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 (19912020) · 3780 ft elev.

Data from HOLYOKE, CO US, 3.4 miles away with 30-year NOAA record (1991-2020).

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