Kennebec County, Maine · Frost dates
Kennebec County frost dates.
First-frost, last-frost, and growing-season length for Kennebec County, Maine. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-07
- 20%
- 05-03
- 50%
- 04-27
- 80%
- 04-19
- 90%
- 04-15
First fall frost
- 10%
- 10-02
- 20%
- 10-06
- 50%
- 10-16
- 80%
- 10-26
- 90%
- 10-31
28°F — killing freeze
Last spring freeze
- 10%
- 04-26
- 20%
- 04-22
- 50%
- 04-15
- 80%
- 04-07
- 90%
- 04-03
First fall freeze
- 10%
- 10-14
- 20%
- 10-20
- 50%
- 10-31
- 80%
- 11-07
- 90%
- 11-12
Growing season length (days, 28°F threshold)
- Short year
- 171
- Median
- 199
- Long year
- 223
Source NOAA station
AUGUSTA STATE AP, ME US
6.8 mi · 30 yrs of record (1991–2020) · 350 ft elev.
Data from AUGUSTA STATE AP, ME US, 6.8 miles away with 30-year NOAA record (1991-2020).
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