Frost dates for Wilburton 9 ENE, OK
At Wilburton 9 ENE, the median last spring frost (32°F) is Apr 2 and the median first fall frost is Nov 5, for a typical growing season of 218 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 2Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 5First fall frost (median)50% chance of 32°F by this date
- 218 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Mar 27 | Apr 14 | Apr 28 |
| 32°F | Mar 12 | Apr 2 | Apr 19 |
| 28°F | Feb 25 | Mar 18 | Apr 7 |
| 24°F | Feb 8 | Mar 3 | Mar 24 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 12 | Oct 28 | Nov 11 |
| 32°F | Oct 22 | Nov 5 | Nov 21 |
| 28°F | Oct 30 | Nov 15 | Dec 1 |
| 24°F | Nov 6 | Nov 27 | Dec 16 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 177 days | 197 days | 219 days |
| 32°F | 194 days | 218 days | 243 days |
| 28°F | 214 days | 240 days | 270 days |
| 24°F | 240 days | 267 days | 297 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 74563 | 7b | 5 to 10°F | 9 km |
| 74578 | 7b | 5 to 10°F | 17 km |
| 74552 | 7b | 5 to 10°F | 18 km |
| 74942 | 7b | 5 to 10°F | 19 km |
| 74561 | 7b | 5 to 10°F | 29 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00349634, at 34.9611, -95.1711, elevation 194 m (635 ft).
- Data quality: Representative (10+ years), 13 years of freeze data.
- Average days per year at or below 32°F: 71.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mc Curtain 1 SE (28 km)
- Tuskahoma (40 km)
- Wister 3s (43 km)
- McAlester Regional Airport (56 km)
- Webbers Falls 5 WSW (58 km)
- Sallisaw 2 NW (64 km)
- Battiest (69 km)
- Smithville (73 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.