McKinney Weather Forecast
- 78
- 99
Hot
- 78
- 99
Hot
- 78
- 99
Hot
- 79
- 99
Hot
- 79
- 100
Hot
- 79
- 100
Hot
Today 8 Aug Collin
Sunny. A 20 percent chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the upper 90s. South Winds 5 to 10 Mph.
Tonight 8 Aug Collin
Partly cloudy. Lows in the upper 70s. South Winds 5 to 10 Mph.
McKinney Temperature Statistics
August Temperature
McKinney - McKinney National Airport (3.1 miles)
Lowest 2 August, 2026
67.6 °FAverage August
84.6 °FHighest 4 August, 2026
99.6 °F
Climate (2021–2026)
McKinney - McKinney National Airport (3.1 miles)
Average Low 2021–2026
56.5 °FAverage 2021–2026
67.4 °FAverage High 2021–2026
78.4 °F