Platte County, Wyoming · Frost dates
Platte County frost dates.
First-frost, last-frost, and growing-season length for Platte County, Wyoming. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5a
32°F — light freeze
Last spring frost
- 10%
- 06-02
- 20%
- 05-28
- 50%
- 05-19
- 80%
- 05-10
- 90%
- 05-07
First fall frost
- 10%
- 09-08
- 20%
- 09-13
- 50%
- 09-22
- 80%
- 10-01
- 90%
- 10-04
28°F — killing freeze
Last spring freeze
- 10%
- 05-22
- 20%
- 05-17
- 50%
- 05-09
- 80%
- 05-01
- 90%
- 04-27
First fall freeze
- 10%
- 09-17
- 20%
- 09-22
- 50%
- 10-01
- 80%
- 10-10
- 90%
- 10-14
Growing season length (days, 28°F threshold)
- Short year
- 118
- Median
- 145
- Long year
- 170
Source NOAA station
WHEATLAND 4 N, WY US
1.5 mi · 30 yrs of record (1991–2020) · 4638 ft elev.
Data from WHEATLAND 4 N, WY US, 1.5 miles away with 30-year NOAA record (1991-2020).
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