Last frost date in Portland, Tennessee
April 5
Average last frost in spring. In an early year (1 in 10) it's over by March 21; in a late year (1 in 10) it comes after April 19.
November 1
Average first frost in fall. 1 year in 10 it comes by October 21.
Source: NOAA U.S. Climate Normals 1991–2020, station Portland Sewage Plt (USC00407359), 0.7 miles from Portland, elevation 794 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 21 | Apr 5 | Apr 19 |
| First frost in fall | Oct 21 | Nov 1 | Nov 14 |
Frost-free days in an average year: 210
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 16 | Oct 23 |
| Frost (32°F) | Every year | Apr 5 | Nov 1 |
| Hard freeze (28°F) | Every year | Mar 26 | Nov 11 |
Nights at 32°F or colder in an average year: 80
What to plant now in Portland
- Corn saladSept 15 – Nov 1Now
- Upland cressSept 15 – Nov 1Now
- Rhubarb plantsNov 1 – Dec 1Soon
- Asparagus plantsNov 15 – Jan 1Soon
- Spring planting calendar for an average last frost around April 10 Portland: April 5
- Fall planting calendar for an average first frost around October 30 Portland: November 1
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Tennessee
- White House 12 mi · last frost Apr 7
- Gallatin 15 mi · last frost Apr 16
- Hendersonville 20 mi · last frost Apr 11
- Springfield 20 mi · last frost Apr 9
- Hartsville/Trousdale County 25 mi · last frost Apr 12