McKinney, TX Weather & Growing Conditions
This Afternoon
73°F
Mostly Sunny
Mostly sunny. High near 73, with temperatures falling to around 69 in the afternoon. Northwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 73°F | Mostly Sunny | 15 mph NW | 0% |
| Tonight | 50°F | Mostly Clear | 5 to 10 mph NW | 0% |
| Wednesday | 71°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Wednesday Night | 50°F | Patchy Fog | 0 mph | 0% |
| Thursday | 75°F | Mostly Sunny | 5 to 10 mph SSW | 12% |
| Thursday Night | 49°F | Partly Cloudy | 5 to 10 mph NNW | 13% |
| Friday | 69°F | Sunny | 5 to 10 mph N | 0% |
| Friday Night | 45°F | Mostly Clear | 5 mph N | 0% |
| Saturday | 67°F | Mostly Sunny | 5 mph N | 1% |
| Saturday Night | 44°F | Partly Cloudy | 0 to 5 mph N | 4% |
| Sunday | 69°F | Sunny | 0 to 5 mph NNW | 2% |
| Sunday Night | 43°F | Clear | 0 to 5 mph E | 1% |
| Monday | 71°F | Sunny | 0 to 5 mph SSW | 1% |
| Monday Night | 47°F | Mostly Clear | 0 to 5 mph S | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McKinney, TX
Last spring frost
Mar 17
First fall frost
Nov 15
Growing season
241 days
Hardiness zone
8b
Explore more for McKinney, TX: full frost dates · planting calendar · Texas frost dates
Climate data from the nearest NOAA station, Mckinney Municipal Airport, Tx (4.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.