Grizzly Flat Recreation Area Weather Forecast

    • 61
    • 92

    Increasing Clouds

    • 61
    • 88

    Partly Sunny

    • 61
    • 91

    Mostly Sunny

    • 61
    • 90

    Sunny

    • 63
    • 91

    Mostly Sunny

    • 62
    • 92

    Mostly Sunny

Today 19 Sep Central Glenn County Including Interstate 5

Sunny. Highs around 92. North Winds up to 10 Mph.

Tonight 19 Sep Central Glenn County Including Interstate 5

Mostly clear in the evening then becoming mostly cloudy. Lows 58 to 64. Light Winds.

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Grizzly Flat Recreation Area Temperature Statistics

September Temperature

Red Bluff, Red Bluff Municipal Airport (26.7 miles)

  • Lowest 6 September, 2026

    52.6 °F

  • Average September

    72 °F

  • Highest 9 September, 2026

    103.6 °F

Climate (2021–2026)

Red Bluff, Red Bluff Municipal Airport (26.7 miles)

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  • Average Low 2021–2026

    52.7 °F

  • Average 2021–2026

    64.8 °F

  • Average High 2021–2026

    77.6 °F
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