Sierra City Weather Forecast

    • 57
    • 88

    Increasing Clouds

    • 58
    • 88

    Mostly Cloudy

    • 58
    • 88

    Partly Sunny

    • 59
    • 89

    Mostly Sunny

    • 60
    • 89

    Mostly Sunny

    • 59
    • 88

    Partly Sunny

Today 19 Sep Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80

Sunny, warmer. Highs 76 to 86. East Winds up to 10 Mph in the morning becoming light. Gusts up to 20 Mph.

Tonight 19 Sep Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80

Clear in the evening then becoming mostly cloudy. Lows 53 to 63. Northeast Winds up to 10 Mph.

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Sierra City Temperature Statistics

September Temperature

Emigrant Gap, Blue Canyon Nyack Airport (20.5 miles)

  • Lowest 1 September, 2026

    43.6 °F

  • Average September

    59.4 °F

  • Highest 9 September, 2026

    84.7 °F

Climate (2021–2026)

Emigrant Gap, Blue Canyon Nyack Airport (20.5 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    60.4 °F
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