Frost dates for Wynne, AR
At Wynne, the median last spring frost (32°F) is Mar 23 and the median first fall frost is Nov 7, for a typical growing season of 231 days. For a 90% chance that the last frost has passed, wait until Apr 8. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 23Last spring frost (median)50% chance of 32°F after this date
- Apr 8Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 231 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 17 | Apr 4 | Apr 18 |
| 32°F | Mar 3 | Mar 23 | Apr 8 |
| 28°F | Feb 19 | Mar 9 | Mar 28 |
| 24°F | Jan 31 | Feb 26 | Mar 17 |
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 15 | Oct 28 | Nov 12 |
| 32°F | Oct 24 | Nov 7 | Nov 27 |
| 28°F | Nov 2 | Nov 20 | Dec 12 |
| 24°F | Nov 10 | Dec 5 | Jan 4 |
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 | 189 days | 209 days | 231 days |
| 32°F | 206 days | 231 days | 256 days |
| 28°F | 229 days | 255 days | 285 days |
| 24°F | 253 days | 284 days | 319 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 |
|---|---|---|---|
| 72396 | 8a | 10 to 15°F | 4 km |
| 72387 | 8a | 10 to 15°F | 7 km |
| 72324 | 8a | 10 to 15°F | 15 km |
| 72373 | 8a | 10 to 15°F | 18 km |
| 72326 | 8a | 10 to 15°F | 18 km |
| 72322 | 8a | 10 to 15°F | 21 km |
| 72359 | 8a | 10 to 15°F | 27 km |
| 72394 | 8a | 10 to 15°F | 28 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 USC00038052, at 35.2547, -90.7964, elevation 79 m (260 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 60.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Poinsett State Park (32 km)
- Beedeville 4 NE (33 km)
- West Memphis Muni Airport (53 km)
- Brinkley (56 km)
- Marianna 2 S (57 km)
- W Memphis (58 km)
- Newport (58 km)
- Jonesboro Muni Airport (66 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.