Lewisville, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lewisville, a city in Denton County, Texas.
Today
102°F
Sunny
Sunny, with a high near 102. Heat index values as high as 103. South wind 5 to 10 mph.
7-day forecast for Lewisville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 102°F | Sunny | 5 to 10 mph S | 0% |
| Tonight | 82°F | Mostly Clear | 5 to 10 mph SSE | 0% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 1% |
| Wednesday Night | 81°F | Mostly Clear | 10 mph S | 0% |
| Thursday | 101°F | Sunny | 5 to 10 mph S | 1% |
| Thursday Night | 81°F | Mostly Clear | 10 mph SSE | 1% |
| Friday | 99°F | Sunny | 5 to 10 mph S | 8% |
| Friday Night | 80°F | Mostly Clear | 5 to 10 mph SSE | 8% |
| Saturday | 98°F | Sunny | 5 to 10 mph S | 6% |
| Saturday Night | 79°F | Mostly Clear | 5 to 10 mph SSE | 6% |
| Sunday | 99°F | Sunny | 5 to 10 mph S | 4% |
| Sunday Night | 79°F | Mostly Clear | 10 mph SSE | 3% |
| Monday | 99°F | Sunny | 10 mph S | 3% |
| Monday Night | 80°F | Mostly Clear | 10 mph S | 3% |
Forecast source: National Weather Service (api.weather.gov) for Lewisville (33.051, -96.975). Updated through the day.
Growing snapshot for Lewisville
Last spring frost
Mar 14
First fall frost
Nov 17
Growing season
249 days
Hardiness zone
8b
More local growing data for Lewisville: nearby ZIP 75057 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Grapevine Dam, Tx (8.4 mi from Lewisville). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.