Elmore County, Idaho · Frost dates
Elmore County frost dates.
First-frost, last-frost, and growing-season length for Elmore County, Idaho. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 07-03
- 20%
- 06-27
- 50%
- 06-16
- 80%
- 06-05
- 90%
- 05-31
First fall frost
- 10%
- 08-20
- 20%
- 08-28
- 50%
- 09-06
- 80%
- 09-16
- 90%
- 09-22
28°F — killing freeze
Last spring freeze
- 10%
- 06-21
- 20%
- 06-14
- 50%
- 05-30
- 80%
- 05-12
- 90%
- 05-06
First fall freeze
- 10%
- 09-02
- 20%
- 09-07
- 50%
- 09-18
- 80%
- 10-01
- 90%
- 10-05
Growing season length (days, 28°F threshold)
- Short year
- 73
- Median
- 111
- Long year
- 152
Source NOAA station
HILL CITY 1 W, ID US
21.0 mi · 30 yrs of record (1991–2020) · 5100 ft elev.
Data from HILL CITY 1 W, ID US, 21 miles away with 30-year NOAA record (1991-2020).
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