McKinney Weather Forecast
- 36
- 52
Sunny
- 41
- 63
Mostly Sunny
- 52
- 67
Partly Sunny
- 40
- 67
Sunny
- 43
- 63
Mostly Sunny
- 50
- 71
Partly Sunny
- 46
- 71
Partly Sunny
Today 30 Dec Collin
Sunny. Highs in the lower 50s. West Winds around 5 Mph.
Tonight 30 Dec Collin
Clear. Lows in the mid 30s. Southwest Winds around 5 Mph.
McKinney Temperature Statistics
December Temperature
McKinney - McKinney National Airport (3.1 miles)
Lowest 15 December, 2025
23 °FAverage December
52.2 °FHighest 26 December, 2025
84 °F
Climate (2020–Present)
McKinney - McKinney National Airport (3.1 miles)
Average Low 2020–2025
56.1 °FAverage 2020–2025
66.7 °FAverage High 2020–2025
77.5 °F