When is the last frost in Mcallen, TX?

Frost occurs in about 29% of years at the nearest NOAA station (Mcallen Miller Intl Ap, TX), so there is no reliable average last frost date.

When is the first frost in Mcallen, TX?

Frost occurs in about 29% 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 78503Mcallen, TX

Frost occurs in about 29% of years near Mcallen, based on NOAA 1991-2020 records for the Mcallen Miller Intl Ap, TX station.

Frost occurs in about 29% 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 17 · Jan 19 · Feb 22	Nov 30 · Dec 29 · Feb 5	348 days	74%
Frost / freeze (32°F)	Dec 17 · Jan 9 · Feb 13	Dec 11 · Jan 3 · Feb 9	365 days	29%
Hard freeze (28°F)	—	—	365 days	6%

Where these dates come from

ZIP code 78503 is matched to the NOAA station Mcallen Miller Intl Ap, TX, 0.8 km away, at 100 ft elevation (2 ft higher than the ZIP code's center). Nearby stations for comparison:

Station	Elevation	Avg last frost	Avg first frost
Mcallen Miller Intl Ap, TX (used)	100 ft	Jan 9	Jan 3
Mcallen, TX	100 ft	Jan 9	Jan 1
Edinburg, TX	96 ft	Jan 8	Jan 2
La Joya, TX	213 ft	Jan 23	Dec 28

Frost dates near Mcallen

Mcallen, TX 78505 · last Jan 9, first Jan 1
Pharr, TX 78577 · last Jan 9, first Jan 1
Hidalgo, TX 78557 · last Jan 9, first Jan 3
Mission, TX 78572 · last Jan 9, first Jan 1
San Juan, TX 78589 · last Jan 9, first Jan 1
Edinburg, TX 78539 · last Jan 8, first Jan 2
Alamo, TX 78516 · last Jan 8, first Jan 2
Donna, TX 78537 · last Jan 8, first Dec 31

Frequently asked questions

When is the last frost in Mcallen, TX?: Frost occurs in about 29% of years at the nearest NOAA station (Mcallen Miller Intl Ap, TX), so there is no reliable average last frost date.
When is the first frost in Mcallen, TX?: Frost occurs in about 29% 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.