Last frost date in Prosper, TX
The average last frost in Prosper is March 17. By April 5 the chance of another 32°F night drops to 1 in 10. The first fall frost usually arrives about November 15, which leaves 241 frost-free days. An early freeze before October 27 happens one year in ten.
- Safe after (10% risk)
- Apr 5
- Average first frost
- Nov 15
- Frost-free season
- 241 days
- Hard freeze (28°F) ends
- Mar 4
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2257°
- FriOct 2360°
- SatOct 2462°
- SunOct 2558°
- MonOct 2659°
- TueOct 2757°
- WedOct 2858°
Planting calendar for Prosper
Windows count forward or back from the average frost dates above. Click a crop for dates across Texas.
TomatoesMar 24–Apr 7
PumpkinsMar 31–Apr 14
SunflowersMar 17–Apr 7
CucumbersMar 31–Apr 7
CornMar 24–Apr 7
Sweet potatoesApr 7–Apr 21
WatermelonMar 31–Apr 14
Green beansMar 24–Apr 14
ZucchiniMar 24–Apr 7
OkraApr 7–Apr 21
PeppersMar 31–Apr 14
BasilMar 24–Apr 7
Butternut squashMar 24–Apr 7
CantaloupeMar 31–Apr 14
EggplantMar 31–Apr 14
PotatoesFeb 17–Mar 3
OnionsFeb 3–Feb 24
CarrotsFeb 24–Mar 31
LettuceMar 3–Mar 24
BroccoliFeb 17–Mar 3
BeetsFeb 17–Mar 31
PeasFeb 3–Feb 17
CabbageFeb 17–Mar 3
RadishesFeb 10–Mar 24
Brussels sproutsMar 3–Mar 17
SpinachFeb 3–Feb 24
CilantroMar 3–Mar 24
KaleFeb 17–Mar 3
Collard greensFeb 17–Mar 3
TurnipsFeb 17–Mar 3
DillMar 17–Mar 31
CeleryMar 24–Mar 31
CauliflowerMar 3–Mar 17
LeeksMar 3–Mar 17
Swiss chardMar 3–Mar 31
ParsleyMar 3–Mar 24
Tulip bulbsNov 1–Dec 6
GarlicOct 25–Nov 29
Daffodil bulbsOct 18–Nov 29
StrawberriesFeb 17–Mar 3
AsparagusFeb 17–Mar 3Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Feb 27 | Mar 17 | Apr 5 | Oct 27 | Nov 15 | Dec 5 |
| Hard freeze, 28°F | Feb 15 | Mar 4 | Mar 24 | Nov 6 | Nov 30 | Dec 23 |
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 Mckinney Municipal Airport (USC00415766) sits 13.0 miles from the center of Prosper at 586 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 Prosper, TX?
The average last frost date in Prosper is March 17, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after April 5.
When is the first frost in Prosper?
The first frost in fall usually comes around November 15. One year in ten it arrives before October 27.
How long is the growing season in Prosper?
About 241 days between the average last and first frost.
When should I plant tomatoes in Prosper?
Plant tomato seedlings outside from March 24 to April 7. Start seeds indoors six to eight weeks earlier.
Nearby in Texas
- CelinaMar 24
- FriscoMar 7
- Little ElmMar 13
- McKinneyMar 17
- The ColonyMar 7
- AllenMar 18
- PlanoMar 7
- MelissaMar 17
- LewisvilleMar 14
- AnnaMar 17
- CorinthMar 13
- PrincetonMar 18