Hamilton Reservoir Weather Forecast

    • 62
    • 88

    Patchy Smoke

    • 61
    • 81

    Partly Sunny

    • 62
    • 78

    Rain Showers Likely

    • 63
    • 77

    Slight Chance Thunderstorms

    • 69
    • 87

    Mostly Sunny

    • 73
    • 94

    Partly Sunny

    • 71
    • 95

    Partly Sunny

Today 21 Jul Caldwell

Sunny. Patchy smoke. Near steady temperature in the mid 80s. North Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 21 Jul Caldwell

Mostly clear. Patchy smoke. Cooler with Lows in the lower 60s. North Winds 10 to 15 Mph, Diminishing to around 5 Mph after midnight.

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Hamilton Reservoir Temperature Statistics

July Temperature

Chillicothe, Chillicothe Agri-Science Center (24.2 miles)

  • Lowest 13 July, 2026

    63.6 °F

  • Average July

    79.6 °F

  • Highest 18 July, 2026

    93.7 °F

Climate (2021–2026)

Chillicothe, Chillicothe Agri-Science Center (24.2 miles)

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  • Average Low 2021–2026

    45.5 °F

  • Average 2021–2026

    56.2 °F

  • Average High 2021–2026

    67.1 °F
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