McKinney, TX Weather & Growing Conditions
Today
72°F
Mostly Sunny
Mostly sunny. High near 72, with temperatures falling to around 70 in the afternoon. Northwest wind 0 to 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Tonight | 52°F | Patchy Fog | 0 mph | 0% |
| Thursday | 75°F | Sunny | 5 to 10 mph S | 0% |
| Thursday Night | 52°F | Partly Cloudy | 5 to 10 mph N | 3% |
| Friday | 69°F | Sunny | 10 to 15 mph N | 0% |
| Friday Night | 46°F | Partly Cloudy | 5 to 10 mph N | 0% |
| Saturday | 66°F | Mostly Sunny | 5 mph NNE | 2% |
| Saturday Night | 45°F | Slight Chance Rain Showers | 0 to 5 mph NNE | 15% |
| Sunday | 66°F | Mostly Sunny | 5 mph N | 3% |
| Sunday Night | 44°F | Mostly Clear | 0 mph | 1% |
| Monday | 69°F | Sunny | 0 to 5 mph S | 2% |
| Monday Night | 46°F | Mostly Clear | 0 mph | 1% |
| Tuesday | 72°F | Sunny | 0 to 5 mph S | 2% |
| Tuesday Night | 50°F | Partly Cloudy | 0 to 5 mph SSE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for McKinney, TX
Last spring frost
Mar 18
First fall frost
Nov 11
Growing season
239 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 Muni Ap, Tx (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.