Last frost date in Duncanville, TX
In Duncanville, the last spring frost comes around March 20 in an average year. Wait until April 8 if you want 90% odds of no more frost. The first fall frost usually arrives about November 13, which leaves 236 frost-free days. An early freeze before October 27 happens one year in ten.
- Safe after (10% risk)
- Apr 8
- Average first frost
- Nov 13
- Frost-free season
- 236 days
- Hard freeze (28°F) ends
- Mar 8
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2257°
- FriOct 2358°
- SatOct 2460°
- SunOct 2557°
- MonOct 2659°
- TueOct 2756°
- WedOct 2857°
Planting calendar for Duncanville
Windows count forward or back from the average frost dates above. Click a crop for dates across Texas.
TomatoesMar 27–Apr 10
PumpkinsApr 3–Apr 17
SunflowersMar 20–Apr 10
CucumbersApr 3–Apr 10
CornMar 27–Apr 10
Sweet potatoesApr 10–Apr 24
WatermelonApr 3–Apr 17
Green beansMar 27–Apr 17
ZucchiniMar 27–Apr 10
OkraApr 10–Apr 24
PeppersApr 3–Apr 17
BasilMar 27–Apr 10
Butternut squashMar 27–Apr 10
CantaloupeApr 3–Apr 17
EggplantApr 3–Apr 17
PotatoesFeb 20–Mar 6
OnionsFeb 6–Feb 27
CarrotsFeb 27–Apr 3
LettuceMar 6–Mar 27
BroccoliFeb 20–Mar 6
BeetsFeb 20–Apr 3
PeasFeb 6–Feb 20
CabbageFeb 20–Mar 6
RadishesFeb 13–Mar 27
Brussels sproutsMar 6–Mar 20
SpinachFeb 6–Feb 27
CilantroMar 6–Mar 27
KaleFeb 20–Mar 6
Collard greensFeb 20–Mar 6
TurnipsFeb 20–Mar 6
DillMar 20–Apr 3
CeleryMar 27–Apr 3
CauliflowerMar 6–Mar 20
LeeksMar 6–Mar 20
Swiss chardMar 6–Apr 3
ParsleyMar 6–Mar 27
Tulip bulbsOct 30–Dec 4
GarlicOct 23–Nov 27
Daffodil bulbsOct 16–Nov 27
StrawberriesFeb 20–Mar 6
AsparagusFeb 20–Mar 6Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Feb 28 | Mar 20 | Apr 8 | Oct 27 | Nov 13 | Dec 3 |
| Hard freeze, 28°F | Feb 17 | Mar 8 | Mar 25 | Nov 3 | Nov 25 | Dec 13 |
Read the spring 10% column as the date after which only one year in ten still gets frost. That is the safer date for tomatoes, peppers and basil.
Where these numbers come from
NOAA station Joe Pool Lake (USC00414597) sits 3.6 miles from the center of Duncanville at 591 feet. Its averages cover 1991 to 2020. Low spots, valleys and open fields can keep getting frost a week or two after the station stops; city centers and lakeshores usually get less of it.
Questions
When is the last frost in Duncanville, TX?
The average last frost date in Duncanville is March 20, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 8.
When is the first frost in Duncanville?
The first frost in fall usually comes around November 13. One year in ten it arrives before October 27.
How long is the growing season in Duncanville?
About 236 days between the average last and first frost.
When should I plant tomatoes in Duncanville?
Plant tomato seedlings outside from March 27 to April 10. Start seeds indoors six to eight weeks earlier.
Nearby in Texas
- DeSotoMar 6
- Cedar HillMar 20
- Grand PrairieMar 20
- Glenn HeightsMar 16
- LancasterMar 12
- Red OakMar 16
- ArlingtonMar 9
- MidlothianMar 16
- MansfieldMar 9
- DallasMar 2
- IrvingMar 8
- University ParkMar 2