Mays Reservoir Weather Forecast

    • 44
    • 75

    Partly Sunny

    • 37
    • 64

    Partly Sunny

    • 38
    • 62

    Partly Sunny

    • 36
    • 58

    Partly Sunny

    • 35
    • 55

    Slight Chance Rain Showers

    • 36
    • 58

    Mostly Sunny

Today 16 Oct John Day Basin

Sunny. Highs in the mid 70s to lower 80s. Southeast wind 5 to 10 Mph with Gusts to around 20 Mph.

Tonight 16 Oct John Day Basin

Partly cloudy. Lows in the lower to mid 40s. Southeast wind 5 to 15 Mph. Gusts up to 25 Mph overnight.

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  • Temperature Real-Time

Mays Reservoir Temperature Statistics

October Temperature

Prineville Airport (37.3 miles)

  • Lowest 11 October, 2026

    17.6 °F

  • Average October

    53.4 °F

  • Highest 4 October, 2026

    86 °F

Climate (2021–2026)

Prineville Airport (37.3 miles)

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  • Average Low 2021–2026

    34.6 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    63 °F
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