Seneca Weather Forecast

    • 30
    • 66

    Partly Sunny

    • 25
    • 69

    Mostly Sunny

    • 27
    • 66

    Mostly Sunny

    • 27
    • 60

    Mostly Cloudy

    • 25
    • 53

    Slight Chance Rain Showers

    • 25
    • 54

    Slight Chance Rain Showers

Today 16 Oct Ochoco-John Day Highlands

Sunny. Highs in the upper 60s to mid 70s. Southeast wind 5 to 15 Mph with Gusts to around 25 Mph.

Tonight 16 Oct Ochoco-John Day Highlands

Partly cloudy. Lows in the lower 30s to lower 40s.

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Seneca Temperature Statistics

October Temperature

Grant County Regional Airport (18 miles)

  • Lowest 13 October, 2026

    25.2 °F

  • Average October

    56.9 °F

  • Highest 4 October, 2026

    88.2 °F

Climate (2021–2026)

Grant County Regional Airport (18 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50.3 °F

  • Average High 2021–2026

    62.1 °F
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