Twitchell Reservoir Weather Forecast

    • 50
    • 76

    Increasing Clouds

    • 50
    • 72

    Becoming Sunny

    • 45
    • 74

    Mostly Sunny

    • 45
    • 69

    Partly Sunny

    • 50
    • 69

    Mostly Cloudy

    • 48
    • 66

    Cloudy

    • 47
    • 65

    Mostly Cloudy

Today 16 Dec Santa Barbara County Interior Mountains

Sunny. Highs from the mid 70s to lower 80s at low Elevations to the mid 60s to lower 70s at high Elevations. Northeast Winds around 15 Mph.

Tonight 16 Dec Santa Barbara County Interior Mountains

Mostly clear in the evening then partly cloudy. Lows in the 50s to around 60 except the upper 30s to mid 40s Colder Valleys and Slopes. Northeast Winds 15 to 25 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

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

    54.6 °F

  • Highest 9 December, 2025

    81 °F

Climate (2020–Present)

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

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    48 °F

  • Average 2020–2025

    56.7 °F

  • Average High 2020–2025

    68.8 °F
Get WillyWeather+ to remove ads