Threemile Reservoir Weather Forecast

    • 40
    • 70

    Breezy

    • 33
    • 58

    Slight Chance Snow Showers

    • 33
    • 55

    Breezy

    • 34
    • 64

    Partly Sunny

    • 39
    • 70

    Mostly Sunny

    • 43
    • 76

    Mostly Sunny

    • 45
    • 80

    Mostly Sunny

Today 15 May Harney County

Sunny. Highs 62 to 69. West Winds 10 to 15 Mph with Gusts to 25 Mph.

Tonight 15 May Harney County

Mostly cloudy. Lows 31 to 39. Breezy. Northwest Winds 10 to 20 Mph with Gusts to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Threemile Reservoir Temperature Statistics

May Temperature

Rome (53.4 miles)

  • Lowest 1 May, 2026

    30.7 °F

  • Average May

    62.1 °F

  • Highest 12 May, 2026

    95.6 °F

Climate (2021–Present)

Rome (53.4 miles)

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  • Average Low 2021–2026

    36.8 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    66.2 °F
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