Lavon, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lavon, a city in Collin County, Texas.
This Afternoon
98°F
Sunny
Sunny, with a high near 98. Heat index values as high as 100. South southeast wind around 5 mph.
7-day forecast for Lavon
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 98°F | Sunny | 5 mph SSE | 0% |
| Tonight | 74°F | Clear | 5 mph S | 0% |
| Saturday | 98°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 74°F | Mostly Clear | 5 to 10 mph S | 0% |
| Sunday | 98°F | Mostly Sunny | 5 to 10 mph S | 6% |
| Sunday Night | 74°F | Chance Showers And Thunderstorms | 5 mph S | 41% |
| Monday | 94°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SW | 41% |
| Monday Night | 72°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph NE | 19% |
| Tuesday | 93°F | Mostly Sunny | 5 to 10 mph NNE | 11% |
| Tuesday Night | 70°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 92°F | Mostly Sunny | 5 to 10 mph ENE | 8% |
| Wednesday Night | 70°F | Partly Cloudy | 5 mph ENE | 4% |
| Thursday | 92°F | Sunny | 5 mph ENE | 5% |
| Thursday Night | 70°F | Partly Cloudy | 5 mph ENE | 5% |
Forecast source: National Weather Service (api.weather.gov) for Lavon (33.023, -96.437). Updated through the day.
Growing snapshot for Lavon
Last spring frost
Mar 10
First fall frost
Nov 19
Growing season
254 days
Hardiness zone
8b
More local growing data for Lavon: nearby ZIP 75166 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Lavon Dam, Tx (2.6 mi from Lavon). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.