St Mary's Weather Forecast

    • 20
    • 34

    Breezy

    • 23
    • 40

    Breezy

    • 24
    • 38

    Snow Showers Likely

    • 23
    • 34

    Snow Showers

    • 21
    • 33

    Snow Showers

    • 22
    • 35

    Chance Snow Showers

    • 24
    • 36

    Snow Showers

Today 23 Apr South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Partly cloudy with a 20 percent chance of snow Showers. Windy. Highs 32 to 42. West Winds 20 to 30 Mph with Gusts up to 40 Mph.

Tonight 23 Apr South and Southeast Grand/West Central and Southwest Boulder/Gilpin/Clear Creek/Summit/North and Wes

Mostly clear. Lows 17 to 27. West Winds 10 to 20 Mph. Gusts up to 35 Mph in the evening.

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St Mary's Temperature Statistics

April Temperature

Boulder Municipal Airport (26.7 miles)

  • Lowest 4 April, 2026

    30.2 °F

  • Average April

    52.7 °F

  • Highest 12 April, 2026

    77 °F

Climate (2021–Present)

Boulder Municipal Airport (26.7 miles)

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  • Average Low 2021–2026

    41.2 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    66.1 °F
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