Johnson Lake Weather Forecast

    • 21
    • 32

    Mostly Sunny

    • 18
    • 31

    Partly Sunny

    • 21
    • 26

    Snow

    • 10
    • 23

    Snow

    • 9
    • 19

    Snow

    • 9
    • 21

    Snow Likely

    • 7
    • 20

    Snow Likely

Today 29 Jan Butte/Blackfoot Region

Mostly sunny. Highs in the 30s.

Tonight 29 Jan Butte/Blackfoot Region

Mostly clear. Lows 3 to 10. Southwest Winds to 15 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Johnson Lake Temperature Statistics

January Temperature

Butte, Bert Mooney Airport (47.2 miles)

  • Lowest 20 January, 2025

    -26.2 °F

  • Average January

    16.6 °F

  • Highest 16 January, 2025

    47.6 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (47.2 miles)

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  • Average Low 2020–2025

    27.7 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    54.7 °F
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