Frost dates in Oklahoma City, Oklahoma
NOAA 1991–2020 normals for a 32 °F freeze. Low spots and the edge of town run colder than downtown.
Short answer
The average last spring frost in Oklahoma City is April 4, and the average first fall frost is November 2, from NOAA's Oklahoma City Will Rogers Airport station, 7 miles from the middle of Oklahoma City. 1 year in 10 the last frost comes after April 20, and the first one by October 21. That leaves about 212 frost-free days. Oklahoma City is in USDA planting zone 7b.
Weather stations around Oklahoma City
The first row is the date most people in Oklahoma City go by. The others show how far the dates move across the area.
| Station | Last spring frost | First fall frost | Frost-free |
|---|---|---|---|
| Oklahoma City Will Rogers Airport 7 mi away, 1,285 ft | April 4 1 in 10 after April 20 | November 2 1 in 10 by October 21 | 212 days |
| Oklahoma City Post Airport 9 mi away, 1,297 ft | April 2 1 in 10 after April 18 | November 4 1 in 10 by October 21 | 216 days |
| Spencer 2ENE Mesonet 11 mi away, 1,223 ft | April 2 1 in 10 after April 18 | November 5 1 in 10 by October 20 | 217 days |
| Norman 2NW Mesonet 16 mi away, 1,181 ft | March 31 1 in 10 after April 17 | November 5 1 in 10 by October 21 | 219 days |
| Norman 3SSE 20 mi away, 1,128 ft | April 3 1 in 10 after April 18 | November 3 1 in 10 by October 21 | 214 days |
Distances are from the middle of Oklahoma City as the Census Bureau maps it. The average date is NOAA's 50% date: half of years have a later last frost, or an earlier first one. Plan by the 1-in-10 date if a freeze would cost you plants. The planting zone is the USDA 2023 zone for ZIP code 73102, at the middle of the city.
Your exact ZIP code
Oklahoma City covers a lot of ground. For the station nearest your own street, and its planting zone, type your ZIP code.
How these dates work
Frost dates come from NOAA's 1991 to 2020 Climate Normals, which work out from each weather station's daily lows how likely the last spring freeze and the first fall freeze (32 °F) are by each date. We use the station nearest the middle of your ZIP code and show its height and distance, since a station on a hill or by a lake can differ from your yard.
The average date is the 50% date: half of years have a freeze after the spring date or before the fall one. The 1-in-10 dates are NOAA's 10% dates, the ones to plan by if a late freeze would cost you plants. Within one yard, cold air pools in low spots while walls and paving hold heat, so some corners freeze before others.
More frost dates
All of Oklahoma, station by station.
Other Oklahoma cities: Tulsa
Nearby: Wichita, KS · Denton, TX · McKinney, TX
Where the numbers come from
- USDA Plant Hardiness Zone Map, 2023. Agricultural Research Service, U.S. Department of Agriculture
- PRISM Climate Group, Oregon State University (zone data)
- NOAA NCEI, U.S. Climate Normals 1991–2020, annual/seasonal
- NOAA, Normals calculation methodology (frost-freeze probability dates)
- US Census Bureau, 2025 ZCTA gazetteer (ZIP code centers)
- US Census Bureau, 2025 city population estimates and place gazetteer