Plano, TX Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plano, a city in Collin County, Texas.
Tonight
78°F
Clear
Clear. Low around 78, with temperatures rising to around 80 overnight. Heat index values as high as 98. South wind 5 to 10 mph.
7-day forecast for Plano
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 78°F | Clear | 5 to 10 mph S | 0% |
| Saturday | 99°F | Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 79°F | Mostly Clear | 10 mph S | 0% |
| Sunday | 99°F | Mostly Sunny | 5 to 10 mph S | 9% |
| Sunday Night | 77°F | Chance Showers And Thunderstorms | 5 mph S | 47% |
| Monday | 94°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 mph SW | 47% |
| Monday Night | 75°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph ENE | 18% |
| Tuesday | 93°F | Mostly Sunny | 10 mph NNE | 12% |
| Tuesday Night | 73°F | Partly Cloudy | 5 to 10 mph NE | 5% |
| Wednesday | 93°F | Mostly Sunny | 5 to 10 mph ENE | 7% |
| Wednesday Night | 74°F | Partly Cloudy | 5 to 10 mph ENE | 3% |
| Thursday | 94°F | Mostly Sunny | 5 to 10 mph E | 5% |
| Thursday Night | 73°F | Partly Cloudy | 5 to 10 mph E | 5% |
| Friday | 93°F | Mostly Sunny | 5 to 10 mph E | 6% |
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 Sep 19, 2026.