Greenhorn Reservoir Weather Forecast

    • 36
    • 53

    Rain

    • 37
    • 46

    Rain

    • 33
    • 45

    Chance Rain/Snow

    • 31
    • 43

    Rain/Snow Likely

    • 27
    • 41

    Rain/Snow Likely

    • 24
    • 40

    Snow Likely

Today 30 Jan Central Siskiyou County

Sunny until early afternoon then becoming mostly cloudy. Highs in the lower to mid 50s. Southeast Winds around 5 Mph shifting to the south this afternoon.

Tonight 30 Jan Central Siskiyou County

Mostly cloudy. Chance of rain in the Evening, then chance of rain and snow after midnight. Snow may be heavy at Times after midnight. Snow level 4500 feet. Lows in the mid 30s. Breezy. In the shasta Valley, south Winds 20 to 30 Mph. Elsewhere, south Winds 20 to 30 Mph decreasing to 15 to 25 Mph after midnight. Chance of precipitation 40 percent.

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Greenhorn Reservoir Temperature Statistics

January Temperature

Montague Siskiyou County Airport (9.9 miles)

  • Lowest 27 January, 2025

    12.9 °F

  • Average January

    36.4 °F

  • Highest 24 January, 2025

    56.6 °F

Climate (2020–Present)

Montague Siskiyou County Airport (9.9 miles)

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  • Average Low 2020–2025

    39.8 °F

  • Average 2020–2025

    54.3 °F

  • Average High 2020–2025

    69.2 °F
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