Tatum Lake Weather Forecast
- 51
- 80
Mostly Sunny
- 51
- 77
Mostly Sunny
- 55
- 79
Sunny
- 56
- 81
Mostly Sunny
- 56
- 82
Partly Sunny
- 58
- 82
Partly Sunny
Today 19 Oct Collin
Mostly sunny. Highs around 80.
Tonight 19 Oct Collin
Clear. Lows in the lower 50s. East Winds around 5 Mph.
Tatum Lake Temperature Statistics
October Temperature
McKinney - McKinney National Airport (13.7 miles)
Lowest 17 October, 2026
46 °FAverage October
73.7 °FHighest 13 October, 2026
93.7 °F
Climate (2021–2026)
McKinney - McKinney National Airport (13.7 miles)
Average Low 2021–2026
56.8 °FAverage 2021–2026
67.6 °FAverage High 2021–2026
78.6 °F