Plano, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plano, a city in Collin County, Texas.
Today
100°F
Sunny
Sunny, with a high near 100. Heat index values as high as 102. South wind 5 to 10 mph.
7-day forecast for Plano
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 100°F | Sunny | 5 to 10 mph S | 1% |
| Tonight | 82°F | Mostly Clear | 5 to 10 mph SSE | 1% |
| Wednesday | 101°F | Sunny | 5 to 10 mph SSW | 2% |
| Wednesday Night | 81°F | Mostly Clear | 10 mph S | 1% |
| Thursday | 101°F | Sunny | 10 mph SSW | 1% |
| Thursday Night | 81°F | Mostly Clear | 10 mph SSE | 1% |
| Friday | 97°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 | 8% |
| Saturday Night | 79°F | Mostly Clear | 5 to 10 mph SSE | 8% |
| Sunday | 98°F | Sunny | 5 to 10 mph S | 4% |
| Sunday Night | 80°F | Mostly Clear | 10 mph SSE | 4% |
| Monday | 99°F | Sunny | 10 mph S | 4% |
| Monday Night | 80°F | Mostly Clear | 10 to 15 mph S | 4% |
Forecast source: National Weather Service (api.weather.gov) for Plano (33.051, -96.748). Updated through the day.
Growing snapshot for Plano
Last spring frost
Mar 7
First fall frost
Nov 21
Growing season
259 days
Hardiness zone
8b
More local growing data for Plano: nearby ZIP 75023 weather · frost dates · planting calendar · Texas frost dates
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Climate data from the nearest NOAA station, Richardson, Tx (4.2 mi from Plano). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.