Owyhee Reservoir State Airport Weather Forecast

    • 59
    • 86

    Increasing Clouds

    • 60
    • 87

    Mostly Cloudy

    • 58
    • 86

    Mostly Sunny

    • 52
    • 83

    Mostly Sunny

    • 55
    • 84

    Mostly Sunny

    • 58
    • 87

    Partly Sunny

Today 18 Sep Malheur County

Sunny. Highs 81 to 88. East Winds up to 10 Mph.

Tonight 18 Sep Malheur County

Mostly cloudy. Lows 52 to 60. North Winds up to 10 Mph.

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  • Temperature Real-Time

Owyhee Reservoir State Airport Temperature Statistics

September Temperature

Caldwell - Caldwell Industrial Airport (38.5 miles)

  • Lowest 13 September, 2025

    51.1 °F

  • Average September

    71.6 °F

  • Highest 1 September, 2025

    97 °F

Climate (2020–Present)

Caldwell - Caldwell Industrial Airport (38.5 miles)

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  • Average Low 2020–2025

    41.5 °F

  • Average 2020–2025

    53 °F

  • Average High 2020–2025

    65 °F
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