Mancos State Park Weather Forecast

    • 40
    • 73

    Isolated Thunderstorms

    • 36
    • 72

    Mostly Sunny

    • 39
    • 72

    Mostly Sunny

    • 41
    • 72

    Slight Chance Thunderstorms

    • 41
    • 72

    Slight Chance Thunderstorms

    • 41
    • 72

    Slight Chance Thunderstorms

Today 16 Sep Southwest San Juan Mountains

Mostly sunny with a slight chance of Showers and Thunderstorms in the Morning, then partly sunny with a chance of Showers and Thunderstorms in the afternoon. Highs 55 to 65. Southwest Winds 10 to 15 Mph with Gusts up to 20 Mph in the afternoon. Chance of rain 40 percent.

Tonight 16 Sep Southwest San Juan Mountains

Mostly clear. Lows 35 to 45.

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Mancos State Park Temperature Statistics

September Temperature

Cortez-Montezuma County Airport (19.9 miles)

  • Lowest 7 September, 2025

    45 °F

  • Average September

    66.3 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Cortez-Montezuma County Airport (19.9 miles)

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  • Average Low 2020–2025

    34.2 °F

  • Average 2020–2025

    50.9 °F

  • Average High 2020–2025

    66.8 °F
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