Wallowa County, Oregon · Frost dates
Wallowa County frost dates.
First-frost, last-frost, and growing-season length for Wallowa County, Oregon. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 8b
32°F — light freeze
Last spring frost
- 10%
- 07-08
- 20%
- 06-30
- 50%
- 06-08
- 80%
- 05-24
- 90%
- 05-18
First fall frost
- 10%
- 08-16
- 20%
- 08-24
- 50%
- 09-05
- 80%
- 09-16
- 90%
- 09-22
28°F — killing freeze
Last spring freeze
- 10%
- 06-05
- 20%
- 05-28
- 50%
- 05-13
- 80%
- 05-02
- 90%
- 04-28
First fall freeze
- 10%
- 09-03
- 20%
- 09-10
- 50%
- 09-22
- 80%
- 10-02
- 90%
- 10-09
Growing season length (days, 28°F threshold)
- Short year
- 90
- Median
- 132
- Long year
- 164
Source NOAA station
ENTERPRISE 20 NNE, OR US
8.1 mi · 30 yrs of record (1991–2020) · 3280 ft elev.
Data from ENTERPRISE 20 NNE, OR US, 8.1 miles away with 30-year NOAA record (1991-2020).
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