Twitchell Reservoir Weather Forecast

    • 45
    • 74

    Sunny

    • 45
    • 74

    Sunny

    • 45
    • 75

    Sunny

    • 47
    • 76

    Sunny

    • 47
    • 78

    Sunny

    • 46
    • 77

    Sunny

Today 6 Dec Santa Barbara County Interior Mountains

Sunny. Highs from the upper 60s to mid 70s at low Elevations to the upper 50s to mid 60s at high Elevations. North Winds around 15 Mph in the afternoon.

Tonight 6 Dec Santa Barbara County Interior Mountains

Clear. Lows in the upper 40s to mid 50s except around 40 Colder Valleys and Slopes. Northeast Winds 15 to 25 Mph.

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Twitchell Reservoir Temperature Statistics

December Temperature

Santa Maria Public Airport/Capt G Allan Hancock Field (9.3 miles)

  • Lowest 4 December, 2025

    37.9 °F

  • Average December

    52.3 °F

  • Highest 2 December, 2025

    66.9 °F

Climate (2020–Present)

Santa Maria Public Airport/Capt G Allan Hancock Field (9.3 miles)

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  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    56.7 °F

  • Average High 2020–2025

    68.8 °F
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