When is the last frost in Mirando City, TX?

For ZIP code 78369, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Bruni, TX weather station. There is a 1-in-10 chance of a frost after March 1.

When is the first frost in Mirando City, TX?

The average first fall frost (32°F) is December 18. 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 78369?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 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 78369Mirando City, TX

The average last spring frost in Mirando City is January 30 and the average first fall frost is December 18, giving a typical growing season of about 323 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 30
Average first fall frost: Dec 18
Growing season: 323 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 21 · Feb 19 · Mar 13	Nov 11 · Nov 30 · Dec 30	289 days	100%
Frost / freeze (32°F)	Dec 25 · Jan 30 · Mar 1	Nov 22 · Dec 18 · Jan 25	323 days	90%
Hard freeze (28°F)	Dec 5 · Jan 11 · Feb 17	Dec 1 · Jan 1 · Feb 6	365 days	52%

Where these dates come from

ZIP code 78369 is matched to the NOAA station Bruni, TX, 16.3 km away, at 771 ft elevation (30 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Bruni, TX (used)	771 ft	Jan 30	Dec 18
Hebbronville, TX	580 ft	Feb 4	Dec 12
Laredo Afb, TX	505 ft	Jan 20	Dec 25
Laredo 2, TX	430 ft	Jan 25	Dec 17

Frost dates near Mirando City

Oilton, TX 78371 · last Jan 30, first Dec 18
Bruni, TX 78344 · last Jan 30, first Dec 18
Laredo, TX 78043 · last Jan 25, first Dec 17
Hebbronville, TX 78361 · last Feb 4, first Dec 12
Realitos, TX 78376 · last Feb 20, first Dec 1
Benavides, TX 78341 · last Feb 20, first Dec 1
Freer, TX 78357 · last Feb 10, first Dec 7
San Ygnacio, TX 78067 · last Jan 19, first Dec 22

Frequently asked questions

When is the last frost in Mirando City, TX?: For ZIP code 78369, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Bruni, TX weather station. There is a 1-in-10 chance of a frost after March 1.
When is the first frost in Mirando City, TX?: The average first fall frost (32°F) is December 18. 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 78369?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 323 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.