Ruby River Reservoir Weather Forecast

    • 41
    • 77

    Becoming Sunny

    • 48
    • 80

    Mostly Sunny

    • 45
    • 83

    Chance Rain

    • 41
    • 69

    Chance Thunderstorms

    • 40
    • 69

    Chance Rain

    • 35
    • 65

    Chance Rain

Today 11 May Beaverhead and Western Madison below 6000ft

Sunny. Highs 73 to 81. West Winds up to 10 Mph with Gusts to around 30 Mph increasing to 15 to 20 Mph with Gusts to around 40 Mph in the afternoon.

Tonight 11 May Beaverhead and Western Madison below 6000ft

Partly cloudy. Highs 73 to 81. Lows 40 to 49. North Winds up to 20 Mph with Gusts to around 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Ruby River Reservoir Temperature Statistics

May Temperature

Dillon, Dillon Airport (20.5 miles)

  • Lowest 6 May, 2026

    23.6 °F

  • Average May

    51.3 °F

  • Highest 2 May, 2026

    73.7 °F

Climate (2021–Present)

Dillon, Dillon Airport (20.5 miles)

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  • Average Low 2021–2026

    31.5 °F

  • Average 2021–2026

    43.9 °F

  • Average High 2021–2026

    56.9 °F
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