Rio Grande County, Colorado · Frost dates
Rio Grande County frost dates.
First-frost, last-frost, and growing-season length for Rio Grande County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-25
- 20%
- 06-20
- 50%
- 06-11
- 80%
- 06-04
- 90%
- 06-01
First fall frost
- 10%
- 09-01
- 20%
- 09-05
- 50%
- 09-13
- 80%
- 09-20
- 90%
- 09-24
28°F — killing freeze
Last spring freeze
- 10%
- 06-12
- 20%
- 06-07
- 50%
- 05-30
- 80%
- 05-19
- 90%
- 05-15
First fall freeze
- 10%
- 09-11
- 20%
- 09-15
- 50%
- 09-23
- 80%
- 10-01
- 90%
- 10-04
Growing season length (days, 28°F threshold)
- Short year
- 91
- Median
- 116
- Long year
- 142
Source NOAA station
MONTE VISTA 2W, CO US
16.0 mi · 30 yrs of record (1991–2020) · 7695 ft elev.
Data from MONTE VISTA 2W, CO US, 16 miles away with 30-year NOAA record (1991-2020).
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