Frost dates for 78522Brownsville, TX
Frost occurs in about 26% of years near Brownsville, based on NOAA 1991-2020 records for the Brownsville, TX station.
Frost occurs in about 26% 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.
| 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 19 · Jan 16 · Feb 18 | Nov 30 · Dec 30 · Feb 1 | 350 days | 70% |
| Frost / freeze (32°F) | Dec 11 · Jan 6 · Feb 1 | Dec 8 · Jan 2 · Jan 29 | 365 days | 26% |
| Hard freeze (28°F) | — | — | 365 days | 2% |
Where these dates come from
ZIP code 78522 is matched to the NOAA station Brownsville, TX, 8 km away, at 23 ft elevation (13 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Brownsville, TX (used) | 23 ft | Jan 6 | Jan 2 |
| Wfo Brownsville, TX | 15 ft | Jan 9 | Jan 4 |
| Port Isabel, TX | 17 ft | Jan 3 | Jan 1 |
| Port Isabel Cameron Ap, TX | 19 ft | Jan 8 | Jan 4 |
Frost dates near Brownsville
- Brownsville, TX 78520 · last Jan 6, first Jan 2
- Olmito, TX 78575 · last Jan 6, first Jan 2
- Port Isabel, TX 78578 · last Jan 3, first Jan 1
- Los Fresnos, TX 78566 · last Jan 8, first Jan 4
- Los Indios, TX 78567 · last Jan 9, first Jan 3
- San Benito, TX 78586 · last Jan 9, first Jan 3
- Lozano, TX 78568 · last Jan 8, first Dec 29
- Rio Hondo, TX 78583 · last Jan 8, first Dec 29
Frequently asked questions
- When is the last frost in Brownsville, TX?
- Frost occurs in about 26% of years at the nearest NOAA station (Brownsville, TX), so there is no reliable average last frost date.
- When is the first frost in Brownsville, TX?
- Frost occurs in about 26% 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.