Adair County, Oklahoma · Frost dates
Adair County frost dates.
First-frost, last-frost, and growing-season length for Adair County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-20
- 20%
- 04-13
- 50%
- 03-31
- 80%
- 03-17
- 90%
- 03-10
First fall frost
- 10%
- 10-21
- 20%
- 10-26
- 50%
- 11-04
- 80%
- 11-15
- 90%
- 11-19
28°F — killing freeze
Last spring freeze
- 10%
- 04-06
- 20%
- 03-31
- 50%
- 03-17
- 80%
- 03-03
- 90%
- 02-25
First fall freeze
- 10%
- 10-26
- 20%
- 11-02
- 50%
- 11-14
- 80%
- 11-26
- 90%
- 12-01
Growing season length (days, 28°F threshold)
- Short year
- 203
- Median
- 242
- Long year
- 279
Source NOAA station
STILWELL 5 NNW, OK US
0.2 mi · 30 yrs of record (1991–2020) · 1000 ft elev.
Data from STILWELL 5 NNW, OK US, 0.2 miles away with 30-year NOAA record (1991-2020).
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