01
- 50%
- 10-07
- 80%
- 10-17
- 90%
- 10-24
Growing season length (days, 28°F threshold)
- Short year
- 134
- Median
- 158
- Long year
- 186
Source NOAA station
SANFORD 2 NNW, ME US
6.0 mi · 30 yrs of record (1991–2020) · 289 ft elev.
Data from SANFORD 2 NNW, ME US, 6 miles away with 30-year NOAA record (1991-2020).
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