Washington County, Utah · Frost dates
Washington County frost dates.
First-frost, last-frost, and growing-season length for Washington County, Utah. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 6b
32°F — light freeze
Last spring frost
- 10%
- 04-28
- 20%
- 04-21
- 50%
- 04-09
- 80%
- 03-28
- 90%
- 03-18
First fall frost
- 10%
- 10-21
- 20%
- 10-25
- 50%
- 11-05
- 80%
- 11-14
- 90%
- 11-18
28°F — killing freeze
Last spring freeze
- 10%
- 04-11
- 20%
- 04-05
- 50%
- 03-18
- 80%
- 03-01
- 90%
- 02-24
First fall freeze
- 10%
- 10-31
- 20%
- 11-06
- 50%
- 11-16
- 80%
- 11-24
- 90%
- 11-29
Growing season length (days, 28°F threshold)
- Short year
- 203
- Median
- 243
- Long year
- 278
Source NOAA station
VEYO POWERHOUSE, UT US
11.6 mi · 30 yrs of record (1991–2020) · 4600 ft elev.
Data from VEYO POWERHOUSE, UT US, 11.6 miles away with 30-year NOAA record (1991-2020).
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