Lewistown Weather Forecast

    • 61
    • 81

    Chance Thunderstorms

    • 64
    • 76

    Rain Showers

    • 63
    • 80

    Chance Thunderstorms

    • 69
    • 85

    Partly Sunny

    • 73
    • 91

    Mostly Sunny

    • 74
    • 94

    Mostly Sunny

Today 25 Jun Logan

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms this Morning, then a chance of Showers and Thunderstorms this afternoon. Highs around 80. Southwest Winds 5 to 10 Mph, becoming west this afternoon. Chance of rain 50 percent.

Tonight 25 Jun Logan

Partly cloudy. A chance of Showers and Thunderstorms in the evening. Lows in the lower 60s. West Winds 5 to 10 Mph. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lewistown Temperature Statistics

June Temperature

Bellefontaine Regional Airport (4.3 miles)

  • Lowest 5 June, 2026

    64.4 °F

  • Average June

    74.9 °F

  • Highest 9 June, 2026

    89.6 °F

Climate (2021–2026)

Bellefontaine Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    47.1 °F

  • Average 2021–2026

    55.7 °F

  • Average High 2021–2026

    64.4 °F
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