Frost dates for 77304 — Conroe, TX
Last spring frostFeb 24median date
First fall frostDec 2median date
Growing season281 daysfrost-free
Hardiness zone9aZone 9a
How Conroe compares
- In 8 years out of 10, the last spring frost in Conroe falls between January 26 and March 17, a 50-day window. The first fall frost falls between November 11 and January 2.
- The median last frost is 19 days earlier than the Texas median of Mar 15.
- Its 281-day growing season is longer than 88% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is 7 days earlier than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 17 nights a year at or below 32°F.
- Compared with Cypress, TX, 45 km away, the last frost here is 5 days later than there and the growing season is 6 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 26 |
| 50% (median) | February 24 |
| 10% (safe for tender plants) | March 17 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 11 |
| 50% (median) | December 2 |
| 90% (late) | January 2 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Conroe, TX
Frost dates for 77304 — Conroe, TX — last frost Feb 24, first frost Dec 2, zone 9a. whenisthelastfrost.com
Crop
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Start indoors: Dec 2 to Dec 16Transplant outside: Jan 27 to Feb 10
Start indoors: Dec 16 to Dec 30Transplant outside: Mar 10 to Mar 24
Start indoors: Dec 16 to Dec 30Transplant outside: Mar 10 to Mar 24
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Mar 3 to Mar 17
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Feb 3 to Feb 17Sow outdoors: Jan 27 to Mar 3Plant for fall: Oct 7 to Nov 4
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Jan 27 to Feb 10Sow outdoors: Jan 27 to Feb 10Plant for fall: Sep 23 to Oct 14
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Feb 10 to Feb 24Plant for fall: Aug 26 to Sep 16
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Feb 3 to Feb 17Plant for fall: Aug 26 to Sep 16
Start indoors: Dec 30 to Jan 13Start indoors: Dec 30 to Jan 13Transplant outside: Feb 10 to Feb 24Plant for fall: Aug 26 to Sep 16
Start indoors: Jan 13 to Jan 27Transplant outside: Mar 17 to Mar 31Sow outdoors: Mar 17 to Mar 31
Start indoors: Jan 13 to Jan 27Transplant outside: Mar 3 to Mar 17
Sow outdoors: Jan 13 to Feb 3Plant for fall: Sep 9 to Sep 30
Sow outdoors: Jan 13 to Feb 3Plant for fall: Oct 7 to Oct 28
Sow outdoors: Jan 20 to Mar 3Plant for fall: Oct 21 to Nov 11
Start indoors: Jan 27 to Feb 3Transplant outside: Mar 10 to Mar 17Sow outdoors: Mar 3 to Mar 17Plant for fall: Sep 16 to Sep 30
Start indoors: Jan 27 to Feb 3Sow outdoors: Mar 3 to Mar 17Plant for fall: Sep 23 to Oct 7
Start indoors: Jan 27 to Feb 3Sow outdoors: Mar 3 to Mar 17
Start indoors: Jan 27 to Feb 3Transplant outside: Mar 10 to Mar 24
Sow outdoors: Feb 3 to Mar 3Plant for fall: Sep 9 to Sep 23
Sow outdoors: Feb 3 to Mar 3Plant for fall: Sep 23 to Oct 7
Sow outdoors: Feb 3 to Feb 24
Sow outdoors: Feb 10 to Mar 10Plant for fall: Sep 23 to Oct 7
Sow outdoors: Feb 10 to Mar 3Plant for fall: Oct 7 to Oct 28
Sow outdoors: Mar 3 to Mar 24Plant for fall: Sep 16 to Sep 30
Sow outdoors: Mar 3 to Mar 17
Transplant outside: Mar 10 to Mar 31
Plant for fall: Nov 18 to Dec 23
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Conroe, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 2 – Dec 16 | Jan 27 – Feb 10 | — | — |
| Peppers | Dec 16 – Dec 30 | Mar 10 – Mar 24 | — | — |
| Eggplant | Dec 16 – Dec 30 | Mar 10 – Mar 24 | — | — |
| Tomatoes | Dec 30 – Jan 13 | Mar 3 – Mar 17 | — | — |
| Lettuce | Dec 30 – Jan 13 | Feb 3 – Feb 17 | Jan 27 – Mar 3 | Oct 7 – Nov 4 |
| Kale | Dec 30 – Jan 13 | Jan 27 – Feb 10 | Jan 27 – Feb 10 | Sep 23 – Oct 14 |
| Broccoli | Dec 30 – Jan 13 | Feb 10 – Feb 24 | — | Aug 26 – Sep 16 |
| Cabbage | Dec 30 – Jan 13 | Feb 3 – Feb 17 | — | Aug 26 – Sep 16 |
| Cauliflower | Dec 30 – Jan 13 | Feb 10 – Feb 24 | — | Aug 26 – Sep 16 |
| Okra | Jan 13 – Jan 27 | Mar 17 – Mar 31 | Mar 17 – Mar 31 | — |
| Basil | Jan 13 – Jan 27 | Mar 3 – Mar 17 | — | — |
| Peas | — | — | Jan 13 – Feb 3 | Sep 9 – Sep 30 |
| Spinach | — | — | Jan 13 – Feb 3 | Oct 7 – Oct 28 |
| Radishes | — | — | Jan 20 – Mar 3 | Oct 21 – Nov 11 |
| Cucumbers | Jan 27 – Feb 3 | Mar 10 – Mar 17 | Mar 3 – Mar 17 | Sep 16 – Sep 30 |
| Zucchini & Summer Squash | Jan 27 – Feb 3 | — | Mar 3 – Mar 17 | Sep 23 – Oct 7 |
| Winter Squash & Pumpkins | Jan 27 – Feb 3 | — | Mar 3 – Mar 17 | — |
| Melons & Watermelon | Jan 27 – Feb 3 | Mar 10 – Mar 24 | — | — |
| Carrots | — | — | Feb 3 – Mar 3 | Sep 9 – Sep 23 |
| Beets | — | — | Feb 3 – Mar 3 | Sep 23 – Oct 7 |
| Potatoes | — | — | Feb 3 – Feb 24 | — |
| Swiss Chard | — | — | Feb 10 – Mar 10 | Sep 23 – Oct 7 |
| Cilantro | — | — | Feb 10 – Mar 3 | Oct 7 – Oct 28 |
| Green Beans | — | — | Mar 3 – Mar 24 | Sep 16 – Sep 30 |
| Sweet Corn | — | — | Mar 3 – Mar 17 | — |
| Sweet Potatoes | — | Mar 10 – Mar 31 | — | — |
| Garlic | — | — | — | Nov 18 – Dec 23 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Conroe, TX weather station, 4 km away (elevation 246 ft (75 m)).
ZIP codes in Conroe: 77301 77302 77303 77304 77305 77306 77384 77385
Frost dates near Conroe
- Willis Mar 11 · Nov 19
- Montgomery Feb 24 · Dec 2
- Magnolia Feb 19 · Dec 3
- Spring Feb 19 · Dec 3
- Hufsmith Feb 19 · Dec 3
- Pinehurst Feb 19 · Dec 3
- Dobbin Feb 24 · Dec 2
- New Waverly Mar 11 · Nov 19
Frequently asked questions
When is the last frost in Conroe, TX?
The median last spring frost in Conroe, TX is February 24. There is still about a 10% chance of frost after March 17, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Conroe, TX?
The median first fall frost is December 2, with about a 10% chance of frost before November 11.
How long is the growing season in Conroe, TX?
About 281 days between the median last spring frost and first fall frost.
What planting zone is Conroe, TX?
Conroe, TX is in USDA hardiness zone 9a.