Frost dates for Greenbrier, AR
At Greenbrier, the median last spring frost (32°F) is Apr 9 and the median first fall frost is Oct 25, for a typical growing season of 198 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zones 7b to 8a.
- Apr 9Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 198 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 | Apr 8 | Apr 20 | May 2 |
| 32°F | Mar 23 | Apr 9 | Apr 24 |
| 28°F | Mar 6 | Mar 29 | Apr 13 |
| 24°F | Feb 23 | Mar 11 | Apr 1 |
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 3 | Oct 15 | Oct 29 |
| 32°F | Oct 11 | Oct 25 | Nov 8 |
| 28°F | Oct 21 | Nov 5 | Nov 22 |
| 24°F | Nov 1 | Nov 16 | Dec 5 |
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 | 160 days | 178 days | 196 days |
| 32°F | 178 days | 198 days | 220 days |
| 28°F | 198 days | 222 days | 247 days |
| 24°F | 222 days | 248 days | 275 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 |
|---|---|---|---|
| 72058 | 8a | 10 to 15°F | 1 km |
| 72061 | 8a | 10 to 15°F | 11 km |
| 72039 | 8a | 10 to 15°F | 13 km |
| 72047 | 8a | 10 to 15°F | 14 km |
| 72157 | 8a | 10 to 15°F | 19 km |
| 72173 | 8a | 10 to 15°F | 21 km |
| 72111 | 8a | 10 to 15°F | 21 km |
| 72013 | 7b | 5 to 10°F | 24 km |
| 72027 | 7b | 5 to 10°F | 24 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 USC00032962, at 35.2414, -92.3636, elevation 103 m (338 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 88.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Conway (19 km)
- Morrilton (38 km)
- Marche (40 km)
- Cabot (43 km)
- Greers Ferry Dam (45 km)
- Little Rock (46 km)
- Little Rock Airport Adams Field (58 km)
- Searcy (59 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.