Asotin County, Washington · Frost dates
Asotin County frost dates.
First-frost, last-frost, and growing-season length for Asotin County, Washington. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 04-26
- 20%
- 04-19
- 50%
- 04-06
- 80%
- 03-27
- 90%
- 03-20
First fall frost
- 10%
- 10-10
- 20%
- 10-14
- 50%
- 10-26
- 80%
- 11-05
- 90%
- 11-12
28°F — killing freeze
Last spring freeze
- 10%
- 04-04
- 20%
- 03-30
- 50%
- 03-15
- 80%
- 03-02
- 90%
- 02-25
First fall freeze
- 10%
- 10-20
- 20%
- 10-27
- 50%
- 11-08
- 80%
- 11-23
- 90%
- 11-28
Growing season length (days, 28°F threshold)
- Short year
- 199
- Median
- 238
- Long year
- 276
Source NOAA station
LEWISTON NEZ PERCE CO AP, ID US
16.7 mi · 30 yrs of record (1991–2020) · 1436 ft elev.
Data from LEWISTON NEZ PERCE CO AP, ID US, 16.7 miles away with 30-year NOAA record (1991-2020).
Bield Farm earns its predictions.
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