Threemile Reservoir Weather Forecast

    • 50
    • 80

    Mostly Sunny

    • 48
    • 82

    Increasing Clouds

    • 34
    • 67

    Mostly Cloudy

    • 42
    • 65

    Partly Sunny

    • 48
    • 70

    Mostly Cloudy

    • 47
    • 75

    Partly Sunny

    • 30
    • 61

    Partly Sunny

Today 19 Mar Harney County

Sunny. Highs 73 to 79. Southwest Winds 10 to 15 Mph.

Tonight 19 Mar Harney County

Mostly clear. Lows 37 to 49. Southwest Winds 10 to 15 Mph. Gusts to 30 Mph this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Threemile Reservoir Temperature Statistics

March Temperature

Rome (53.4 miles)

  • Lowest 15 March, 2026

    19.9 °F

  • Average March

    45.6 °F

  • Highest 16 March, 2026

    71.1 °F

Climate (2021–Present)

Rome (53.4 miles)

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  • Average Low 2021–2026

    36.7 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    66 °F
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