Lewistown Weather Forecast

    • 37
    • 55

    Chance Rain Showers

    • 37
    • 53

    Chance Thunderstorms

    • 37
    • 55

    Partly Sunny

    • 37
    • 60

    Chance Rain Showers

    • 36
    • 55

    Slight Chance Rain Showers

    • 34
    • 50

    Chance Rain Showers

    • 35
    • 52

    Chance Rain Showers

Today 23 Sep Fergus

Partly cloudy. Isolated Thunderstorms early in the evening. Scattered rain Showers early in the Evening, then isolated rain Showers after midnight. Lows around 40. West Winds up to 10 Mph. Chance of precipitation 50 percent.

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Lewistown Temperature Statistics

September Temperature

Lewistown, Lewistown Municipal Airport (1.2 miles)

  • Lowest 14 September, 2018

    37.9 °F
  • Average September

    53.8 °F
  • Highest 10 September, 2018

    82 °F

Climate (2010–Present)

Lewistown, Lewistown Municipal Airport (1.2 miles)

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  • Average Low 2010–Present

    33.5 °F
  • Average 2010–Present

    45.3 °F
  • Average High 2010–Present

    56.6 °F
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