Lago Vista, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lago Vista, a community in Starr County, Texas.
Overnight
63°F
Clear
Clear, with a low around 63. North northwest wind around 5 mph.
7-day forecast for Lago Vista
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 5 mph NNW | 0% |
| Wednesday | 84°F | Sunny | 3 mph ENE | 0% |
| Wednesday Night | 65°F | Mostly Clear | 0 to 5 mph ESE | 3% |
| Thursday | 86°F | Mostly Sunny | 0 to 3 mph ESE | 9% |
| Thursday Night | 68°F | Mostly Cloudy then Showers And Thunderstorms Likely | 1 to 8 mph N | 58% |
| Friday | 81°F | Slight Chance Rain Showers then Partly Sunny | 5 to 12 mph NNW | 16% |
| Friday Night | 63°F | Mostly Cloudy | 0 to 3 mph N | 3% |
| Saturday | 77°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph N | 19% |
| Saturday Night | 60°F | Chance Rain Showers | 3 to 10 mph N | 44% |
| Sunday | 72°F | Chance Rain Showers | 7 to 12 mph N | 33% |
| Sunday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 0 to 5 mph NNW | 16% |
| Monday | 75°F | Mostly Sunny | 3 mph N | 5% |
| Monday Night | 56°F | Partly Cloudy | 1 mph ENE | 3% |
| Tuesday | 78°F | Partly Sunny | 3 mph ESE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Lago Vista (26.564, -99.108). Updated through the day.
Growing snapshot for Lago Vista
Last spring frost
Jan 9
First fall frost
Jan 1
Growing season
363 days
Hardiness zone
9b
More local growing data for Lago Vista: nearby ZIP 78545 weather · frost dates · planting calendar · Texas frost dates
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Falcon Heights
Climate data from the nearest NOAA station, Falcon Dam, Tx (1.9 mi from Lago Vista). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.