Delta County, Colorado · Frost dates
Delta County frost dates.
First-frost, last-frost, and growing-season length for Delta County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-21
- 20%
- 05-15
- 50%
- 05-03
- 80%
- 04-26
- 90%
- 04-22
First fall frost
- 10%
- 09-27
- 20%
- 10-01
- 50%
- 10-09
- 80%
- 10-19
- 90%
- 10-24
28°F — killing freeze
Last spring freeze
- 10%
- 05-10
- 20%
- 05-04
- 50%
- 04-25
- 80%
- 04-14
- 90%
- 04-08
First fall freeze
- 10%
- 10-04
- 20%
- 10-09
- 50%
- 10-19
- 80%
- 10-29
- 90%
- 11-04
Growing season length (days, 28°F threshold)
- Short year
- 147
- Median
- 177
- Long year
- 210
Source NOAA station
CEDAREDGE 3E, CO US
3.3 mi · 30 yrs of record (1991–2020) · 6838 ft elev.
Data from CEDAREDGE 3E, CO US, 3.3 miles away with 30-year NOAA record (1991-2020).
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