Routt County, Colorado · Frost dates
Routt County frost dates.
First-frost, last-frost, and growing-season length for Routt County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-24
- 20%
- 06-18
- 50%
- 06-09
- 80%
- 05-31
- 90%
- 05-25
First fall frost
- 10%
- 08-31
- 20%
- 09-04
- 50%
- 09-12
- 80%
- 09-20
- 90%
- 09-24
28°F — killing freeze
Last spring freeze
- 10%
- 06-06
- 20%
- 06-01
- 50%
- 05-20
- 80%
- 05-07
- 90%
- 05-02
First fall freeze
- 10%
- 09-09
- 20%
- 09-14
- 50%
- 09-23
- 80%
- 10-02
- 90%
- 10-06
Growing season length (days, 28°F threshold)
- Short year
- 95
- Median
- 126
- Long year
- 157
Source NOAA station
STEAMBOAT SPRINGS, CO US
8.6 mi · 30 yrs of record (1991–2020) · 6866 ft elev.
Data from STEAMBOAT SPRINGS, CO US, 8.6 miles away with 30-year NOAA record (1991-2020).
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