McClain County, Oklahoma · Frost dates
McClain County frost dates.
First-frost, last-frost, and growing-season length for McClain County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-24
- 20%
- 04-18
- 50%
- 04-04
- 80%
- 03-25
- 90%
- 03-18
First fall frost
- 10%
- 10-18
- 20%
- 10-24
- 50%
- 11-02
- 80%
- 11-11
- 90%
- 11-18
28°F — killing freeze
Last spring freeze
- 10%
- 04-10
- 20%
- 04-04
- 50%
- 03-23
- 80%
- 03-11
- 90%
- 03-03
First fall freeze
- 10%
- 10-25
- 20%
- 10-31
- 50%
- 11-11
- 80%
- 11-21
- 90%
- 11-27
Growing season length (days, 28°F threshold)
- Short year
- 198
- Median
- 233
- Long year
- 269
Source NOAA station
PURCELL 2 SW, OK US
4.3 mi · 30 yrs of record (1991–2020) · 1120 ft elev.
Data from PURCELL 2 SW, OK US, 4.3 miles away with 30-year NOAA record (1991-2020).
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