Latah County, Idaho · Frost dates
Latah County frost dates.
First-frost, last-frost, and growing-season length for Latah County, Idaho. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 5b
32°F — light freeze
Last spring frost
- 10%
- 06-02
- 20%
- 05-28
- 50%
- 05-15
- 80%
- 05-04
- 90%
- 04-30
First fall frost
- 10%
- 08-31
- 20%
- 09-06
- 50%
- 09-21
- 80%
- 10-01
- 90%
- 10-07
28°F — killing freeze
Last spring freeze
- 10%
- 05-13
- 20%
- 05-08
- 50%
- 04-28
- 80%
- 04-14
- 90%
- 04-04
First fall freeze
- 10%
- 09-18
- 20%
- 09-26
- 50%
- 10-05
- 80%
- 10-18
- 90%
- 10-27
Growing season length (days, 28°F threshold)
- Short year
- 128
- Median
- 160
- Long year
- 206
Source NOAA station
POTLATCH 3 NNE, ID US
11.4 mi · 30 yrs of record (1991–2020) · 2760 ft elev.
Data from POTLATCH 3 NNE, ID US, 11.4 miles away with 30-year NOAA record (1991-2020).
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