Tulsa County, Oklahoma · Frost dates
Tulsa County frost dates.
First-frost, last-frost, and growing-season length for Tulsa County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-17
- 20%
- 04-09
- 50%
- 03-30
- 80%
- 03-18
- 90%
- 03-10
First fall frost
- 10%
- 10-21
- 20%
- 10-26
- 50%
- 11-04
- 80%
- 11-15
- 90%
- 11-20
28°F — killing freeze
Last spring freeze
- 10%
- 04-03
- 20%
- 03-28
- 50%
- 03-15
- 80%
- 03-04
- 90%
- 02-27
First fall freeze
- 10%
- 10-31
- 20%
- 11-03
- 50%
- 11-14
- 80%
- 11-27
- 90%
- 12-02
Growing season length (days, 28°F threshold)
- Short year
- 211
- Median
- 244
- Long year
- 278
Source NOAA station
TULSA R L JONES JR AP, OK US
6.1 mi · 30 yrs of record (1991–2020) · 638 ft elev.
Data from TULSA R L JONES JR AP, OK US, 6.1 miles away with 30-year NOAA record (1991-2020).
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