Frost dates for McAlester Regional Airport, OK
At McAlester Regional Airport, the median last spring frost (32°F) is Mar 31 and the median first fall frost is Nov 3, for a typical growing season of 216 days. For a 90% chance that the last frost has passed, wait until Apr 18. Nearby ZIP codes are in USDA hardiness zone 7b.
- Mar 31Last spring frost (median)50% chance of 32°F after this date
- Apr 18Safer planting date10% chance of 32°F after this date
- Nov 3First fall frost (median)50% chance of 32°F by this date
- 216 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 11 | Apr 29 |
| 32°F | Mar 11 | Mar 31 | Apr 18 |
| 28°F | Feb 26 | Mar 15 | Apr 5 |
| 24°F | Feb 14 | Mar 4 | Mar 22 |
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 26 | Nov 7 |
| 32°F | Oct 20 | Nov 3 | Nov 19 |
| 28°F | Oct 28 | Nov 13 | Dec 2 |
| 24°F | Nov 6 | Nov 26 | Dec 15 |
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 | 175 days | 196 days | 216 days |
| 32°F | 193 days | 216 days | 241 days |
| 28°F | 214 days | 242 days | 269 days |
| 24°F | 238 days | 266 days | 294 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 |
|---|---|---|---|
| 74554 | 7b | 5 to 10°F | 8 km |
| 74565 | 7b | 5 to 10°F | 8 km |
| 74522 | 7b | 5 to 10°F | 10 km |
| 74501 | 7b | 5 to 10°F | 11 km |
| 74547 | 7b | 5 to 10°F | 19 km |
| 74546 | 7b | 5 to 10°F | 19 km |
| 74528 | 7b | 5 to 10°F | 21 km |
| 74553 | 7b | 5 to 10°F | 23 km |
| 74560 | 7b | 5 to 10°F | 26 km |
| 74442 | 7b | 5 to 10°F | 27 km |
| 74570 | 7b | 5 to 10°F | 29 km |
| 74430 | 7b | 5 to 10°F | 30 km |
| 74425 | 7b | 5 to 10°F | 35 km |
| 74845 | 7b | 5 to 10°F | 42 km |
| 74432 | 7b | 5 to 10°F | 46 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 USW00093950, at 34.8822, -95.7831, elevation 235 m (770 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 66.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Tuskahoma (55 km)
- Holdenville 3ese Mesonet (56 km)
- Wilburton 9 ENE (56 km)
- Centrahoma 2 ESE (58 km)
- Holdenville 2sse (58 km)
- Centrahoma 1e Mesonet (59 km)
- Atoka (63 km)
- McGee Creek Dam (64 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.