Flat, TX frost dates
Last spring frostMar 19median date
First fall frostNov 9median date
Growing season235 daysfrost-free
Hardiness zone8bZone 8b
How Flat compares
- In 8 years out of 10, the last spring frost in Flat falls between February 26 and April 7, a 40-day window. The first fall frost falls between October 25 and November 30.
- The median last frost is 4 days later than the Texas median of Mar 15.
- Its 235-day growing season is longer than 31% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is typical for zone 8b, where the median is Mar 16.
- The weather station records an average of 43 nights a year at or below 32°F.
- Compared with Killeen, TX, 27 km away, the last frost here is 5 days later than there and the growing season is 13 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 26 |
| 50% (median) | March 19 |
| 10% (safe for tender plants) | April 7 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 25 |
| 50% (median) | November 9 |
| 90% (late) | November 30 |
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 Flat, TX
Flat, TX frost dates — last frost Mar 19, first frost Nov 9, zone 8b. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 25 to Jan 8Start indoors: Dec 25 to Jan 8Transplant outside: Feb 19 to Mar 5
Start indoors: Jan 8 to Jan 22Transplant outside: Apr 2 to Apr 16
Start indoors: Jan 8 to Jan 22Transplant outside: Apr 2 to Apr 16
Start indoors: Jan 22 to Feb 5Transplant outside: Mar 26 to Apr 9
Start indoors: Jan 22 to Feb 5Transplant outside: Feb 26 to Mar 12Sow outdoors: Feb 19 to Mar 26Plant for fall: Sep 14 to Oct 12
Start indoors: Jan 22 to Feb 5Transplant outside: Feb 19 to Mar 5Sow outdoors: Feb 19 to Mar 5Plant for fall: Aug 31 to Sep 21
Start indoors: Jan 22 to Feb 5Transplant outside: Mar 5 to Mar 19Plant for fall: Aug 3 to Aug 24
Start indoors: Jan 22 to Feb 5Transplant outside: Feb 26 to Mar 12Plant for fall: Aug 3 to Aug 24
Start indoors: Jan 22 to Feb 5Transplant outside: Mar 5 to Mar 19Plant for fall: Aug 3 to Aug 24
Start indoors: Feb 5 to Feb 19Transplant outside: Apr 9 to Apr 23Sow outdoors: Apr 9 to Apr 23
Start indoors: Feb 5 to Feb 19Transplant outside: Mar 26 to Apr 9
Sow outdoors: Feb 5 to Feb 26Plant for fall: Aug 17 to Sep 7
Sow outdoors: Feb 5 to Feb 26Plant for fall: Sep 14 to Oct 5
Sow outdoors: Feb 12 to Mar 26Plant for fall: Sep 28 to Oct 19
Start indoors: Feb 19 to Feb 26Transplant outside: Apr 2 to Apr 9Sow outdoors: Mar 26 to Apr 9Plant for fall: Aug 24 to Sep 7
Start indoors: Feb 19 to Feb 26Sow outdoors: Mar 26 to Apr 9Plant for fall: Aug 31 to Sep 14
Start indoors: Feb 19 to Feb 26Sow outdoors: Mar 26 to Apr 9
Start indoors: Feb 19 to Feb 26Transplant outside: Apr 2 to Apr 16
Sow outdoors: Feb 26 to Mar 26Plant for fall: Aug 17 to Aug 31
Sow outdoors: Feb 26 to Mar 26Plant for fall: Aug 31 to Sep 14
Sow outdoors: Feb 26 to Mar 19
Sow outdoors: Mar 5 to Apr 2Plant for fall: Aug 31 to Sep 14
