St Mary's Weather Forecast

    • 15
    • 21

    Mostly Sunny

    • 26
    • 37

    Breezy

    • 25
    • 36

    Mostly Sunny

    • 25
    • 32

    Breezy

    • 31
    • 34

    Breezy

    • 32
    • 43

    Breezy

    • 33
    • 44

    Mostly Sunny

Today 28 Oct South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly sunny. Highs 24 to 34. Northwest Winds 10 to 20 Mph with Gusts up to 30 Mph.

Tonight 28 Oct South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly clear. Lows 10 to 20. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph in the Evening, becoming light.

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St Mary's Temperature Statistics

October Temperature

Boulder Municipal Airport (26.7 miles)

  • Lowest 19 October, 2025

    32 °F

  • Average October

    56.3 °F

  • Highest 3 October, 2025

    86 °F

Climate (2020–Present)

Boulder Municipal Airport (26.7 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    52.7 °F

  • Average High 2020–2025

    65.1 °F
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