Laramie County, Wyoming · Frost dates
Laramie County frost dates.
First-frost, last-frost, and growing-season length for Laramie County, Wyoming. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-06
- 20%
- 06-01
- 50%
- 05-21
- 80%
- 05-12
- 90%
- 05-08
First fall frost
- 10%
- 09-08
- 20%
- 09-14
- 50%
- 09-24
- 80%
- 10-01
- 90%
- 10-05
28°F — killing freeze
Last spring freeze
- 10%
- 05-24
- 20%
- 05-18
- 50%
- 05-09
- 80%
- 05-01
- 90%
- 04-28
First fall freeze
- 10%
- 09-18
- 20%
- 09-24
- 50%
- 10-01
- 80%
- 10-11
- 90%
- 10-16
Growing season length (days, 28°F threshold)
- Short year
- 117
- Median
- 145
- Long year
- 171
Source NOAA station
ARCHER, WY US
9.8 mi · 30 yrs of record (1991–2020) · 6010 ft elev.
Data from ARCHER, WY US, 9.8 miles away with 30-year NOAA record (1991-2020).
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