Knippa, TX frost dates
Last spring frostMar 6median date
First fall frostNov 20median date
Growing season259 daysfrost-free
Hardiness zone9aZone 9a
How Knippa compares
- In 8 years out of 10, the last spring frost in Knippa falls between February 9 and March 24, a 43-day window. The first fall frost falls between November 3 and December 8.
- The median last frost is 9 days earlier than the Texas median of Mar 15.
- Its 259-day growing season is longer than 70% of the 1,316 Texas places with a regular frost season (state median 245 days).
- The last frost is typical for zone 9a, where the median is Mar 3.
- The weather station records an average of 25 nights a year at or below 32°F.
- Compared with San Antonio, TX, 112 km away, the last frost here is 9 days later than there and the growing season is 17 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 9 |
| 50% (median) | March 6 |
| 10% (safe for tender plants) | March 24 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 3 |
| 50% (median) | November 20 |
| 90% (late) | December 8 |
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 Knippa, TX
Knippa, TX frost dates — last frost Mar 6, first frost Nov 20, zone 9a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 12 to Dec 26Transplant outside: Feb 6 to Feb 20
Start indoors: Dec 26 to Jan 9Start indoors: Dec 26 to Jan 9Transplant outside: Mar 20 to Apr 3
Start indoors: Dec 26 to Jan 9Start indoors: Dec 26 to Jan 9Transplant outside: Mar 20 to Apr 3
Start indoors: Jan 9 to Jan 23Transplant outside: Mar 13 to Mar 27
Start indoors: Jan 9 to Jan 23Transplant outside: Feb 13 to Feb 27Sow outdoors: Feb 6 to Mar 13Plant for fall: Sep 25 to Oct 23
Start indoors: Jan 9 to Jan 23Transplant outside: Feb 6 to Feb 20Sow outdoors: Feb 6 to Feb 20Plant for fall: Sep 11 to Oct 2
Start indoors: Jan 9 to Jan 23Transplant outside: Feb 20 to Mar 6Plant for fall: Aug 14 to Sep 4
Start indoors: Jan 9 to Jan 23Transplant outside: Feb 13 to Feb 27Plant for fall: Aug 14 to Sep 4
Start indoors: Jan 9 to Jan 23Transplant outside: Feb 20 to Mar 6Plant for fall: Aug 14 to Sep 4
Start indoors: Jan 23 to Feb 6Transplant outside: Mar 27 to Apr 10Sow outdoors: Mar 27 to Apr 10
Start indoors: Jan 23 to Feb 6Transplant outside: Mar 13 to Mar 27
Sow outdoors: Jan 23 to Feb 13Plant for fall: Aug 28 to Sep 18
Sow outdoors: Jan 23 to Feb 13Plant for fall: Sep 25 to Oct 16
Sow outdoors: Jan 30 to Mar 13Plant for fall: Oct 9 to Oct 30
Start indoors: Feb 6 to Feb 13Transplant outside: Mar 20 to Mar 27Sow outdoors: Mar 13 to Mar 27Plant for fall: Sep 4 to Sep 18
Start indoors: Feb 6 to Feb 13Sow outdoors: Mar 13 to Mar 27Plant for fall: Sep 11 to Sep 25
Start indoors: Feb 6 to Feb 13Sow outdoors: Mar 13 to Mar 27
Start indoors: Feb 6 to Feb 13Transplant outside: Mar 20 to Apr 3
Sow outdoors: Feb 13 to Mar 13Plant for fall: Aug 28 to Sep 11
Sow outdoors: Feb 13 to Mar 13Plant for fall: Sep 11 to Sep 25
Sow outdoors: Feb 13 to Mar 6
Sow outdoors: Feb 20 to Mar 20Plant for fall: Sep 11 to Sep 25
