Barstow Weather Forecast

    • 47
    • 67

    Sunny

    • 49
    • 66

    Mostly Cloudy

    • 49
    • 72

    Mostly Sunny

    • 49
    • 76

    Partly Sunny

    • 50
    • 68

    Mostly Cloudy

    • 56
    • 70

    Chance Rain Showers

Today 27 Oct St. Marys

Sunny. Highs in the upper 60s. Northeast Winds 5 to 10 Mph.

Tonight 27 Oct St. Marys

Mostly clear. Patchy fog. Lows in the upper 40s. East Winds around 5 Mph.

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Barstow Temperature Statistics

October Temperature

St Marys County Airport (14.9 miles)

  • Lowest 19 October, 2026

    38.1 °F

  • Average October

    61 °F

  • Highest 14 October, 2026

    89.8 °F

Climate (2021–2026)

St Marys County Airport (14.9 miles)

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  • Average Low 2021–2026

    49.4 °F

  • Average 2021–2026

    58.1 °F

  • Average High 2021–2026

    66.9 °F
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