FrostDateByZip

Frost dates for 77991Vanderbilt, TX

The average last spring frost in Vanderbilt is February 1 and the average first fall frost is December 21, giving a typical growing season of about 321 days. Dates are based on NOAA 1991-2020 climate normals.

Average last spring frost
Feb 1

Safer after Mar 4 (1-in-10 risk)

Average first fall frost
Dec 21

Possible by Nov 25 (1-in-10 risk)

Growing season
321 days

First frost typically in 55 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.
TemperatureLast spring: 90% / 50% / 10% chanceFirst fall: 10% / 50% / 90% chanceGrowing season (50%)Years with at least one
Light frost (36°F)Jan 25 · Feb 22 · Mar 18Nov 10 · Dec 3 · Dec 28285 days100%
Frost / freeze (32°F)Dec 24 · Feb 1 · Mar 4Nov 25 · Dec 21 · Jan 18321 days93%
Hard freeze (28°F)Dec 17 · Jan 21 · Feb 23Dec 8 · Jan 1 · Feb 6358 days58%

Where these dates come from

ZIP code 77991 is matched to the NOAA station Pt Comfort, TX, 17.3 km away, at 20 ft elevation (20 ft higher than the ZIP code's center). Nearby stations for comparison:

StationElevationAvg last frostAvg first frost
Pt Comfort, TX (used)20 ftFeb 1Dec 21
Victoria Rgnl Ap, TX104 ftFeb 4Dec 9
Victoria Rgnl Ap, TX115 ftFeb 18Dec 4
Palacios Muni Ap, TX12 ftFeb 1Dec 17

Frost dates near Vanderbilt

Frequently asked questions

When is the last frost in Vanderbilt, TX?
For ZIP code 77991, the average last spring frost (32°F) is February 1, based on NOAA 1991-2020 climate normals for the Pt Comfort, TX weather station. There is a 1-in-10 chance of a frost after March 4.
When is the first frost in Vanderbilt, TX?
The average first fall frost (32°F) is December 21. There is a 1-in-10 chance of frost by November 25, so tender plants are at risk from that point on.
How long is the growing season in 77991?
In half of years, the frost-free season (between the last and first 32°F frost) is at least 321 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.