Twitchell Reservoir Weather Forecast

    • 55
    • 80

    Chance Rain Showers

    • 55
    • 73

    Rain Showers Likely

    • 55
    • 73

    Chance Rain Showers

    • 54
    • 75

    Partly Sunny

    • 57
    • 79

    Patchy Fog

    • 57
    • 83

    Slight Chance Rain Showers

    • 54
    • 79

    Slight Chance Rain Showers

Today 17 Sep Santa Barbara County Interior Mountains

Partly cloudy. A slight chance of Showers in the afternoon. Highs in the mid 80s to mid 90s. West Winds around 15 Mph in the afternoon.

Tonight 17 Sep Santa Barbara County Interior Mountains

Cloudy. A slight chance of Showers in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Lows in the mid 60s to mid 70s except around 60 Colder Valleys and Slopes. West Winds around 15 Mph shifting to the east 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 7 September, 2025

    48.9 °F

  • Average September

    64.3 °F

  • Highest 1 September, 2025

    84 °F

Climate (2020–Present)

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

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  • Average Low 2020–2025

    47.9 °F

  • Average 2020–2025

    56.7 °F

  • Average High 2020–2025

    68.9 °F
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