When is the last frost in Hebbronville, TX?

For ZIP code 78361, the average last spring frost (32°F) is February 4, based on NOAA 1991-2020 climate normals for the Hebbronville, TX weather station. There is a 1-in-10 chance of a frost after March 7.

When is the first frost in Hebbronville, TX?

The average first fall frost (32°F) is December 12. There is a 1-in-10 chance of frost by November 22, so tender plants are at risk from that point on.

How long is the growing season in 78361?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 320 days long.

Are these frost dates a forecast?

No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.

Frost dates for 78361Hebbronville, TX

The average last spring frost in Hebbronville is February 4 and the average first fall frost is December 12, giving a typical growing season of about 320 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 4
Average first fall frost: Dec 12
Growing season: 320 days

Frost risk by date

NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.

Spring dates: chance of a frost AFTER the date. Fall dates: chance of a frost BEFORE the date.
Temperature	Last spring: 90% / 50% / 10% chance	First fall: 10% / 50% / 90% chance	Growing season (50%)	Years with at least one
Light frost (36°F)	Jan 22 · Feb 23 · Mar 16	Nov 12 · Dec 1 · Dec 30	285 days	100%
Frost / freeze (32°F)	Dec 28 · Feb 4 · Mar 7	Nov 22 · Dec 12 · Jan 18	320 days	95%
Hard freeze (28°F)	Dec 18 · Jan 15 · Feb 28	Dec 4 · Dec 30 · Feb 4	354 days	68%

Where these dates come from

ZIP code 78361 is matched to the NOAA station Hebbronville, TX, 2.3 km away, at 580 ft elevation (19 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Hebbronville, TX (used)	580 ft	Feb 4	Dec 12
Bruni, TX	771 ft	Jan 30	Dec 18
Benavides 2, TX	380 ft	Feb 20	Dec 1
Falfurrias, TX	139 ft	Feb 25	Dec 1

Frost dates near Hebbronville

Bruni, TX 78344 · last Jan 30, first Dec 18
Realitos, TX 78376 · last Feb 20, first Dec 1
Oilton, TX 78371 · last Jan 30, first Dec 18
Mirando City, TX 78369 · last Jan 30, first Dec 18
Concepcion, TX 78349 · last Feb 20, first Dec 1
Benavides, TX 78341 · last Feb 20, first Dec 1
Guerra, TX 78360 · last Jan 19, first Dec 22
Falfurrias, TX 78355 · last Feb 25, first Dec 1

Frequently asked questions

When is the last frost in Hebbronville, TX?: For ZIP code 78361, the average last spring frost (32°F) is February 4, based on NOAA 1991-2020 climate normals for the Hebbronville, TX weather station. There is a 1-in-10 chance of a frost after March 7.
When is the first frost in Hebbronville, TX?: The average first fall frost (32°F) is December 12. There is a 1-in-10 chance of frost by November 22, so tender plants are at risk from that point on.
How long is the growing season in 78361?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 320 days long.
Are these frost dates a forecast?: No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.