When is the last frost in South Houston, TX?

For ZIP code 77587, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Houston Hobby Ap, TX weather station. There is a 1-in-10 chance of a frost after March 1.

When is the first frost in South Houston, TX?

The average first fall frost (32°F) is December 28. There is a 1-in-10 chance of frost by November 27, so tender plants are at risk from that point on.

How long is the growing season in 77587?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 330 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 77587South Houston, TX

The average last spring frost in South Houston is January 30 and the average first fall frost is December 28, giving a typical growing season of about 330 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 30
Average first fall frost: Dec 28
Growing season: 330 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 20 · Feb 17 · Mar 12	Nov 15 · Dec 4 · Jan 3	293 days	100%
Frost / freeze (32°F)	Dec 29 · Jan 30 · Mar 1	Nov 27 · Dec 28 · Jan 27	330 days	86%
Hard freeze (28°F)	Dec 22 · Jan 17 · Feb 17	Dec 12 · Jan 8 · Feb 4	365 days	47%

Where these dates come from

ZIP code 77587 is matched to the NOAA station Houston Hobby Ap, TX, 5.9 km away, at 44 ft elevation (11 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Houston Hobby Ap, TX (used)	44 ft	Jan 30	Dec 28
Houston-Port, TX	19 ft	Feb 2	Dec 25
Houston Clover Fld, TX	44 ft	Jan 31	Dec 27
Houston Nwso, TX	19 ft	Jan 31	Dec 14

Frost dates near South Houston

Houston, TX 77034 · last Jan 30, first Dec 28
Pasadena, TX 77502 · last Jan 30, first Dec 28
Galena Park, TX 77547 · last Jan 30, first Dec 28
Deer Park, TX 77536 · last Jan 30, first Dec 28
Pearland, TX 77581 · last Jan 31, first Dec 27
Webster, TX 77598 · last Jan 31, first Dec 27
Friendswood, TX 77549 · last Jan 31, first Dec 27
La Porte, TX 77571 · last Jan 30, first Dec 28

Frequently asked questions

When is the last frost in South Houston, TX?: For ZIP code 77587, the average last spring frost (32°F) is January 30, based on NOAA 1991-2020 climate normals for the Houston Hobby Ap, TX weather station. There is a 1-in-10 chance of a frost after March 1.
When is the first frost in South Houston, TX?: The average first fall frost (32°F) is December 28. There is a 1-in-10 chance of frost by November 27, so tender plants are at risk from that point on.
How long is the growing season in 77587?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 330 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.