McKinney Weather Forecast
- 81
- 100
Hot
- 81
- 101
Hot
- 81
- 102
Hot
- 82
- 104
Hot
- 82
- 104
Hot
- 83
- 104
Hot
Today 25 Jul Collin
Mostly sunny. Hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 108 in the afternoon.
Tonight 25 Jul Collin
Partly cloudy. Lows in the upper 70s. South Winds around 10 Mph.
McKinney Temperature Statistics
July Temperature
McKinney - McKinney National Airport (3.1 miles)
Lowest 5 July, 2026
71.7 °FAverage July
85.5 °FHighest 21 July, 2026
102.7 °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