Frost dates for 78599Weslaco, TX
Frost occurs in about 44% of years near Weslaco, based on NOAA 1991-2020 records for the Weslaco, TX station.
Frost occurs in about 44% 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 18 · Jan 28 · Mar 1 | Nov 25 · Dec 19 · Jan 27 | 331 days | 85% |
| Frost / freeze (32°F) | Dec 8 · Jan 8 · Feb 18 | Dec 3 · Dec 31 · Feb 7 | 365 days | 44% |
| Hard freeze (28°F) | — | — | 365 days | 10% |
Where these dates come from
ZIP code 78599 is matched to the NOAA station Weslaco, TX, 2.9 km away, at 75 ft elevation (4 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Weslaco, TX (used) | 75 ft | Jan 8 | Dec 31 |
| Santa Rosa 3 Wnw, TX | 50 ft | Jan 10 | Dec 27 |
| Edinburg, TX | 96 ft | Jan 8 | Jan 2 |
| Mcallen, TX | 100 ft | Jan 9 | Jan 1 |
Frost dates near Weslaco
- Weslaco, TX 78596 · last Jan 8, first Dec 31
- Donna, TX 78537 · last Jan 8, first Dec 31
- Mercedes, TX 78570 · last Jan 8, first Dec 31
- Progreso, TX 78579 · last Jan 8, first Dec 31
- Alamo, TX 78516 · last Jan 8, first Jan 2
- Elsa, TX 78543 · last Jan 10, first Dec 27
- La Blanca, TX 78558 · last Jan 8, first Jan 2
- La Feria, TX 78559 · last Jan 10, first Dec 27
Frequently asked questions
- When is the last frost in Weslaco, TX?
- Frost occurs in about 44% of years at the nearest NOAA station (Weslaco, TX), so there is no reliable average last frost date.
- When is the first frost in Weslaco, TX?
- Frost occurs in about 44% 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.