Custer County, Colorado · Frost dates
Custer County frost dates.
First-frost, last-frost, and growing-season length for Custer County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-28
- 20%
- 06-23
- 50%
- 06-11
- 80%
- 06-02
- 90%
- 05-29
First fall frost
- 10%
- 08-28
- 20%
- 09-01
- 50%
- 09-09
- 80%
- 09-18
- 90%
- 09-23
28°F — killing freeze
Last spring freeze
- 10%
- 06-13
- 20%
- 06-07
- 50%
- 05-28
- 80%
- 05-19
- 90%
- 05-16
First fall freeze
- 10%
- 09-06
- 20%
- 09-10
- 50%
- 09-20
- 80%
- 09-29
- 90%
- 10-02
Growing season length (days, 28°F threshold)
- Short year
- 85
- Median
- 115
- Long year
- 139
Source NOAA station
WESTCLIFFE, CO US
5.4 mi · 30 yrs of record (1991–2020) · 7873 ft elev.
Data from WESTCLIFFE, CO US, 5.4 miles away with 30-year NOAA record (1991-2020).
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