Grady County, Oklahoma · Frost dates
Grady County frost dates.
First-frost, last-frost, and growing-season length for Grady County, Oklahoma. Sourced from NOAA 1991-2020 Climate Normals.
Data confidence: high · USDA zone: 7a
32°F — light freeze
Last spring frost
- 10%
- 04-21
- 20%
- 04-17
- 50%
- 04-06
- 80%
- 03-28
- 90%
- 03-20
First fall frost
- 10%
- 10-17
- 20%
- 10-22
- 50%
- 11-01
- 80%
- 11-09
- 90%
- 11-14
28°F — killing freeze
Last spring freeze
- 10%
- 04-11
- 20%
- 04-05
- 50%
- 03-25
- 80%
- 03-11
- 90%
- 03-05
First fall freeze
- 10%
- 10-25
- 20%
- 10-30
- 50%
- 11-08
- 80%
- 11-19
- 90%
- 11-25
Growing season length (days, 28°F threshold)
- Short year
- 197
- Median
- 228
- Long year
- 265
Source NOAA station
CHICKASHA 2SSE MESONET, OK US
1.7 mi · 30 yrs of record (1991–2020) · 1076 ft elev.
Data from CHICKASHA 2SSE MESONET, OK US, 1.7 miles away with 30-year NOAA record (1991-2020).
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