Idaho County, Idaho · Frost dates
Idaho County frost dates.
First-frost, last-frost, and growing-season length for Idaho County, Idaho. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
First fall frost
- 10%
- —
- 20%
- —
- 50%
- —
- 80%
- —
- 90%
- —
28°F — killing freeze
Last spring freeze
- 10%
- 06-12
- 20%
- 05-31
- 50%
- 05-22
- 80%
- 05-12
- 90%
- 05-07
First fall freeze
- 10%
- 08-22
- 20%
- 08-28
- 50%
- 09-07
- 80%
- 09-17
- 90%
- 09-23
Growing season length (days, 28°F threshold)
- Short year
- 71
- Median
- 108
- Long year
- 139
Source NOAA station
ELK CITY 1NE, ID US
1.0 mi · 30 yrs of record (1991–2020) · 4058 ft elev.
Data from ELK CITY 1NE, ID US, 1 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
14-day free trial. No credit card. Cancel anytime.