Preston Weather Forecast
- 75
- 92
Mostly Sunny
- 76
- 90
Partly Sunny
- 69
- 89
Rain Showers Likely
- 67
- 74
Rain Showers Likely
- 69
- 77
Chance Thunderstorms
- 70
- 81
Chance Thunderstorms
Today 23 Aug Grayson
Sunny. Highs in the mid 90s. North Winds around 5 Mph.
Tonight 23 Aug Grayson
Mostly clear. Lows in the lower 70s. Northeast Winds around 5 Mph.
Preston Temperature Statistics
August Temperature
Sherman/Denison, Grayson County Airport (11.2 miles)
Lowest 4 August, 2025
67.1 °FAverage August
82.3 °FHighest 8 August, 2025
98.6 °F
Climate (2020–Present)
Sherman/Denison, Grayson County Airport (11.2 miles)
Average Low 2020–2025
55.2 °FAverage 2020–2025
63.9 °FAverage High 2020–2025
76.1 °F