Twitchell Reservoir Weather Forecast

    • 62
    • 89

    Decreasing Clouds

    • 63
    • 98

    Hot

    • 59
    • 85

    Mostly Sunny

    • 54
    • 79

    Mostly Sunny

    • 53
    • 76

    Mostly Sunny

    • 54
    • 78

    Mostly Sunny

Today 8 Sep Santa Barbara County Interior Mountains

Mostly cloudy with a slight chance of Showers and Thunderstorms. Highs from 92 to 100 at low Elevations to the 80s to around 90 at high Elevations.

Tonight 8 Sep Santa Barbara County Interior Mountains

Mostly cloudy. Lows in the upper 60s to mid 70s except around 60 Colder Valleys and Slopes. Northeast Winds around 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Twitchell Reservoir Temperature Statistics

September Temperature

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

  • Lowest 1 September, 2026

    52.6 °F

  • Average September

    65.4 °F

  • Highest 5 September, 2026

    81 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    48.3 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    69.5 °F
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