South Fork Reservoir Weather Forecast

    • 64
    • 88

    Increasing Clouds

    • 62
    • 92

    Chance Rain Showers

    • 56
    • 84

    Mostly Sunny

    • 55
    • 83

    Mostly Sunny

    • 59
    • 88

    Partly Sunny

    • 58
    • 89

    Slight Chance Thunderstorms

Today 22 Aug Prairie

Mostly sunny. Highs around 90. East wind 10 to 15 Mph.

Tonight 22 Aug Prairie

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the mid 60s. East wind 10 to 15 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Fork Reservoir Temperature Statistics

August Temperature

Miles City, Frank Wiley Field Airport (32.9 miles)

  • Lowest 4 August, 2026

    42.7 °F

  • Average August

    72.6 °F

  • Highest 1 August, 2026

    106.6 °F

Climate (2021–2026)

Miles City, Frank Wiley Field Airport (32.9 miles)

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  • Average Low 2021–2026

    35.8 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    60.1 °F
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