Heppner Weather Forecast

    • 36
    • 54

    Chance Rain Showers

    • 40
    • 59

    Mostly Sunny

    • 43
    • 66

    Partly Sunny

    • 45
    • 69

    Partly Sunny

    • 48
    • 72

    Mostly Sunny

    • 49
    • 76

    Mostly Sunny

Today 16 May Foothills of the Southern Blue Mountains of Oregon

Mostly cloudy with a chance of rain Showers in the Morning, then partly cloudy with a chance of Showers and Thunderstorms in the afternoon. Highs in the 50s. Windy. West wind 20 to 30 Mph with Gusts to around 45 Mph. Chance of precipitation 20 percent.

Tonight 16 May Foothills of the Southern Blue Mountains of Oregon

Partly cloudy. A 20 percent chance of rain Showers in the evening. Lows in the mid to upper 30s. Windy. West wind 20 to 30 Mph with Gusts to around 45 Mph.

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  • Temperature Real-Time

Heppner Temperature Statistics

May Temperature

Hermiston, Hermiston Municipal Airport (35.4 miles)

  • Lowest 1 May, 2026

    37.7 °F

  • Average May

    64.3 °F

  • Highest 4 May, 2026

    88.6 °F

Climate (2021–Present)

Hermiston, Hermiston Municipal Airport (35.4 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    55.4 °F

  • Average High 2021–2026

    67.7 °F
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