Simerson Weather Forecast

    • 41
    • 56

    Rain

    • 44
    • 53

    Rain

    • 42
    • 56

    Rain

    • 39
    • 53

    Rain Likely

    • 37
    • 50

    Rain

    • 39
    • 51

    Rain

Today 19 Dec Northwestern Mendocino Interior

Rain. Rain may be heavy at Times in the morning. Highs 51 to 61. At higher Elevation, southwest wind up to 25 Mph in the morning.

Tonight 19 Dec Northwestern Mendocino Interior

Cloudy. Slight chance of rain in the Evening, then chance of rain overnight. Patchy dense valley fog overnight. Lows 36 to 46.

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Simerson Temperature Statistics

December Temperature

Ukiah Municipal Airport (21.7 miles)

  • Lowest 13 December, 2025

    30 °F

  • Average December

    47.9 °F

  • Highest 10 December, 2025

    72 °F

Climate (2020–Present)

Ukiah Municipal Airport (21.7 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    60.7 °F

  • Average High 2020–2025

    76 °F
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