Highline Lake State Park Weather Forecast

    • 50
    • 81

    Mostly Sunny

    • 53
    • 80

    Mostly Sunny

    • 55
    • 82

    Partly Sunny

    • 56
    • 82

    Mostly Sunny

    • 55
    • 82

    Slight Chance Thunderstorms

    • 55
    • 84

    Mostly Sunny

Today 17 Sep Grand Valley

Mostly clear. Highs 75 to 85.

Tonight 17 Sep Grand Valley

Mostly clear. Lows 45 to 55. North Winds 10 to 15 Mph in the Evening, becoming light.

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Highline Lake State Park Temperature Statistics

September Temperature

Grand Junction Regional Airport (18.6 miles)

  • Lowest 14 September, 2025

    46 °F

  • Average September

    71.6 °F

  • Highest 2 September, 2025

    93 °F

Climate (2020–Present)

Grand Junction Regional Airport (18.6 miles)

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  • Average Low 2020–2025

    43 °F

  • Average 2020–2025

    55.5 °F

  • Average High 2020–2025

    68.4 °F
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