When is the last frost in Rockport, TX?

For ZIP code 78381, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Rockport, TX weather station. There is a 1-in-10 chance of a frost after February 28.

When is the first frost in Rockport, TX?

The average first fall frost (32°F) is December 25. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.

How long is the growing season in 78381?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 328 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 78381Rockport, TX

The average last spring frost in Rockport is January 31 and the average first fall frost is December 25, giving a typical growing season of about 328 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 31
Average first fall frost: Dec 25
Growing season: 328 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 18 · Feb 16 · Mar 10	Nov 15 · Dec 6 · Jan 3	295 days	99%
Frost / freeze (32°F)	Dec 26 · Jan 31 · Feb 28	Nov 28 · Dec 25 · Jan 31	328 days	89%
Hard freeze (28°F)	Dec 19 · Jan 20 · Feb 20	Dec 11 · Jan 5 · Feb 8	364 days	53%

Where these dates come from

ZIP code 78381 is matched to the NOAA station Rockport, TX, 3.7 km away, at 8 ft elevation (5 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Rockport, TX (used)	8 ft	Jan 31	Dec 25
Rockport Aransas Co Ap, TX	22 ft	Jan 23	Jan 1
Port Aransas, TX	12 ft	Jan 16	Jan 5
Welder Wildlife Foundation, TX	50 ft	Feb 24	Dec 1

Frost dates near Rockport

Rockport, TX 78382 · last Jan 31, first Dec 25
Fulton, TX 78358 · last Jan 23, first Jan 1
Aransas Pass, TX 78336 · last Jan 16, first Jan 5
Bayside, TX 78340 · last Jan 23, first Jan 1
Ingleside, TX 78362 · last Jan 16, first Jan 5
Gregory, TX 78359 · last Jan 16, first Jan 5
Portland, TX 78374 · last Jan 28, first Dec 21
Port Aransas, TX 78373 · last Jan 16, first Jan 5

Frequently asked questions

When is the last frost in Rockport, TX?: For ZIP code 78381, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Rockport, TX weather station. There is a 1-in-10 chance of a frost after February 28.
When is the first frost in Rockport, TX?: The average first fall frost (32°F) is December 25. There is a 1-in-10 chance of frost by November 28, so tender plants are at risk from that point on.
How long is the growing season in 78381?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 328 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.