Clark County, Idaho · Frost dates
Clark County frost dates.
First-frost, last-frost, and growing-season length for Clark County, Idaho. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-21
- 20%
- 06-16
- 50%
- 06-05
- 80%
- 05-19
- 90%
- 05-11
First fall frost
- 10%
- 09-03
- 20%
- 09-09
- 50%
- 09-20
- 80%
- 09-30
- 90%
- 10-04
28°F — killing freeze
Last spring freeze
- 10%
- 06-08
- 20%
- 05-30
- 50%
- 05-10
- 80%
- 05-01
- 90%
- 04-25
First fall freeze
- 10%
- 09-14
- 20%
- 09-21
- 50%
- 10-02
- 80%
- 10-11
- 90%
- 10-15
Growing season length (days, 28°F threshold)
- Short year
- 98
- Median
- 145
- Long year
- 173
Source NOAA station
SMALL 6N, ID US
2.7 mi · 30 yrs of record (1991–2020) · 5740 ft elev.
Data from SMALL 6N, ID US, 2.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.