Costilla County, Colorado · Frost dates
Costilla County frost dates.
First-frost, last-frost, and growing-season length for Costilla County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-14
- 20%
- 06-09
- 50%
- 05-31
- 80%
- 05-19
- 90%
- 05-14
First fall frost
- 10%
- 09-10
- 20%
- 09-14
- 50%
- 09-23
- 80%
- 10-01
- 90%
- 10-05
28°F — killing freeze
Last spring freeze
- 10%
- 06-02
- 20%
- 05-26
- 50%
- 05-13
- 80%
- 05-02
- 90%
- 04-29
First fall freeze
- 10%
- 09-17
- 20%
- 09-22
- 50%
- 09-30
- 80%
- 10-09
- 90%
- 10-14
Growing season length (days, 28°F threshold)
- Short year
- 107
- Median
- 140
- Long year
- 168
Source NOAA station
SAN LUIS 1 S, CO US
5.7 mi · 30 yrs of record (1991–2020) · 7943 ft elev.
Data from SAN LUIS 1 S, CO US, 5.7 miles away with 30-year NOAA record (1991-2020).
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