Lone Mesa State Park Weather Forecast

    • 36
    • 65

    Mostly Sunny

    • 39
    • 64

    Partly Sunny

    • 40
    • 63

    Slight Chance Thunderstorms

    • 40
    • 64

    Slight Chance Thunderstorms

    • 39
    • 66

    Slight Chance Thunderstorms

    • 40
    • 67

    Mostly Sunny

Today 17 Sep Southwest San Juan Mountains

Sunny. Highs 55 to 65. West Winds 10 to 15 Mph with Gusts up to 20 Mph in the afternoon.

Tonight 17 Sep Southwest San Juan Mountains

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

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Lone Mesa State Park Temperature Statistics

September Temperature

Cortez-Montezuma County Airport (31.7 miles)

  • Lowest 14 September, 2025

    37.9 °F

  • Average September

    65.2 °F

  • Highest 2 September, 2025

    87.1 °F

Climate (2020–Present)

Cortez-Montezuma County Airport (31.7 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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