Threemile Reservoir Weather Forecast

    • 36
    • 63

    Rain/Snow

    • 32
    • 51

    Chance Rain/Snow

    • 32
    • 57

    Mostly Sunny

    • 33
    • 56

    Mostly Sunny

    • 35
    • 59

    Slight Chance Rain Showers

    • 36
    • 56

    Chance Rain Showers

    • 36
    • 58

    Chance Rain Showers

Today 21 Apr Harney County

Rain Showers likely with a slight chance of Thunderstorms. Thunderstorms may produce gusty Winds. Chance of rain 60 percent. Highs 59 to 68. Breezy. Southwest Winds 10 to 20 Mph with Gusts to 45 Mph.

Tonight 21 Apr Harney County

Rain Showers this Evening, then rain and snow Showers after midnight. Chance of precipitation 90 percent. No snow accumulation across the lower Elevations, with snow accumulation up to 3 Inches over the Mountains. Lows 33 to 38. Windy. West Winds 15 to 25 Mph. Gusts to 45 Mph this Evening, decreasing to 35 Mph after midnight.

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Threemile Reservoir Temperature Statistics

April Temperature

Rome (53.4 miles)

  • Lowest 17 April, 2026

    18.6 °F

  • Average April

    46.7 °F

  • Highest 6 April, 2026

    76.6 °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

    66.1 °F
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