Grant County, Oklahoma · Frost dates
Grant County frost dates.
First-frost, last-frost, and growing-season length for Grant County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-27
- 20%
- 04-22
- 50%
- 04-10
- 80%
- 03-31
- 90%
- 03-26
First fall frost
- 10%
- 10-14
- 20%
- 10-19
- 50%
- 10-28
- 80%
- 11-05
- 90%
- 11-10
28°F — killing freeze
Last spring freeze
- 10%
- 04-17
- 20%
- 04-11
- 50%
- 04-01
- 80%
- 03-18
- 90%
- 03-12
First fall freeze
- 10%
- 10-21
- 20%
- 10-27
- 50%
- 11-04
- 80%
- 11-14
- 90%
- 11-20
Growing season length (days, 28°F threshold)
- Short year
- 187
- Median
- 217
- Long year
- 253
Source NOAA station
MEDFORD 1SW MESONET, OK US
2.4 mi · 30 yrs of record (1991–2020) · 1089 ft elev.
Data from MEDFORD 1SW MESONET, OK US, 2.4 miles away with 30-year NOAA record (1991-2020).
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