Marion Weather Forecast

    • 76
    • 93

    Slight Chance Thunderstorms

    • 77
    • 94

    Mostly Sunny

    • 76
    • 94

    Mostly Sunny

    • 76
    • 93

    Slight Chance Thunderstorms

    • 76
    • 92

    Chance Thunderstorms

    • 75
    • 93

    Chance Thunderstorms

Today 22 Jul Williamson

Mostly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Humid with Highs in the lower 90s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 22 Jul Williamson

Partly cloudy in the Evening, then clearing. Humid with Lows in the mid 70s. East Winds around 5 Mph in the Evening, becoming light and variable.

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  • Temperature Real-Time

Marion Temperature Statistics

July Temperature

Marion - Williamson County Regional Airport (4.3 miles)

  • Lowest 2 July, 2025

    64.6 °F

  • Average July

    76.3 °F

  • Highest 5 July, 2025

    91.4 °F

Climate (2020–Present)

Marion - Williamson County Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    47.2 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    67.4 °F
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