Mays Reservoir Weather Forecast

    • 65
    • 94

    Slight Chance Thunderstorms

    • 64
    • 94

    Chance Rain Showers

    • 54
    • 86

    Mostly Sunny

    • 54
    • 81

    Mostly Sunny

    • 54
    • 82

    Mostly Sunny

    • 54
    • 83

    Mostly Sunny

    • 56
    • 85

    Mostly Sunny

Today 30 Jun John Day Basin

Sunny. Highs in the 90s. Light Wind, becoming north 5 to 10 Mph in the afternoon.

Tonight 30 Jun John Day Basin

Partly cloudy. Lows in the lower to mid 60s. North wind 5 to 10 Mph in the Evening, becoming light.

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  • Temperature Real-Time

Mays Reservoir Temperature Statistics

June Temperature

Prineville Airport (37.3 miles)

  • Lowest 1 June, 2025

    32 °F

  • Average June

    62.3 °F

  • Highest 9 June, 2025

    95 °F

Climate (2020–Present)

Prineville Airport (37.3 miles)

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  • Average Low 2020–2025

    34 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    62.7 °F
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