Olmito, TX frost dates
Frost is light and occasional here — typically a few cold nights around midwinter (about 0 a year). Cover tender plants when frost is forecast.
How Olmito compares
- In a typical year, frost nights in Olmito fall between January 4 and January 9. In 1 year in 10 the first frost comes as early as December 9, or the last frost as late as March 1.
- Olmito shares its weather station with Brownsville, TX, 12 km away, so the two have the same frost dates.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | December 12 |
| 50% (median) | January 9 |
| 10% (safe for tender plants) | March 1 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | December 9 |
| 50% (median) | January 4 |
| 90% (late) | February 18 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Gardening where frost is rare
Olmito, TX only freezes on a few winter nights, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
About these dates
Based on 1991–2020 NOAA climate normals for the Wfo Brownsville, TX weather station, 19 km away (elevation 16 ft (5 m)).
Frost dates near Olmito
- Brownsville Jan 9 · Jan 4
- San Benito Jan 9 · Jan 3
- Los Fresnos Jan 8 · Jan 4
- Lozano Jan 8 · Dec 29
- Los Indios Jan 9 · Jan 3
- Rio Hondo Jan 8 · Dec 29
- Port Isabel Jan 3 · Jan 1
- Harlingen Jan 9 · Jan 3
- Combes Jan 9 · Jan 3
- Santa Maria Jan 8 · Dec 31
Frequently asked questions
When is the last frost in Olmito, TX?
The median last spring frost in Olmito, TX is January 9. There is still about a 10% chance of frost after March 1, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Olmito, TX?
The median first fall frost is January 4, with about a 10% chance of frost before December 9.
How long is the growing season in Olmito, TX?
About 360 days between the median last spring frost and first fall frost.
What planting zone is Olmito, TX?
Olmito, TX is in USDA hardiness zone 10a.