Greenhorn Reservoir Weather Forecast

    • 57
    • 93

    Sunny

    • 57
    • 94

    Sunny

    • 57
    • 93

    Sunny

    • 58
    • 93

    Partly Sunny

    • 60
    • 94

    Partly Sunny

    • 61
    • 95

    Mostly Sunny

Today 8 Jul Central Siskiyou County

Sunny. Highs in the mid 80s to mid 90s. North Winds 10 to 15 Mph.

Tonight 8 Jul Central Siskiyou County

Clear. Lows in the mid 50s. North Winds 10 to 20 Mph shifting to the northwest 5 to 10 Mph after midnight.

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  • Temperature Real-Time

Greenhorn Reservoir Temperature Statistics

July Temperature

Montague Siskiyou County Airport (9.9 miles)

  • Lowest 1 July, 2026

    40.6 °F

  • Average July

    71.5 °F

  • Highest 4 July, 2026

    96.7 °F

Climate (2021–2026)

Montague Siskiyou County Airport (9.9 miles)

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  • Average Low 2021–2026

    39.5 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    69.1 °F
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