Round Mountain Airport Weather Forecast

    • 47
    • 65

    Partly Sunny

    • 46
    • 66

    Mostly Cloudy

    • 32
    • 56

    Partly Sunny

    • 37
    • 59

    Mostly Sunny

    • 44
    • 67

    Partly Sunny

    • 44
    • 68

    Mostly Sunny

Today 23 Mar Central Siskiyou County

Mostly cloudy early this morning then becoming partly cloudy. Areas of frost early this morning. Highs in the mid 60s to mid 70s. Northwest Winds around 5 Mph shifting to the southwest in the late morning and afternoon.

Tonight 23 Mar Central Siskiyou County

Mostly cloudy in the evening then becoming partly cloudy. Lows in the mid 40s. Southwest Winds 5 to 10 Mph.

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Round Mountain Airport Temperature Statistics

March Temperature

Montague Siskiyou County Airport (20.5 miles)

  • Lowest 11 March, 2026

    24.7 °F

  • Average March

    48.4 °F

  • Highest 18 March, 2026

    81.6 °F

Climate (2021–Present)

Montague Siskiyou County Airport (20.5 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    54.3 °F

  • Average High 2021–2026

    69.2 °F
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