Frost dates for 77037 — Houston, TX
How Houston compares
- In 8 years out of 10, the last spring frost in Houston falls between January 12 and March 12, a 59-day window. The first fall frost falls between November 17 and January 11.
- The median last frost is 30 days earlier than the Texas median of Mar 15.
- Its 299-day growing season is among the longest of the 1,316 Texas places with a regular frost season.
- The last frost is 7 days earlier than the zone 9b median of Feb 20. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9b chart.
- The weather station records an average of 10 nights a year at or below 32°F.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | January 12 |
| 50% (median) | February 13 |
| 10% (safe for tender plants) | March 12 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 17 |
| 50% (median) | December 9 |
| 90% (late) | January 11 |
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 Houston, TX
Frost dates for 77037 — Houston, TX — last frost Feb 13, first frost Dec 9, zone 9b. whenisthelastfrost.com
When to plant vegetables in Houston, TX
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Nov 21 – Dec 5 | Jan 16 – Jan 30 | — | — |
| Peppers | Dec 5 – Dec 19 | Feb 27 – Mar 13 | — | — |
| Eggplant | Dec 5 – Dec 19 | Feb 27 – Mar 13 | — | — |
| Tomatoes | Dec 19 – Jan 2 | Feb 20 – Mar 6 | — | — |
| Lettuce | Dec 19 – Jan 2 | Jan 23 – Feb 6 | Jan 16 – Feb 20 | Oct 14 – Nov 11 |
| Kale | Dec 19 – Jan 2 | Jan 16 – Jan 30 | Jan 16 – Jan 30 | Sep 30 – Oct 21 |
| Broccoli | Dec 19 – Jan 2 | Jan 30 – Feb 13 | — | Sep 2 – Sep 23 |
| Cabbage | Dec 19 – Jan 2 | Jan 23 – Feb 6 | — | Sep 2 – Sep 23 |
| Cauliflower | Dec 19 – Jan 2 | Jan 30 – Feb 13 | — | Sep 2 – Sep 23 |
| Okra | Jan 2 – Jan 16 | Mar 6 – Mar 20 | Mar 6 – Mar 20 | — |
| Basil | Jan 2 – Jan 16 | Feb 20 – Mar 6 | — | — |
| Peas | — | — | Jan 2 – Jan 23 | Sep 16 – Oct 7 |
| Spinach | — | — | Jan 2 – Jan 23 | Oct 14 – Nov 4 |
| Radishes | — | — | Jan 9 – Feb 20 | Oct 28 – Nov 18 |
| Cucumbers | Jan 16 – Jan 23 | Feb 27 – Mar 6 | Feb 20 – Mar 6 | Sep 23 – Oct 7 |
| Zucchini & Summer Squash | Jan 16 – Jan 23 | — | Feb 20 – Mar 6 | Sep 30 – Oct 14 |
| Winter Squash & Pumpkins | Jan 16 – Jan 23 | — | Feb 20 – Mar 6 | — |
| Melons & Watermelon | Jan 16 – Jan 23 | Feb 27 – Mar 13 | — | — |
| Carrots | — | — | Jan 23 – Feb 20 | Sep 16 – Sep 30 |
| Beets | — | — | Jan 23 – Feb 20 | Sep 30 – Oct 14 |
| Potatoes | — | — | Jan 23 – Feb 13 | — |
| Swiss Chard | — | — | Jan 30 – Feb 27 | Sep 30 – Oct 14 |
| Cilantro | — | — | Jan 30 – Feb 20 | Oct 14 – Nov 4 |
| Green Beans | — | — | Feb 20 – Mar 13 | Sep 23 – Oct 7 |
| Sweet Corn | — | — | Feb 20 – Mar 6 | — |
| Sweet Potatoes | — | Feb 27 – Mar 20 | — | — |
| Garlic | — | — | — | Nov 25 – Dec 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 Houston Intercont Ap, TX weather station, 11 km away (elevation 95 ft (29 m)).
ZIP codes in Houston: 77001 77002 77003 77004 77005 77006 77007 77008 77009 77010 77011 77012 77013 77014 77015 77016 77017 77018 77019 77020 77021 77022 77023 77024 77025 77026 77027 77028 77029 77030 77031 77032 77033 77034 77035 77036 77037 77038 77039 77040 77041 77042 77043 77044 77045 77046 77047 77048 77049 77050 77051 77052 77053 77054 77055 77056 77057 77058 77059 77060 …
Frost dates near Houston
- North Houston Feb 13 · Dec 9
- Bellaire Feb 2 · Dec 25
- Humble Feb 13 · Dec 9
- Galena Park Feb 2 · Dec 25
- Kingwood Feb 13 · Dec 9
- Spring Feb 19 · Dec 3
- Channelview Feb 2 · Dec 25
- Alief Feb 2 · Dec 11
Frequently asked questions
When is the last frost in Houston, TX?
The median last spring frost in Houston, TX is February 13. There is still about a 10% chance of frost after March 12, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Houston, TX?
The median first fall frost is December 9, with about a 10% chance of frost before November 17.
How long is the growing season in Houston, TX?
About 299 days between the median last spring frost and first fall frost.
What planting zone is Houston, TX?
Houston, TX is in USDA hardiness zone 9b.