Threemile Reservoir Weather Forecast

    • 31
    • 50

    Becoming Sunny

    • 34
    • 54

    Mostly Cloudy

    • 32
    • 53

    Mostly Cloudy

    • 29
    • 49

    Mostly Cloudy

    • 27
    • 45

    Partly Sunny

    • 32
    • 48

    Partly Sunny

Today 28 Oct Harney County

Widespread frost with Areas of fog in the morning. Sunny. Highs 46 to 51. Southwest Winds 10 to 15 Mph.

Tonight 28 Oct Harney County

Mostly clear. Widespread frost with patchy fog after midnight. Lows 17 to 30. West Winds up to 10 Mph.

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Threemile Reservoir Temperature Statistics

October Temperature

Rome (53.4 miles)

  • Lowest 13 October, 2026

    19.7 °F

  • Average October

    54.8 °F

  • Highest 4 October, 2026

    91.7 °F

Climate (2021–2026)

Rome (53.4 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    66.3 °F
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