Sow outdoors: Mar 5 to Mar 26Plant for fall: Sep 14 to Oct 5
Sow outdoors: Mar 26 to Apr 16Plant for fall: Aug 24 to Sep 7
Sow outdoors: Mar 26 to Apr 9
Transplant outside: Apr 2 to Apr 23
Plant for fall: Oct 26 to Nov 30
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Flat, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 25 – Jan 8 | Feb 19 – Mar 5 | — | — |
| Peppers | Jan 8 – Jan 22 | Apr 2 – Apr 16 | — | — |
| Eggplant | Jan 8 – Jan 22 | Apr 2 – Apr 16 | — | — |
| Tomatoes | Jan 22 – Feb 5 | Mar 26 – Apr 9 | — | — |
| Lettuce | Jan 22 – Feb 5 | Feb 26 – Mar 12 | Feb 19 – Mar 26 | Sep 14 – Oct 12 |
| Kale | Jan 22 – Feb 5 | Feb 19 – Mar 5 | Feb 19 – Mar 5 | Aug 31 – Sep 21 |
| Broccoli | Jan 22 – Feb 5 | Mar 5 – Mar 19 | — | Aug 3 – Aug 24 |
| Cabbage | Jan 22 – Feb 5 | Feb 26 – Mar 12 | — | Aug 3 – Aug 24 |
| Cauliflower | Jan 22 – Feb 5 | Mar 5 – Mar 19 | — | Aug 3 – Aug 24 |
| Okra | Feb 5 – Feb 19 | Apr 9 – Apr 23 | Apr 9 – Apr 23 | — |
| Basil | Feb 5 – Feb 19 | Mar 26 – Apr 9 | — | — |
| Peas | — | — | Feb 5 – Feb 26 | Aug 17 – Sep 7 |
| Spinach | — | — | Feb 5 – Feb 26 | Sep 14 – Oct 5 |
| Radishes | — | — | Feb 12 – Mar 26 | Sep 28 – Oct 19 |
| Cucumbers | Feb 19 – Feb 26 | Apr 2 – Apr 9 | Mar 26 – Apr 9 | Aug 24 – Sep 7 |
| Zucchini & Summer Squash | Feb 19 – Feb 26 | — | Mar 26 – Apr 9 | Aug 31 – Sep 14 |
| Winter Squash & Pumpkins | Feb 19 – Feb 26 | — | Mar 26 – Apr 9 | — |
| Melons & Watermelon | Feb 19 – Feb 26 | Apr 2 – Apr 16 | — | — |
| Carrots | — | — | Feb 26 – Mar 26 | Aug 17 – Aug 31 |
| Beets | — | — | Feb 26 – Mar 26 | Aug 31 – Sep 14 |
| Potatoes | — | — | Feb 26 – Mar 19 | — |
| Swiss Chard | — | — | Mar 5 – Apr 2 | Aug 31 – Sep 14 |
| Cilantro | — | — | Mar 5 – Mar 26 | Sep 14 – Oct 5 |
| Green Beans | — | — | Mar 26 – Apr 16 | Aug 24 – Sep 7 |
| Sweet Corn | — | — | Mar 26 – Apr 9 | — |
| Sweet Potatoes | — | Apr 2 – Apr 23 | — | — |
| Garlic | — | — | — | Oct 26 – Nov 30 |
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 Gatesville, TX weather station, 17 km away (elevation 827 ft (252 m)).
Frost dates near Flat
- Mound Mar 19 · Nov 9
- Oglesby Mar 15 · Nov 18
- Moody Mar 15 · Nov 18
- Nolanville Mar 14 · Nov 20
- Gatesville Mar 19 · Nov 9
- Mc Gregor Mar 15 · Nov 18
- Pendleton Mar 14 · Nov 20
- Fort Hood Mar 14 · Nov 17
- Belton Mar 14 · Nov 20
- Killeen Mar 14 · Nov 17
Frequently asked questions
When is the last frost in Flat, TX?
The median last spring frost in Flat, TX is March 19. There is still about a 10% chance of frost after April 7, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Flat, TX?
The median first fall frost is November 9, with about a 10% chance of frost before October 25.
How long is the growing season in Flat, TX?
About 235 days between the median last spring frost and first fall frost.
What planting zone is Flat, TX?
Flat, TX is in USDA hardiness zone 8b.