Frost dates for Poplar Bluff, MO
At Poplar Bluff, the median last spring frost (32°F) is Mar 29 and the median first fall frost is Nov 5, for a typical growing season of 222 days. For a 90% chance that the last frost has passed, wait until Apr 12. Nearby ZIP codes are in USDA hardiness zones 7a to 7b.
- Mar 29Last spring frost (median)50% chance of 32°F after this date
- Apr 12Safer planting date10% chance of 32°F after this date
- Nov 5First fall frost (median)50% chance of 32°F by this date
- 222 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 23 | Apr 9 | Apr 25 |
| 32°F | Mar 10 | Mar 29 | Apr 12 |
| 28°F | Feb 28 | Mar 16 | Apr 1 |
| 24°F | Feb 15 | Mar 4 | Mar 22 |
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 13 | Oct 26 | Nov 6 |
| 32°F | Oct 22 | Nov 5 | Nov 21 |
| 28°F | Nov 1 | Nov 15 | Dec 4 |
| 24°F | Nov 9 | Nov 27 | Dec 17 |
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 | 178 days | 200 days | 219 days |
| 32°F | 201 days | 222 days | 244 days |
| 28°F | 221 days | 244 days | 269 days |
| 24°F | 243 days | 267 days | 293 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 |
|---|---|---|---|
| 63901 | 7a | 0 to 5°F | 4 km |
| 63945 | 7b | 5 to 10°F | 18 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 USC00236791, at 36.7578, -90.4056, elevation 113 m (370 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 83.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Poplar Bluff Muni Airport (7 km)
- Wappapello Dam (21 km)
- Doniphan (39 km)
- Malden Muni Airport (41 km)
- Clearwater Dam (53 km)
- Advance 1 S (57 km)
- Kennett Radio Kboa (66 km)
- Sikeston Power Station (71 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.