Okmulgee County, Oklahoma · Frost dates
Okmulgee County frost dates.
First-frost, last-frost, and growing-season length for Okmulgee County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-25
- 20%
- 04-20
- 50%
- 04-08
- 80%
- 03-28
- 90%
- 03-23
First fall frost
- 10%
- 10-12
- 20%
- 10-19
- 50%
- 10-28
- 80%
- 11-06
- 90%
- 11-11
28°F — killing freeze
Last spring freeze
- 10%
- 04-15
- 20%
- 04-08
- 50%
- 03-29
- 80%
- 03-16
- 90%
- 03-11
First fall freeze
- 10%
- 10-22
- 20%
- 10-28
- 50%
- 11-06
- 80%
- 11-18
- 90%
- 11-23
Growing season length (days, 28°F threshold)
- Short year
- 190
- Median
- 222
- Long year
- 257
Source NOAA station
OKMULGEE WTR WKS, OK US
3.6 mi · 30 yrs of record (1991–2020) · 647 ft elev.
Data from OKMULGEE WTR WKS, OK US, 3.6 miles away with 30-year NOAA record (1991-2020).
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