Thornton Lake Weather Forecast

    • 66
    • 76

    Rain Showers

    • 66
    • 80

    Slight Chance Thunderstorms

    • 65
    • 78

    Chance Thunderstorms

    • 63
    • 78

    Rain Showers Likely

    • 65
    • 82

    Partly Sunny

    • 61
    • 81

    Chance Thunderstorms

Today 12 Apr Fannin

A chance of Thunderstorms. Showers in the Morning, then a chance of Showers in the afternoon. Highs in the upper 70s. South Winds 10 to 15 Mph, increasing to 15 to 20 Mph in the afternoon. Chance of rain 80 percent.

Tonight 12 Apr Fannin

Mostly cloudy. Lows in the mid 60s. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thornton Lake Temperature Statistics

April Temperature

McKinney - McKinney National Airport (21.7 miles)

  • Lowest 6 April, 2026

    43.6 °F

  • Average April

    66.8 °F

  • Highest 1 April, 2026

    85.6 °F

Climate (2021–Present)

McKinney - McKinney National Airport (21.7 miles)

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  • Average Low 2021–2026

    56.3 °F

  • Average 2021–2026

    67.1 °F

  • Average High 2021–2026

    78.1 °F
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