Frost dates for West Memphis Muni Airport, AR
At West Memphis Muni Airport, the median last spring frost (32°F) is Mar 16 and the median first fall frost is Nov 11, for a typical growing season of 242 days. For a 90% chance that the last frost has passed, wait until Apr 3. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 16Last spring frost (median)50% chance of 32°F after this date
- Apr 3Safer planting date10% chance of 32°F after this date
- Nov 11First fall frost (median)50% chance of 32°F by this date
- 242 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 9 | Mar 29 | Apr 13 |
| 32°F | Feb 28 | Mar 16 | Apr 3 |
| 28°F | Feb 10 | Mar 2 | Mar 22 |
| 24°F | Jan 22 | Feb 18 | Mar 11 |
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 20 | Nov 1 | Nov 16 |
| 32°F | Oct 30 | Nov 11 | Dec 1 |
| 28°F | Nov 7 | Nov 24 | Dec 17 |
| 24°F | Nov 18 | Dec 12 | Jan 8 |
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 | 198 days | 217 days | 240 days |
| 32°F | 217 days | 242 days | 265 days |
| 28°F | 240 days | 267 days | 298 days |
| 24°F | 262 days | 299 days | 332 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 |
|---|---|---|---|
| 72332 | 8a | 10 to 15°F | 7 km |
| 72376 | 8a | 10 to 15°F | 8 km |
| 72364 | 8a | 10 to 15°F | 10 km |
| 72327 | 8a | 10 to 15°F | 15 km |
| 72325 | 8a | 10 to 15°F | 22 km |
| 72346 | 8a | 10 to 15°F | 23 km |
| 72331 | 8a | 10 to 15°F | 27 km |
| 72384 | 8a | 10 to 15°F | 27 km |
| 72339 | 8a | 10 to 15°F | 31 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 USW00053959, at 35.1350, -90.2344, elevation 65 m (214 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 58.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- W Memphis (5 km)
- Wynne (53 km)
- Poinsett State Park (60 km)
- Keiser (63 km)
- Marianna 2 S (65 km)
- Helena (76 km)
- Beedeville 4 NE (83 km)
- Jonesboro Muni Airport (86 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.