Thornhill Weather Forecast

    • 68
    • 88

    Mostly Sunny

    • 67
    • 86

    Chance Thunderstorms

    • 61
    • 87

    Slight Chance Thunderstorms

    • 62
    • 83

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 56
    • 80

    Mostly Sunny

    • 60
    • 81

    Partly Sunny

Today 22 Aug Marion

Sunny. Near steady temperature in the mid 80s. North Winds around 5 Mph.

Tonight 22 Aug Marion

Mostly clear. Patchy fog after midnight. Lows in the upper 60s. North Winds around 5 Mph this Evening, becoming light and variable.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thornhill Temperature Statistics

August Temperature

Haleyville, Posey Field Airport (8.7 miles)

  • Lowest 3 August, 2025

    66 °F

  • Average August

    76.7 °F

  • Highest 19 August, 2025

    96.1 °F

Climate (2020–Present)

Haleyville, Posey Field Airport (8.7 miles)

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  • Average Low 2020–2025

    50.8 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    71.6 °F
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