Frost dates for Port Mansfield, TX
When the last spring frost and first fall frost usually come, and when to plant, from 30 years of NOAA weather records.
Last spring frost
January 12
typical year
Safe to plant
February 19
frost is over in 9 of 10 years
First fall frost
January 1
typical year
Growing season
362 days
frost-free, typical year
Frost watch this week
Tonight's and the next six nights' lows from the National Weather Service forecast for the station's location. Frost: 32°F or colder. Possible frost: 33–36°F, mostly in low spots on clear, still nights.
When to plant
Counted from this page's frost dates. Warm-season crops wait for the safe-to-plant date.
| Crop | Start indoors | Plant outside | Fall planting |
|---|---|---|---|
| Cool-season crops | |||
| Peas | Season usually too short. Try a quick variety or row covers. | ||
| Spinach | – | Dec 1 – 22 | Nov 6 – 20 |
| Lettuce | – | Dec 15 – Jan 5 | Nov 6 – 20 |
| Radishes | – | Dec 15 – Jan 26 | Nov 20 – Dec 4 |
| Onions | – | Dec 15 – 29 | – |
| Potatoes | Season usually too short. Try a quick variety or row covers. | ||
| Carrots | – | Dec 22 – Jan 12 | Oct 9 – 23 |
| Beets | – | Dec 15 – 29 | Oct 23 – Nov 6 |
| Kale | Nov 3 – 17 | Dec 15 – 29 | Oct 23 – Nov 6 |
| Broccoli | Nov 3 – 17 | Dec 29 – Jan 12 | Oct 23 – Nov 6 |
| Cabbage | Oct 20 – Nov 3 | Dec 15 – 29 | Oct 23 – Nov 6 |
| Garlic | – | – | Nov 20 – Dec 11 |
| Warm-season crops | |||
| Tomatoes | Season usually too short. Try a quick variety or row covers. | ||
| Peppers | Season usually too short. Try a quick variety or row covers. | ||
| Cucumbers | Season usually too short. Try a quick variety or row covers. | ||
| Zucchini | Season usually too short. Try a quick variety or row covers. | ||
| Pumpkins | Season usually too short. Try a quick variety or row covers. | ||
| Green beans | Season usually too short. Try a quick variety or row covers. | ||
| Sweet corn | Season usually too short. Try a quick variety or row covers. | ||
| Basil | Season usually too short. Try a quick variety or row covers. | ||
Onions: from sets. Green beans: until 10 weeks before the first fall frost. Garlic: harvest next summer.
The year at a glance
Start indoors Plant outside Fall planting
The chance of frost, by date
| 1 year in 10 | Half of years | 9 years in 10 | |
|---|---|---|---|
| Spring frost after | February 19 | January 12 | December 15 |
| Fall frost before | December 5 | January 1 | February 5 |
Frost here means 32°F or colder. Read across: in 1 year in 10, spring frost carries on past the first date, which is why that date is the safe-to-plant date.
Hard freeze (28°F)
A hard freeze kills most garden plants, even hardy ones. The last one in spring usually comes around January 7 (February 9 in a late year), and the first one in fall around January 5.
Where these dates come from
NOAA weather station PORT MANSFIELD, TX US (USC00417184), 1991–2020 climate normals. It's the nearest station for 1 zip code, all within 4 miles:
78598
Planting dates follow common university extension advice; your local extension service can fine-tune them for your soil and microclimate.