McKinney Weather Forecast
- 69
- 85
Chance Thunderstorms
- 67
- 87
Slight Chance Thunderstorms
- 67
- 90
Mostly Sunny
- 69
- 94
Mostly Sunny
- 67
- 93
Chance Rain Showers
- 68
- 88
Slight Chance Thunderstorms
Today 1 Sep Collin
Mostly sunny with a 40 percent chance of Showers and Thunderstorms. Highs in the mid 80s. Northeast Winds around 5 Mph.
Tonight 1 Sep Collin
Mostly clear. Lows in the upper 60s. East Winds around 5 Mph in the Evening, becoming light and variable.
McKinney Temperature Statistics
September Temperature
McKinney - McKinney National Airport (3.1 miles)
Lowest
–Average September
–Highest
–
Climate (2020–Present)
McKinney - McKinney National Airport (3.1 miles)
Average Low 2020–2025
55.7 °FAverage 2020–2025
66.4 °FAverage High 2020–2025
77.2 °F