Grassy Lake Weather Forecast

    • 36
    • 73

    Chance Thunderstorms

    • 34
    • 67

    Chance Thunderstorms

    • 30
    • 65

    Chance Thunderstorms

    • 29
    • 62

    Rain Showers Likely

    • 33
    • 65

    Partly Sunny

    • 34
    • 69

    Slight Chance Thunderstorms

    • 31
    • 67

    Chance Rain Showers

Today 10 Sep Western Uinta Mountains

Sunny in the Morning, then partly cloudy with a 20 percent chance of Showers and Thunderstorms in the afternoon. Highs around 70.

Tonight 10 Sep Western Uinta Mountains

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of rain Showers and a slight chance of Thunderstorms after midnight. Lows around 40. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grassy Lake Temperature Statistics

September Temperature

Evanston, Evanston-Uinta County Burns Field (24.2 miles)

  • Lowest 7 September, 2025

    46.9 °F

  • Average September

    64.2 °F

  • Highest 2 September, 2025

    82.9 °F

Climate (2020–Present)

Evanston, Evanston-Uinta County Burns Field (24.2 miles)

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  • Average Low 2020–2025

    33.5 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    55.4 °F
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