Millard County, Utah · Frost dates
Millard County frost dates.
First-frost, last-frost, and growing-season length for Millard County, Utah. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 06-11
- 20%
- 06-05
- 50%
- 05-23
- 80%
- 05-10
- 90%
- 05-05
First fall frost
- 10%
- 09-14
- 20%
- 09-19
- 50%
- 09-27
- 80%
- 10-04
- 90%
- 10-09
28°F — killing freeze
Last spring freeze
- 10%
- 05-27
- 20%
- 05-19
- 50%
- 05-07
- 80%
- 04-28
- 90%
- 04-22
First fall freeze
- 10%
- 09-23
- 20%
- 09-27
- 50%
- 10-05
- 80%
- 10-16
- 90%
- 10-21
Growing season length (days, 28°F threshold)
- Short year
- 119
- Median
- 151
- Long year
- 182
Source NOAA station
BLACK ROCK, UT US
19.7 mi · 30 yrs of record (1991–2020) · 4916 ft elev.
Data from BLACK ROCK, UT US, 19.7 miles away with 30-year NOAA record (1991-2020).
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