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 in the morning then clearing. Highs in the mid 60s to lower 70s. West Winds around 5 Mph early in the morning becoming Light, then becoming south around 5 Mph early in the afternoon shifting to the southwest.

Tonight 23 Mar Central Siskiyou County

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

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  • Temperature Real-Time

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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