Frost dates for Mountain Home Baxter Airport, AR
At Mountain Home Baxter Airport, the median last spring frost (32°F) is Apr 2 and the median first fall frost is Nov 1, for a typical growing season of 212 days. For a 90% chance that the last frost has passed, wait until Apr 19. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Apr 2Last spring frost (median)50% chance of 32°F after this date
- Apr 19Safer planting date10% chance of 32°F after this date
- Nov 1First fall frost (median)50% chance of 32°F by this date
- 212 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 30 | Apr 15 | May 2 |
| 32°F | Mar 14 | Apr 2 | Apr 19 |
| 28°F | Mar 2 | Mar 20 | Apr 7 |
| 24°F | Feb 18 | Mar 8 | Mar 26 |
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 9 | Oct 22 | Nov 3 |
| 32°F | Oct 19 | Nov 1 | Nov 16 |
| 28°F | Oct 30 | Nov 11 | Nov 30 |
| 24°F | Nov 5 | Nov 23 | Dec 12 |
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 | 210 days |
| 32°F | 192 days | 212 days | 235 days |
| 28°F | 212 days | 235 days | 261 days |
| 24°F | 233 days | 258 days | 286 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 |
|---|---|---|---|
| 72651 | 7b | 5 to 10°F | 2 km |
| 72635 | 7b | 5 to 10°F | 6 km |
| 72642 | 7b | 5 to 10°F | 7 km |
| 72626 | 7a | 0 to 5°F | 9 km |
| 72619 | 7b | 5 to 10°F | 11 km |
| 72661 | 7a | 0 to 5°F | 13 km |
| 72634 | 7a | 0 to 5°F | 17 km |
| 72687 | 7b | 5 to 10°F | 19 km |
| 65729 | 7a | 0 to 5°F | 21 km |
| 72677 | 7b | 5 to 10°F | 24 km |
| 65676 | 7a | 0 to 5°F | 26 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 USW00053918, at 36.3689, -92.4703, elevation 283 m (928 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 73.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mountain Home 1 NNW (7 km)
- Calico Rock 2 WSW (40 km)
- Lead Hill (40 km)
- Gilbert (48 km)
- Marshall (54 km)
- Salem (60 km)
- Harrison (60 km)
- Harrison Boone Co Airport (63 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.