Frost dates for Portageville, MO
At Portageville, the median last spring frost (32°F) is Mar 25 and the median first fall frost is Nov 7, for a typical growing season of 227 days. For a 90% chance that the last frost has passed, wait until Apr 9. Nearby ZIP codes are in USDA hardiness zone 7b.
- Mar 25Last spring frost (median)50% chance of 32°F after this date
- Apr 9Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 227 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 19 | Apr 4 | Apr 20 |
| 32°F | Mar 7 | Mar 25 | Apr 9 |
| 28°F | Feb 23 | Mar 13 | Mar 31 |
| 24°F | Feb 9 | Mar 2 | Mar 20 |
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 14 | Oct 27 | Nov 10 |
| 32°F | Oct 24 | Nov 7 | Nov 27 |
| 28°F | Nov 4 | Nov 20 | Dec 8 |
| 24°F | Nov 13 | Dec 3 | Dec 24 |
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 | 206 days | 228 days |
| 32°F | 207 days | 227 days | 252 days |
| 28°F | 227 days | 252 days | 279 days |
| 24°F | 251 days | 277 days | 306 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 |
|---|---|---|---|
| 63873 | 7b | 5 to 10°F | 4 km |
| 63879 | 7b | 5 to 10°F | 12 km |
| 63878 | 7b | 5 to 10°F | 15 km |
| 63848 | 7b | 5 to 10°F | 17 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 USC00236804, at 36.4136, -89.6997, elevation 85 m (280 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 71.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- New Madrid (24 km)
- Caruthersville (25 km)
- Malden Muni Airport (33 km)
- Kennett Radio Kboa (40 km)
- Sikeston Power Station (52 km)
- Poplar Bluff Muni Airport (69 km)
- Poplar Bluff (74 km)
- Wappapello Dam (77 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.