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Will it freeze in Sinton in the next 7 nights?
No overnight lows at or below 32°F are forecast in Sinton during the next 7 nights in the available NWS frost forecast.
Tonight: forecast low 66°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 66°F Above 36°F · Slight Chance Showers And Thunderstorms
- Fri, Nov 6 61°F Above 36°F · Mostly Cloudy
- Sat, Nov 7 59°F Above 36°F · Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
- Sun, Nov 8 54°F Above 36°F · Chance Rain Showers
- Mon, Nov 9 55°F Above 36°F · Slight Chance Rain Showers
- Tue, Nov 10 57°F Above 36°F · Mostly Cloudy
- Wed, Nov 11 59°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 Sinton
The median first fall hard-freeze date (28°F) is January 1, from NOAA’s 1991–2020 Climate Normals at Sinton. 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 22 · Feb 25 · Mar 16 | Nov 10 · Dec 1 · Dec 28 | 284 days |
| 32°F freeze | Dec 27 · Feb 1 · Mar 6 | Nov 22 · Dec 17 · Jan 17 | 324 days |
| 28°F hard freeze | Dec 14 · Jan 12 · Feb 24 | Dec 3 · Jan 1 · Feb 2 | 361 days |
Average high temperature by month
1991–2020 normals at Sinton
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 Sinton, TX come from the nearest weather station with freeze statistics in NOAA’s 1991–2020 Climate Normals: Sinton (station USC00418354, elevation 48 ft), 2.5 mi from Sinton. 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 Sinton
| City | Distance | Last spring frost | First fall frost |
|---|---|---|---|
| Portland, TX | 14 mi | Jan 31 | Dec 22 |
| Corpus Christi, TX | 18 mi | Jan 31 | Dec 22 |
| Robstown, TX | 20 mi | Jan 26 | Dec 24 |
| Ingleside, TX | 21 mi | rare | rare |
| Aransas Pass, TX | 25 mi | rare | rare |
| Rockport, TX | 27 mi | Jan 31 | Dec 25 |
| Beeville, TX | 30 mi | Feb 17 | Dec 8 |
| Alice, TX | 40 mi | Jan 29 | Dec 29 |
| Kingsville, TX | 43 mi | Jan 25 | Dec 20 |
| Victoria, TX | 63 mi | Feb 14 | Dec 9 |
Frequently asked questions
When is the last frost in Sinton?
On average, the last spring frost (32°F) in Sinton is around February 1. In about 1 year in 10 it comes after March 6, and in 9 years in 10 it comes after December 27.
When is the first frost in Sinton?
The first fall frost (32°F) usually arrives around December 17. There’s a 10% chance of a freeze by November 22 and a 90% chance by January 17.
Can it frost in Sinton 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 25.
What growing zone is Sinton?
Sinton 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 78387. See growing zones in Texas.
More: all Texas frost dates · Texas growing zones · frost vs. freeze