Frost dates for Keiser, AR
At Keiser, the median last spring frost (32°F) is Mar 23 and the median first fall frost is Nov 6, for a typical growing season of 229 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 6First 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 17 | Apr 3 | Apr 19 |
| 32°F | Mar 4 | Mar 23 | Apr 8 |
| 28°F | Feb 20 | Mar 8 | Mar 29 |
| 24°F | Feb 5 | Feb 28 | 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 12 | Oct 28 | Nov 10 |
| 32°F | Oct 23 | Nov 6 | Nov 27 |
| 28°F | Nov 2 | Nov 22 | Dec 14 |
| 24°F | Nov 13 | Dec 7 | Jan 3 |
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 | 187 days | 208 days | 229 days |
| 32°F | 206 days | 229 days | 254 days |
| 28°F | 227 days | 256 days | 284 days |
| 24°F | 254 days | 284 days | 315 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 |
|---|---|---|---|
| 72351 | 8a | 10 to 15°F | 1 km |
| 72370 | 8a | 10 to 15°F | 4 km |
| 72428 | 8a | 10 to 15°F | 12 km |
| 72395 | 8a | 10 to 15°F | 12 km |
| 72329 | 8a | 10 to 15°F | 13 km |
| 72330 | 8a | 10 to 15°F | 14 km |
| 72391 | 8a | 10 to 15°F | 16 km |
| 72442 | 8a | 10 to 15°F | 17 km |
| 72313 | 8a | 10 to 15°F | 18 km |
| 72354 | 8a | 10 to 15°F | 20 km |
| 72350 | 8a | 10 to 15°F | 21 km |
| 72377 | 8a | 10 to 15°F | 22 km |
| 72419 | 8a | 10 to 15°F | 24 km |
| 72338 | 8a | 10 to 15°F | 29 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 USC00033821, at 35.6872, -90.0964, elevation 71 m (232 ft).
- Data quality: Standard (24+ years of data), 28 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
- Blytheville (32 km)
- Blytheville Muni Airport (37 km)
- Jonesboro Muni Airport (52 km)
- Paragould 1s (53 km)
- Jonesboro 2 NE (54 km)
- Poinsett State Park (56 km)
- West Memphis Muni Airport (63 km)
- W Memphis (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.