Threemile Reservoir Weather Forecast

    • 43
    • 69

    Chance Rain Showers

    • 46
    • 70

    Chance Rain Showers

    • 43
    • 64

    Rain Showers

    • 34
    • 59

    Rain Showers

    • 33
    • 51

    Rain/Snow Likely

    • 33
    • 52

    Chance Rain/Snow

Today 8 Apr Harney County

Mostly sunny. Highs 64 to 70. West Winds up to 10 Mph.

Tonight 8 Apr Harney County

Partly cloudy. A chance of rain Showers with a slight chance of Thunderstorms in the evening. Chance of rain 30 percent. Lows 35 to 43. Northwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Threemile Reservoir Temperature Statistics

April Temperature

Rome (53.4 miles)

  • Lowest 3 April, 2026

    19.7 °F

  • Average April

    45.7 °F

  • Highest 6 April, 2026

    75.9 °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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