Frost dates for Acme Mesonet, OK
At Acme Mesonet, the median last spring frost (32°F) is Apr 4 and the median first fall frost is Oct 31, for a typical growing season of 210 days. For a 90% chance that the last frost has passed, wait until Apr 23. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 4Last spring frost (median)50% chance of 32°F after this date
- Apr 23Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 210 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 31 | Apr 17 | May 2 |
| 32°F | Mar 16 | Apr 4 | Apr 23 |
| 28°F | Mar 1 | Mar 21 | Apr 10 |
| 24°F | Feb 17 | Mar 9 | Mar 30 |
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 7 | Oct 23 | Nov 4 |
| 32°F | Oct 16 | Oct 31 | Nov 14 |
| 28°F | Oct 22 | Nov 8 | Nov 27 |
| 24°F | Nov 1 | Nov 18 | Dec 9 |
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 | 169 days | 189 days | 211 days |
| 32°F | 186 days | 210 days | 233 days |
| 28°F | 206 days | 232 days | 259 days |
| 24°F | 227 days | 256 days | 284 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 |
|---|---|---|---|
| 73082 | 7b | 5 to 10°F | 12 km |
| 73541 | 7b | 5 to 10°F | 15 km |
| 73017 | 7b | 5 to 10°F | 15 km |
| 73567 | 7b | 5 to 10°F | 15 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 USC00340010, at 34.8083, -98.0233, elevation 397 m (1,302 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 76.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Chickasha 2sse Mesonet (27 km)
- Apache 4ene Mesonet (27 km)
- Chickasha Exp. Station (28 km)
- Anadarko 3 E (32 km)
- Duncan (35 km)
- Lindsay 2 W (35 km)
- Velma 7nw Mesonet (39 km)
- Lawton (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.