Threemile Reservoir Weather Forecast

    • 66
    • 90

    Slight Chance Thunderstorms

    • 62
    • 89

    Slight Chance Thunderstorms

    • 60
    • 95

    Mostly Sunny

    • 60
    • 97

    Sunny

    • 59
    • 94

    Mostly Sunny

    • 58
    • 93

    Mostly Sunny

Today 21 Jul Harney County

Partly sunny. Smoke this Morning, then Areas of smoke this afternoon. A slight chance of Showers and Thunderstorms this afternoon. Chance of rain 20 percent. Highs 82 to 93. West Winds 10 to 15 Mph.

Tonight 21 Jul Harney County

Mostly cloudy. Areas of smoke. Lows 61 to 66. Northwest Winds 10 to 15 Mph.

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Threemile Reservoir Temperature Statistics

July Temperature

Rome (53.4 miles)

  • Lowest 2 July, 2026

    43.6 °F

  • Average July

    75.6 °F

  • Highest 11 July, 2026

    102.7 °F

Climate (2021–2026)

Rome (53.4 miles)

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  • Average Low 2021–2026

    36.5 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    66.1 °F
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