Phillips County, Colorado · Frost dates
Phillips County frost dates.
First-frost, last-frost, and growing-season length for Phillips County, Colorado. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 05-23
- 20%
- 05-18
- 50%
- 05-11
- 80%
- 05-04
- 90%
- 04-30
First fall frost
- 10%
- 09-20
- 20%
- 09-26
- 50%
- 10-03
- 80%
- 10-10
- 90%
- 10-13
28°F — killing freeze
Last spring freeze
- 10%
- 05-14
- 20%
- 05-10
- 50%
- 05-01
- 80%
- 04-22
- 90%
- 04-17
First fall freeze
- 10%
- 09-29
- 20%
- 10-03
- 50%
- 10-12
- 80%
- 10-18
- 90%
- 10-21
Growing season length (days, 28°F threshold)
- Short year
- 138
- Median
- 164
- Long year
- 187
Source NOAA station
HOLYOKE, CO US
3.4 mi · 30 yrs of record (1991–2020) · 3780 ft elev.
Data from HOLYOKE, CO US, 3.4 miles away with 30-year NOAA record (1991-2020).
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