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Will it freeze in Port Lavaca in the next 7 nights?
No overnight lows at or below 32°F are forecast in Port Lavaca during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 65°F. Above 36°F.
NWS forecast period: Thu, Nov 5, 6:00 PM CST to Fri, Nov 6, 6:00 AM CST.
No nights at or below 36°F in the National Weather Service forecast for the next 7 nights.
- Tonight 65°F Above 36°F · Partly Cloudy
- Fri, Nov 6 62°F Above 36°F · Mostly Cloudy
- Sat, Nov 7 59°F Above 36°F · Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
- Sun, Nov 8 56°F Above 36°F · Chance Rain Showers
- Mon, Nov 9 57°F Above 36°F · Slight Chance Rain Showers
- Tue, Nov 10 59°F Above 36°F · Slight Chance Showers And Thunderstorms
- Wed, Nov 11 61°F Above 36°F · Mostly Cloudy
Overnight lows from the National Weather Service forecast for this location. This covers the available forecast window, not the first freeze of the whole season. Frost can form above 32°F on clear, calm nights.
Frost and freeze probabilities
Freeze dates shift from year to year. Spring percentages describe the chance of a freeze after the stated date; fall percentages describe the chance of a freeze by that date. The 10% spring date is the cautious one: a later freeze happens about 1 year in 10.
These dates describe historical probabilities, not this year’s forecast or the earliest and latest possible freezes. Different weather stations or probability thresholds can produce different published dates for the same city.
Average first hard freeze in Port Lavaca
The median first fall hard-freeze date (28°F) is January 1, from NOAA’s 1991–2020 Climate Normals at Point Comfort. This is the 50% probability date, not a forecast for this year.
| Temperature | Last spring date 90% · 50% · 10% chance of a later freeze | First fall date 10% · 50% · 90% chance of an earlier freeze | Season |
|---|---|---|---|
| 36°F frost possible | Jan 25 · Feb 22 · Mar 18 | Nov 10 · Dec 3 · Dec 28 | 285 days |
| 32°F freeze | Dec 24 · Feb 1 · Mar 4 | Nov 25 · Dec 21 · Jan 18 | 321 days |
| 28°F hard freeze | Dec 17 · Jan 21 · Feb 23 | Dec 8 · Jan 1 · Feb 6 | 358 days |
Average high temperature by month
1991–2020 normals at Point Comfort
Average low temperature by month
Months with lows near or below freezing carry frost risk
Where these frost dates come from
The frost dates for Port Lavaca, TX come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Point Comfort (station USC00417140, elevation 20 ft), 5.2 mi from Port Lavaca. Local conditions (valleys, hilltops, distance to water, city heat) can shift frost dates by days or weeks. The hardiness zone is from the 2023 USDA Plant Hardiness Zone Map (USDA ARS and Oregon State University PRISM). See our methodology.
Frost dates near Port Lavaca
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Edna, TX | 25 mi | Feb 18 | Dec 4 |
| Victoria, TX | 26 mi | Feb 14 | Dec 9 |
| El Campo, TX | 45 mi | Feb 23 | Dec 5 |
| Rockport, TX | 47 mi | Jan 31 | Dec 25 |
| Bay City, TX | 48 mi | Feb 20 | Dec 3 |
| Cuero, TX | 52 mi | Mar 2 | Nov 27 |
| Yoakum, TX | 56 mi | Mar 2 | Nov 30 |
| Aransas Pass, TX | 57 mi | rare | rare |
| Wharton, TX | 58 mi | Feb 23 | Dec 5 |
| Ingleside, TX | 63 mi | rare | rare |
Frequently asked questions
When is the last frost in Port Lavaca?
On average, the last spring frost (32°F) in Port Lavaca is around February 1. In about 1 year in 10 it comes after March 4, and in 9 years in 10 it comes after December 24.
When is the first frost in Port Lavaca?
The first fall frost (32°F) usually arrives around December 21. There’s a 10% chance of a freeze by November 25 and a 90% chance by January 18.
Can it frost in Port Lavaca after the last frost date?
Yes. Frost can form on clear, calm nights even when the air stays above 32°F. Temperatures of 36°F or lower, cold enough for frost on exposed plants, have a 50% chance of occurring after February 22.
What growing zone is Port Lavaca?
Port Lavaca is in USDA Plant Hardiness Zone 9b (average annual extreme minimum temperature 25 to 30°F), based on the 2023 USDA map for ZIP code 77979. See growing zones in Texas.
More: all Texas frost dates · Texas growing zones · frost vs. freeze