When is the last frost in League City, TX?

For ZIP code 77573, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Houston Nwso, TX weather station. There is a 1-in-10 chance of a frost after March 5.

When is the first frost in League City, TX?

The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 19, so tender plants are at risk from that point on.

How long is the growing season in 77573?

In half of years, the frost-free season (between the last and first 32°F frost) is at least 317 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 77573League City, TX

The average last spring frost in League City is January 31 and the average first fall frost is December 14, giving a typical growing season of about 317 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost: Jan 31
Average first fall frost: Dec 14
Growing season: 317 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 22 · Mar 17	Nov 9 · Nov 29 · Dec 22	281 days	100%
Frost / freeze (32°F)	Dec 25 · Jan 31 · Mar 5	Nov 19 · Dec 14 · Jan 19	317 days	94%
Hard freeze (28°F)	Dec 19 · Jan 17 · Feb 24	Dec 6 · Jan 3 · Feb 5	356 days	60%

Where these dates come from

ZIP code 77573 is matched to the NOAA station Houston Nwso, TX, 5.2 km away, at 19 ft elevation (6 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Houston Nwso, TX (used)	19 ft	Jan 31	Dec 14
Houston Clover Fld, TX	44 ft	Jan 31	Dec 27
Alvin, TX	28 ft	Feb 14	Dec 5
Houston Hobby Ap, TX	44 ft	Jan 30	Dec 28

Frost dates near League City

League City, TX 77574 · last Jan 31, first Dec 14
Pasadena, TX 77508 · last Jan 31, first Dec 14
Houston, TX 77058 · last Jan 31, first Dec 14
Webster, TX 77598 · last Jan 31, first Dec 27
Kemah, TX 77565 · last Jan 31, first Dec 14
Dickinson, TX 77539 · last Jan 31, first Dec 14
Friendswood, TX 77546 · last Jan 31, first Dec 27
Seabrook, TX 77586 · last Jan 31, first Dec 14

Frequently asked questions

When is the last frost in League City, TX?: For ZIP code 77573, the average last spring frost (32°F) is January 31, based on NOAA 1991-2020 climate normals for the Houston Nwso, TX weather station. There is a 1-in-10 chance of a frost after March 5.
When is the first frost in League City, TX?: The average first fall frost (32°F) is December 14. There is a 1-in-10 chance of frost by November 19, so tender plants are at risk from that point on.
How long is the growing season in 77573?: In half of years, the frost-free season (between the last and first 32°F frost) is at least 317 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.