Frost dates for Lawton, OK
At Lawton, the median last spring frost (32°F) is Mar 26 and the median first fall frost is Nov 7, for a typical growing season of 225 days. For a 90% chance that the last frost has passed, wait until Apr 14. Nearby ZIP codes are in USDA hardiness zones 7b to 8a.
- Mar 26Last spring frost (median)50% chance of 32°F after this date
- Apr 14Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 225 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 20 | Apr 7 | Apr 24 |
| 32°F | Mar 4 | Mar 26 | Apr 14 |
| 28°F | Feb 22 | Mar 11 | Apr 3 |
| 24°F | Feb 8 | Feb 28 | Mar 19 |
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 16 | Oct 29 | Nov 13 |
| 32°F | Oct 21 | Nov 7 | Nov 22 |
| 28°F | Oct 30 | Nov 16 | Dec 5 |
| 24°F | Nov 9 | Nov 30 | Dec 18 |
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 | 182 days | 204 days | 228 days |
| 32°F | 200 days | 225 days | 253 days |
| 28°F | 221 days | 252 days | 277 days |
| 24°F | 248 days | 275 days | 304 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 |
|---|---|---|---|
| 73505 | 7b | 5 to 10°F | 5 km |
| 73503 | 8a | 10 to 15°F | 9 km |
| 73527 | 8a | 10 to 15°F | 16 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 USC00345063, at 34.6097, -98.4572, elevation 350 m (1,150 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 70.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lawton Muni Airport (7 km)
- Medicine Pk 3w Mesonet (17 km)
- Walters 4nw Mesonet (25 km)
- Wichita Mountain Wr (27 km)
- Chattanooga (27 km)
- Walters (31 km)
- Apache 4ene Mesonet (37 km)
- Acme Mesonet (45 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.