Grassy Lake Weather Forecast

    • 39
    • 61

    Mostly Sunny

    • 43
    • 63

    Partly Sunny

    • 41
    • 61

    Chance Thunderstorms

    • 41
    • 62

    Chance Rain Showers

    • 40
    • 59

    Chance Rain Showers

    • 40
    • 58

    Chance Rain Showers

    • 37
    • 56

    Chance Rain Showers

Today 5 Sep Wind River Mountains East

Mostly sunny. Areas of smoke. Near steady temperature in the mid 50s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

Tonight 5 Sep Wind River Mountains East

Clear. Areas of smoke. Lows in the upper 30s. East Winds around 10 Mph with Gusts up to 20 Mph, becoming southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grassy Lake Temperature Statistics

September Temperature

Dubois Municipal Airport (23.6 miles)

  • Lowest 1 September, 2025

    42.8 °F

  • Average September

    63.2 °F

  • Highest 2 September, 2025

    82.4 °F

Climate (2020–Present)

Dubois Municipal Airport (23.6 miles)

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  • Average Low 2020–2025

    29.6 °F

  • Average 2020–2025

    40.6 °F

  • Average High 2020–2025

    52.5 °F
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