Grassy Lake Weather Forecast

    • 6
    • 22

    Mostly Sunny

    • 4
    • 22

    Partly Sunny

    • 2
    • 21

    Partly Sunny

    • 9
    • 21

    Partly Sunny

    • 21
    • 26

    Slight Chance Snow

    • 25
    • 32

    Mostly Cloudy

    • 19
    • 32

    Mostly Cloudy

Today 23 Jan Madison

Mostly cloudy late in the morning then becoming partly cloudy. Highs 20 to 30. North Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grassy Lake Temperature Statistics

January Temperature

Ennis - Big Sky Airport (11.2 miles)

  • Lowest 9 January, 2021

    5 °F

  • Average January

    27.8 °F

  • Highest 12 January, 2021

    46.4 °F

Climate (2015–Present)

Ennis - Big Sky Airport (11.2 miles)

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  • Average Low 2015–Present

    30.7 °F

  • Average 2015–Present

    42.9 °F

  • Average High 2015–Present

    54.4 °F
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