Highline Lake State Park Weather Forecast

    • 59
    • 94

    Rain Showers

    • 57
    • 82

    Rain Showers Likely

    • 57
    • 81

    Rain Showers Likely

    • 58
    • 80

    Chance Rain Showers

    • 55
    • 78

    Chance Thunderstorms

    • 52
    • 79

    Slight Chance Thunderstorms

    • 52
    • 80

    Mostly Sunny

Today 13 Sep Grand Valley

Partly sunny with a chance of Showers and Thunderstorms. Highs in the 80s. Chance of rain 50 percent.

Tonight 13 Sep Grand Valley

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then Showers likely with a chance of Thunderstorms after midnight. Lows 55 to 65. Southeast Winds 10 to 15 Mph with Gusts up to 20 Mph. Chance of rain 60 percent.

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  • Temperature Real-Time

Highline Lake State Park Temperature Statistics

September Temperature

Grand Junction Regional Airport (18.6 miles)

  • Lowest 1 September, 2026

    55.7 °F

  • Average September

    74.7 °F

  • Highest 4 September, 2026

    91.7 °F

Climate (2021–2026)

Grand Junction Regional Airport (18.6 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    56.3 °F

  • Average High 2021–2026

    69.2 °F
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