Mays Reservoir Weather Forecast

    • 32
    • 43

    Mostly Cloudy

    • 28
    • 43

    Chance Rain

    • 32
    • 43

    Mostly Cloudy

    • 39
    • 48

    Slight Chance Rain

    • 39
    • 52

    Chance Rain

    • 35
    • 49

    Chance Rain

Today 1 Dec John Day Basin

Partly sunny. Highs in the 40s. Light wind.

Tonight 1 Dec John Day Basin

Mostly cloudy with a 20 percent chance of rain. Lows in the lower to mid 30s. Light wind.

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Mays Reservoir Temperature Statistics

December Temperature

Prineville Airport (37.3 miles)

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  • Average December

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Climate (2020–Present)

Prineville Airport (37.3 miles)

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  • Average Low 2020–2025

    34.4 °F

  • Average 2020–2025

    49.4 °F

  • Average High 2020–2025

    62.8 °F
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