Threemile Reservoir Weather Forecast

    • 42
    • 69

    Increasing Clouds

    • 42
    • 70

    Chance Rain Showers

    • 31
    • 60

    Rain Showers Likely

    • 25
    • 51

    Mostly Sunny

    • 31
    • 57

    Mostly Sunny

    • 32
    • 61

    Partly Sunny

    • 31
    • 60

    Partly Sunny

Today 20 Oct Harney County

Areas of fog in the morning. Mostly sunny. Highs 56 to 61.

Tonight 20 Oct Harney County

Partly cloudy. Patchy smoke after midnight. Lows 31 to 42. Northeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Threemile Reservoir Temperature Statistics

October Temperature

Rome (53.4 miles)

  • Lowest 13 October, 2026

    19.7 °F

  • Average October

    57.2 °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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