Sow outdoors: Feb 20 to Mar 13Plant for fall: Sep 25 to Oct 16
Sow outdoors: Mar 13 to Apr 3Plant for fall: Sep 4 to Sep 18
Sow outdoors: Mar 13 to Mar 27
Transplant outside: Mar 20 to Apr 10
Plant for fall: Nov 6 to Dec 11
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Knippa, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 12 – Dec 26 | Feb 6 – Feb 20 | — | — |
| Peppers | Dec 26 – Jan 9 | Mar 20 – Apr 3 | — | — |
| Eggplant | Dec 26 – Jan 9 | Mar 20 – Apr 3 | — | — |
| Tomatoes | Jan 9 – Jan 23 | Mar 13 – Mar 27 | — | — |
| Lettuce | Jan 9 – Jan 23 | Feb 13 – Feb 27 | Feb 6 – Mar 13 | Sep 25 – Oct 23 |
| Kale | Jan 9 – Jan 23 | Feb 6 – Feb 20 | Feb 6 – Feb 20 | Sep 11 – Oct 2 |
| Broccoli | Jan 9 – Jan 23 | Feb 20 – Mar 6 | — | Aug 14 – Sep 4 |
| Cabbage | Jan 9 – Jan 23 | Feb 13 – Feb 27 | — | Aug 14 – Sep 4 |
| Cauliflower | Jan 9 – Jan 23 | Feb 20 – Mar 6 | — | Aug 14 – Sep 4 |
| Okra | Jan 23 – Feb 6 | Mar 27 – Apr 10 | Mar 27 – Apr 10 | — |
| Basil | Jan 23 – Feb 6 | Mar 13 – Mar 27 | — | — |
| Peas | — | — | Jan 23 – Feb 13 | Aug 28 – Sep 18 |
| Spinach | — | — | Jan 23 – Feb 13 | Sep 25 – Oct 16 |
| Radishes | — | — | Jan 30 – Mar 13 | Oct 9 – Oct 30 |
| Cucumbers | Feb 6 – Feb 13 | Mar 20 – Mar 27 | Mar 13 – Mar 27 | Sep 4 – Sep 18 |
| Zucchini & Summer Squash | Feb 6 – Feb 13 | — | Mar 13 – Mar 27 | Sep 11 – Sep 25 |
| Winter Squash & Pumpkins | Feb 6 – Feb 13 | — | Mar 13 – Mar 27 | — |
| Melons & Watermelon | Feb 6 – Feb 13 | Mar 20 – Apr 3 | — | — |
| Carrots | — | — | Feb 13 – Mar 13 | Aug 28 – Sep 11 |
| Beets | — | — | Feb 13 – Mar 13 | Sep 11 – Sep 25 |
| Potatoes | — | — | Feb 13 – Mar 6 | — |
| Swiss Chard | — | — | Feb 20 – Mar 20 | Sep 11 – Sep 25 |
| Cilantro | — | — | Feb 20 – Mar 13 | Sep 25 – Oct 16 |
| Green Beans | — | — | Mar 13 – Apr 3 | Sep 4 – Sep 18 |
| Sweet Corn | — | — | Mar 13 – Mar 27 | — |
| Sweet Potatoes | — | Mar 20 – Apr 10 | — | — |
| Garlic | — | — | — | Nov 6 – Dec 11 |
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 Hondo Muni Ap, TX weather station, 46 km away (elevation 919 ft (280 m)). That is far enough away that your dates may differ, especially if your elevation is different.
Frost dates near Knippa
- Sabinal Mar 6 · Nov 20
- Uvalde Mar 12 · Nov 14
- Concan Mar 12 · Nov 14
- D Hanis Mar 6 · Nov 20
- Utopia Mar 16 · Nov 15
- Batesville Feb 10 · Dec 10
- Rio Frio Mar 12 · Nov 14
- La Pryor Feb 10 · Dec 10
- Hondo Feb 28 · Nov 27
- Yancey Feb 28 · Nov 27
Frequently asked questions
When is the last frost in Knippa, TX?
The median last spring frost in Knippa, TX is March 6. There is still about a 10% chance of frost after March 24, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Knippa, TX?
The median first fall frost is November 20, with about a 10% chance of frost before November 3.
How long is the growing season in Knippa, TX?
About 259 days between the median last spring frost and first fall frost.
What planting zone is Knippa, TX?
Knippa, TX is in USDA hardiness zone 9a.