Blaine County, Idaho · Frost dates
Blaine County frost dates.
First-frost, last-frost, and growing-season length for Blaine County, Idaho. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-30
- 20%
- 06-25
- 50%
- 06-16
- 80%
- 06-08
- 90%
- 06-03
First fall frost
- 10%
- 08-25
- 20%
- 08-31
- 50%
- 09-09
- 80%
- 09-20
- 90%
- 09-24
28°F — killing freeze
Last spring freeze
- 10%
- 06-19
- 20%
- 06-14
- 50%
- 06-02
- 80%
- 05-15
- 90%
- 05-09
First fall freeze
- 10%
- 09-05
- 20%
- 09-12
- 50%
- 09-23
- 80%
- 10-03
- 90%
- 10-07
Growing season length (days, 28°F threshold)
- Short year
- 78
- Median
- 113
- Long year
- 151
Source NOAA station
PICABO, ID US
8.1 mi · 30 yrs of record (1991–2020) · 4839 ft elev.
Data from PICABO, ID US, 8.1 miles away with 30-year NOAA record (1991-2020).
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