Summit County, Utah · Frost dates
Summit County frost dates.
First-frost, last-frost, and growing-season length for Summit County, Utah. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
First fall frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
28°F — killing freeze
Last spring freeze
- 10%
- 07-03
- 20%
- 06-29
- 50%
- 06-19
- 80%
- 06-10
- 90%
- 06-05
First fall freeze
- 10%
- 08-22
- 20%
- 08-30
- 50%
- 09-09
- 80%
- 09-18
- 90%
- 09-22
Growing season length (days, 28°F threshold)
- Short year
- 50
- Median
- 82
- Long year
- 109
Source NOAA station
COALVILLE 13 E, UT US
10.4 mi · 30 yrs of record (1991–2020) · 6510 ft elev.
Data from COALVILLE 13 E, UT US, 10.4 miles away with 30-year NOAA record (1991-2020).
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