Madison County Fairgrounds Weather Forecast

    • 50
    • 84

    Slight Chance Thunderstorms

    • 49
    • 87

    Slight Chance Thunderstorms

    • 49
    • 86

    Chance Rain Showers

    • 48
    • 84

    Slight Chance Rain Showers

    • 42
    • 80

    Chance Rain Showers

    • 40
    • 77

    Slight Chance Thunderstorms

    • 43
    • 79

    Mostly Sunny

Today 25 Aug Beaverhead and Western Madison below 6000ft

Mostly sunny. Patchy smoke early in the afternoon. Slight chance of rain Showers early in the Afternoon, then slight chance of Thunderstorms late in the afternoon. Highs 79 to 85. Southwest Winds up to 10 Mph. Chance of precipitation 20 percent.

Tonight 25 Aug Beaverhead and Western Madison below 6000ft

Mostly cloudy. Slight chance of Thunderstorms early in the Evening, then slight chance of rain Showers late in the evening. Lows in the lower 50s. Northeast Winds up to 10 Mph shifting to the south after midnight. Chance of precipitation 20 percent.

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Madison County Fairgrounds Temperature Statistics

August Temperature

Dillon, Dillon Airport (21.7 miles)

  • Lowest 4 August, 2026

    39.7 °F

  • Average August

    67.4 °F

  • Highest 1 August, 2026

    93.7 °F

Climate (2021–2026)

Dillon, Dillon Airport (21.7 miles)

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  • Average Low 2021–2026

    31.5 °F

  • Average 2021–2026

    43.9 °F

  • Average High 2021–2026

    57 °F
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