Last frost date in Conroe, TX
Expect the last frost in Conroe around February 24. Frost after March 17 happens in only one year out of ten. The first fall frost usually arrives about December 2, which leaves 285 frost-free days. An early freeze before November 11 happens one year in ten.
- Safe after (10% risk)
- Mar 17
- Average first frost
- Dec 2
- Frost-free season
- 285 days
- Hard freeze (28°F) ends
- Feb 2
No frost in the next 7 nights
National Weather Service forecast, updated Oct 22, 12:57 UTC
- ThuOct 2250°
- FriOct 2354°
- SatOct 2458°
- SunOct 2558°
- MonOct 2659°
- TueOct 2758°
- WedOct 2858°
Planting calendar for Conroe
Windows count forward or back from the average frost dates above. Click a crop for dates across Texas.
TomatoesMar 3–Mar 17
PumpkinsMar 10–Mar 24
SunflowersFeb 24–Mar 17
CucumbersMar 10–Mar 17
CornMar 3–Mar 17
Sweet potatoesMar 17–Mar 31
WatermelonMar 10–Mar 24
Green beansMar 3–Mar 24
ZucchiniMar 3–Mar 17
OkraMar 17–Mar 31
PeppersMar 10–Mar 24
BasilMar 3–Mar 17
Butternut squashMar 3–Mar 17
CantaloupeMar 10–Mar 24
EggplantMar 10–Mar 24
PotatoesJan 27–Feb 10
OnionsJan 13–Feb 3
CarrotsFeb 3–Mar 10
LettuceFeb 10–Mar 3
BroccoliJan 27–Feb 10
BeetsJan 27–Mar 10
PeasJan 13–Jan 27
CabbageJan 27–Feb 10
RadishesJan 20–Mar 3
Brussels sproutsFeb 10–Feb 24
SpinachJan 13–Feb 3
CilantroFeb 10–Mar 3
KaleJan 27–Feb 10
Collard greensJan 27–Feb 10
TurnipsJan 27–Feb 10
DillFeb 24–Mar 10
CeleryMar 3–Mar 10
CauliflowerFeb 10–Feb 24
LeeksFeb 10–Feb 24
Swiss chardFeb 10–Mar 10
ParsleyFeb 10–Mar 3
Tulip bulbsDec 15–Jan 15
GarlicOct 15–Nov 30
Daffodil bulbsOct 15–Nov 30
StrawberriesJan 27–Feb 10
AsparagusJan 27–Feb 10Frost probabilities
| Threshold | Spring, 90% chance later | Spring, 50% | Spring, 10% | Fall, 10% chance earlier | Fall, 50% | Fall, 90% |
|---|---|---|---|---|---|---|
| Light frost, 32°F | Jan 26 | Feb 24 | Mar 17 | Nov 11 | Dec 2 | Jan 2 |
| Hard freeze, 28°F | Dec 31 | Feb 2 | Mar 6 | Nov 24 | Dec 23 | Jan 28 |
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 Conroe (USC00411956) sits 0.1 miles from the center of Conroe at 245 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 Conroe, TX?
The average last frost date in Conroe is February 24, based on NOAA 1991–2020 climate normals. There is a 10% chance of frost after March 17.
When is the first frost in Conroe?
The first frost in fall usually comes around December 2. One year in ten it arrives before November 11.
How long is the growing season in Conroe?
About 285 days between the average last and first frost.
When should I plant tomatoes in Conroe?
Plant tomato seedlings outside from March 3 to March 17. Start seeds indoors six to eight weeks earlier.
Nearby in Texas
- The WoodlandsFeb 19
- SpringFeb 13
- HuntsvilleMar 1
- AtascocitaFeb 13
- HoustonFeb 2
- CloverleafFeb 2
- KatyFeb 2
- ChannelviewFeb 2
- Mission BendFeb 2
- Deer ParkFeb 2
- BaytownFeb 20
- FulshearFeb 9