Frost dates in Oklahoma
Across Oklahoma, the typical last spring frost is around Apr 4 and the first fall frost around Nov 2. Your own dates depend on where you are in the state; find your county below.
Most of the state's last spring frosts fall between Mar 28 and Apr 11, and its first fall frosts between Oct 27 and Nov 6.
These are the dates with a 50% chance of a 32°F frost on or after (spring) or on or before (fall), so plan tender crops a week or two after the spring date and keep row cover handy. For dates at your exact ZIP code, use the zone and frost date lookup; for what to plant when, see the planting guide by frost date.
Hardiness zones in Oklahoma: zone 6b, zone 7a, zone 7b, zone 8a
Frost dates by county in Oklahoma
| County | Last spring frost | First fall frost | Growing season |
|---|---|---|---|
| Adair | Mar 31 | Nov 4 | About 218 days |
| Alfalfa | Apr 9 | Oct 31 | About 205 days |
| Atoka | Mar 29 | Nov 4 | About 220 days |
| Beaver | Apr 17 | Oct 27 | About 193 days |
| Beckham | Apr 5 | Nov 2 | About 211 days |
| Blaine | Apr 7 | Nov 2 | About 209 days |
| Bryan | Mar 19 | Nov 12 | About 238 days |
| Caddo | Apr 5 | Nov 1 | About 210 days |
| Canadian | Apr 6 | Nov 2 | About 210 days |
| Carter | Apr 6 | Nov 1 | About 209 days |
| Cherokee | Apr 4 | Oct 31 | About 210 days |
| Choctaw | Mar 15 | Nov 15 | About 245 days |
| Cimarron | Apr 26 | Oct 20 | About 177 days |
| Cleveland | Mar 31 | Nov 5 | About 219 days |
| Coal | Mar 31 | Nov 1 | About 215 days |
| Comanche | Mar 28 | Nov 6 | About 223 days |
| Cotton | Apr 1 | Nov 5 | About 218 days |
| Craig | Apr 6 | Oct 30 | About 207 days |
| Creek | Apr 6 | Oct 29 | About 206 days |
| Custer | Apr 9 | Nov 1 | About 206 days |
| Delaware | Mar 31 | Nov 2 | About 216 days |
| Dewey | Apr 15 | Oct 23 | About 191 days |
| Ellis | Apr 17 | Oct 20 | About 186 days |
| Garfield | Apr 10 | Oct 31 | About 204 days |
| Garvin | Apr 4 | Nov 2 | About 212 days |
| Grady | Apr 4 | Nov 1 | About 211 days |
| Grant | Apr 10 | Oct 28 | About 201 days |
| Greer | Apr 8 | Nov 2 | About 208 days |
| Harmon | Apr 5 | Oct 31 | About 209 days |
| Harper | Apr 13 | Oct 28 | About 198 days |
| Haskell | Mar 23 | Nov 5 | About 227 days |
| Hughes | Mar 29 | Nov 5 | About 221 days |
| Jackson | Apr 5 | Nov 2 | About 211 days |
| Jefferson | Mar 24 | Nov 7 | About 228 days |
| Johnston | Mar 29 | Nov 5 | About 221 days |
| Kay | Apr 12 | Oct 29 | About 200 days |
| Kingfisher | Apr 14 | Nov 1 | About 201 days |
| Kiowa | Apr 4 | Nov 4 | About 214 days |
| Latimer | Apr 2 | Nov 5 | About 217 days |
| Le Flore | Apr 6 | Nov 2 | About 210 days |
| Lincoln | Apr 4 | Nov 2 | About 212 days |
| Logan | Apr 3 | Nov 1 | About 212 days |
| Love | Mar 31 | Nov 4 | About 218 days |
| Major | Apr 7 | Nov 1 | About 208 days |
| Marshall | Mar 27 | Nov 8 | About 226 days |
| Mayes | Apr 7 | Nov 2 | About 209 days |
| McClain | Apr 3 | Nov 4 | About 215 days |
| McCurtain | Mar 31 | Nov 3 | About 217 days |
| McIntosh | Apr 2 | Nov 2 | About 214 days |
| Murray | Apr 4 | Oct 31 | About 210 days |
| Muskogee | Apr 2 | Nov 2 | About 214 days |
| Noble | Apr 8 | Oct 28 | About 203 days |
| Nowata | Apr 6 | Nov 1 | About 209 days |
| Okfuskee | Mar 24 | Nov 9 | About 230 days |
| Oklahoma | Apr 2 | Nov 4 | About 216 days |
| Okmulgee | Apr 8 | Oct 28 | About 203 days |
| Osage | Apr 6 | Oct 30 | About 207 days |
| Ottawa | Apr 6 | Oct 27 | About 204 days |
| Pawnee | Apr 6 | Oct 29 | About 206 days |
| Payne | Apr 3 | Oct 31 | About 211 days |
| Pittsburg | Mar 31 | Nov 3 | About 217 days |
| Pontotoc | Mar 29 | Nov 6 | About 222 days |
| Pottawatomie | Mar 30 | Nov 5 | About 220 days |
| Pushmataha | Apr 11 | Nov 1 | About 204 days |
| Roger Mills | Apr 9 | Oct 27 | About 201 days |
| Rogers | Apr 7 | Oct 30 | About 206 days |
| Seminole | Apr 5 | Nov 1 | About 210 days |
| Sequoyah | Mar 30 | Nov 7 | About 222 days |
| Stephens | Mar 25 | Nov 7 | About 227 days |
| Texas | Apr 18 | Oct 24 | About 189 days |
| Tillman | Mar 31 | Nov 6 | About 220 days |
| Tulsa | Mar 31 | Nov 4 | About 218 days |
| Wagoner | Apr 1 | Nov 1 | About 214 days |
| Washington | Apr 11 | Oct 24 | About 196 days |
| Washita | Apr 5 | Nov 1 | About 210 days |
| Woods | Apr 11 | Oct 26 | About 198 days |
| Woodward | Apr 19 | Oct 26 | About 190 days |
Source: NOAA NCEI U.S. Climate Normals 1991–2020, 50% probability of 32°F, from the weather station nearest each ZIP code; each county shows the middle value across its ZIP codes. Hills, valleys and cities can run a week or more earlier or later.