Frost dates for Rohwer 2 NNE, AR
At Rohwer 2 NNE, the median last spring frost (32°F) is Mar 12 and the median first fall frost is Nov 14, for a typical growing season of 247 days. For a 90% chance that the last frost has passed, wait until Mar 31. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 12Last spring frost (median)50% chance of 32°F after this date
- Mar 31Safer planting date10% chance of 32°F after this date
- Nov 14First fall frost (median)50% chance of 32°F by this date
- 247 daysGrowing season (median)between 32°F freezes
USDA hardiness zone 8b (15 to 20°F) · see all zone 8b frost dates
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 6 | Mar 26 | Apr 9 |
| 32°F | Feb 21 | Mar 12 | Mar 31 |
| 28°F | Feb 2 | Feb 28 | Mar 18 |
| 24°F | Jan 13 | Feb 11 | Mar 9 |
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 18 | Nov 1 | Nov 19 |
| 32°F | Oct 29 | Nov 14 | Dec 3 |
| 28°F | Nov 6 | Nov 28 | Dec 22 |
| 24°F | Nov 18 | Dec 15 | Jan 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 | 200 days | 222 days | 246 days |
| 32°F | 222 days | 247 days | 275 days |
| 28°F | 245 days | 277 days | 306 days |
| 24°F | 275 days | 307 days | 343 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 99% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 71666 | 8b | 15 to 20°F | 7 km |
| 71674 | 8b | 15 to 20°F | 9 km |
| 71670 | 8b | 15 to 20°F | 13 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 USC00036253, at 33.8103, -91.2778, elevation 46 m (150 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 47.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Arkansas Post (25 km)
- Dumas (25 km)
- Dermott 3 NE (30 km)
- Cane Creek State Park (47 km)
- Monticello Muni Airport (48 km)
- Saint Charles (64 km)
- Portland (66 km)
- Pine Bluff Grider Field (73 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.