Grand Lake Weather Forecast

    • 32
    • 66

    Rain Showers Likely

    • 30
    • 58

    Rain Showers Likely

    • 29
    • 59

    Chance Thunderstorms

    • 33
    • 66

    Partly Sunny

    • 34
    • 67

    Slight Chance Thunderstorms

    • 33
    • 64

    Chance Thunderstorms

Today 16 Sep Grand and Summit Counties Below 9000 Feet

Partly cloudy with a slight chance of rain Showers in the Morning, then mostly cloudy with a chance of Thunderstorms in the afternoon. Highs 63 to 69. Chance of rain 40 percent.

Tonight 16 Sep Grand and Summit Counties Below 9000 Feet

Rain Showers likely and chance of Thunderstorms in the Evening, then a chance of rain Showers after midnight. Lows 32 to 38. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Temperature Statistics

September Temperature

Kremmling, Mc Elroy Airfield (31.7 miles)

  • Lowest 1 September, 2025

    33.8 °F

  • Average September

    55.7 °F

  • Highest 10 September, 2025

    82.4 °F

Climate (2020–Present)

Kremmling, Mc Elroy Airfield (31.7 miles)

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  • Average Low 2020–2025

    23.8 °F

  • Average 2020–2025

    39 °F

  • Average High 2020–2025

    55 °F
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