When is the last frost in Port Bolivar, TX?

Frost occurs in about 48% of years at the nearest NOAA station (Galveston Scholes Fld, TX), so there is no reliable average last frost date.

When is the first frost in Port Bolivar, TX?

Frost occurs in about 48% of years at the nearest NOAA station.

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 77650Port Bolivar, TX

Frost occurs in about 48% of years near Port Bolivar, based on NOAA 1991-2020 records for the Galveston Scholes Fld, TX station.

Frost occurs in about 48% of years. Frost-tender plants can usually grow year-round, but cover them if a rare cold snap is forecast.

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)	Dec 30 · Jan 30 · Mar 2	Dec 1 · Dec 26 · Jan 23	334 days	88%
Frost / freeze (32°F)	Dec 21 · Jan 18 · Feb 18	Dec 13 · Jan 7 · Feb 7	365 days	48%
Hard freeze (28°F)	Dec 17 · Jan 9 · Feb 11	Dec 15 · Jan 8 · Feb 8	365 days	13%

Where these dates come from

ZIP code 77650 is matched to the NOAA station Galveston Scholes Fld, TX, 23.9 km away, at 5 ft elevation (2 ft lower than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Galveston Scholes Fld, TX (used)	5 ft	Jan 18	Jan 7
Galveston, TX	7 ft	Jan 25	Jan 1
Houston Nwso, TX	19 ft	Jan 31	Dec 14
Anahuac, TX	24 ft	Feb 12	Dec 6

Frost dates near Port Bolivar

Galveston, TX 77553 · last Jan 18, first Jan 7
Texas City, TX 77592 · last Jan 18, first Jan 7
Gilchrist, TX 77617 · last Feb 12, first Dec 6
Anahuac, TX 77514 · last Feb 12, first Dec 6
High Island, TX 77623 · last Feb 12, first Dec 6
La Marque, TX 77568 · last Jan 18, first Jan 7
Bacliff, TX 77518 · last Jan 31, first Dec 14
Hitchcock, TX 77563 · last Jan 18, first Jan 7

Frequently asked questions

When is the last frost in Port Bolivar, TX?: Frost occurs in about 48% of years at the nearest NOAA station (Galveston Scholes Fld, TX), so there is no reliable average last frost date.
When is the first frost in Port Bolivar, TX?: Frost occurs in about 48% of years at the nearest NOAA station.
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.