When is the last frost in Riviera, TX?

For ZIP code 78379, the average last spring frost (32°F) is February 3, based on NOAA 1991-2020 climate normals for the Kingsville Naas, TX weather station. There is a 1-in-10 chance of a frost after March 6.

When is the first frost in Riviera, TX?

The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 21, so tender plants are at risk from that point on.

How long is the growing season in 78379?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 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 78379Riviera, TX

The average last spring frost in Riviera is February 3 and the average first fall frost is December 14, giving a typical growing season of about 314 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Feb 3
Average first fall frost: Dec 14
Growing season: 314 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 26 · Feb 22 · Mar 15	Nov 10 · Nov 29 · Dec 26	281 days	100%
Frost / freeze (32°F)	Dec 27 · Feb 3 · Mar 6	Nov 21 · Dec 14 · Jan 22	314 days	93%
Hard freeze (28°F)	Dec 11 · Jan 14 · Feb 28	Dec 2 · Dec 28 · Feb 8	355 days	58%

Where these dates come from

ZIP code 78379 is matched to the NOAA station Kingsville Naas, TX, 20.2 km away, at 56 ft elevation (33 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Kingsville Naas, TX (used)	56 ft	Feb 3	Dec 14
Sarita 7 E, TX	38 ft	Feb 17	Dec 8
Kingsville, TX	57 ft	Jan 25	Dec 20
Bishop, TX	67 ft	Feb 13	Dec 7

Frost dates near Riviera

Kingsville, TX 78363 · last Feb 3, first Dec 14
Sarita, TX 78385 · last Feb 25, first Dec 1
Bishop, TX 78343 · last Jan 25, first Dec 20
Premont, TX 78375 · last Feb 25, first Dec 1
Falfurrias, TX 78355 · last Feb 25, first Dec 1
Driscoll, TX 78351 · last Jan 26, first Dec 24
Chapman Ranch, TX 78347 · last Jan 29, first Dec 24
Ben Bolt, TX 78342 · last Feb 5, first Dec 10

Frequently asked questions

When is the last frost in Riviera, TX?: For ZIP code 78379, the average last spring frost (32°F) is February 3, based on NOAA 1991-2020 climate normals for the Kingsville Naas, TX weather station. There is a 1-in-10 chance of a frost after March 6.
When is the first frost in Riviera, TX?: The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 21, so tender plants are at risk from that point on.
How long is the growing season in 78379?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 314 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.