Salt Lake County, Utah · Frost dates
Salt Lake County frost dates.
First-frost, last-frost, and growing-season length for Salt Lake County, Utah. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 04-19
- 20%
- 04-12
- 50%
- 03-31
- 80%
- 03-13
- 90%
- 03-07
First fall frost
- 10%
- 10-23
- 20%
- 10-28
- 50%
- 11-08
- 80%
- 11-20
- 90%
- 11-25
28°F — killing freeze
Last spring freeze
- 10%
- 04-02
- 20%
- 03-27
- 50%
- 03-08
- 80%
- 02-24
- 90%
- 02-17
First fall freeze
- 10%
- 11-01
- 20%
- 11-07
- 50%
- 11-18
- 80%
- 12-01
- 90%
- 12-06
Growing season length (days, 28°F threshold)
- Short year
- 213
- Median
- 255
- Long year
- 292
Source NOAA station
SALT LAKE TRIAD CTR, UT US
7.3 mi · 30 yrs of record (1991–2020) · 4280 ft elev.
Data from SALT LAKE TRIAD CTR, UT US, 7.3 miles away with 30-year NOAA record (1991-2020).
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