Frost dates for Benton, AR
At Benton, the median last spring frost (32°F) is Mar 24 and the median first fall frost is Nov 7, for a typical growing season of 229 days. For a 90% chance that the last frost has passed, wait until Apr 13. Nearby ZIP codes are in USDA hardiness zone 8a.
- Mar 24Last spring frost (median)50% chance of 32°F after this date
- Apr 13Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 229 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 3 | Mar 24 | Apr 13 |
| 28°F | Feb 19 | Mar 9 | Mar 29 |
| 24°F | Jan 30 | Feb 26 | Mar 15 |
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 30 | Nov 12 |
| 32°F | Oct 26 | Nov 7 | Nov 23 |
| 28°F | Nov 1 | Nov 18 | Dec 5 |
| 24°F | Nov 9 | Dec 1 | Dec 29 |
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 | 180 days | 205 days | 227 days |
| 32°F | 203 days | 229 days | 254 days |
| 28°F | 227 days | 254 days | 282 days |
| 24°F | 249 days | 281 days | 313 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 |
|---|---|---|---|
| 72015 | 8a | 10 to 15°F | 9 km |
| 72022 | 8a | 10 to 15°F | 11 km |
| 72019 | 8a | 10 to 15°F | 12 km |
| 72002 | 8a | 10 to 15°F | 12 km |
| 72011 | 8a | 10 to 15°F | 14 km |
| 72167 | 8a | 10 to 15°F | 16 km |
| 72210 | 8a | 10 to 15°F | 18 km |
| 72087 | 8a | 10 to 15°F | 21 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 USC00030582, at 34.5675, -92.6006, elevation 94 m (310 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 64.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Malvern (29 km)
- Alum Fk (34 km)
- Sheridan (35 km)
- Little Rock Airport Adams Field (38 km)
- Hot Springs 1 NNE (41 km)
- Marche (42 km)
- Little Rock (43 km)
- Leola (44 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.