10-Day Weather Forecast - Lewistown, MT

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  • 62|43°F
    Sunny

    Today

    62°F

    Not as cool. Sunny. Highs in the lower 60s. West winds up to 10 mph. Gusts up to 25 mph in the afternoon.

    Tonight

    43°F

    Not as cool. Partly cloudy in the evening then mostly cloudy with a 20 percent chance of thunderstorms after midnight. Lows in the lower 40s. Southwest winds up to 10 mph with gusts to around 25 mph.

    Hourly details
  • Day

    64°F

    Breezy. Mostly cloudy. Chance of rain showers in the morning then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 64 to 70. West winds 10 to 15 mph shifting to the northwest 15 to 25 mph in the afternoon. Chance of precipitation 50 percent.

    Night

    42°F

    Mostly cloudy in the evening then becoming partly cloudy. Lows in the lower 40s. West winds 5 to 15 mph. Gusts up to 35 mph in the evening.

    Hourly details
  • Day

    69°F

    Mostly sunny. Highs 70 to 76. West winds 5 to 15 mph. Gusts up to 30 mph in the afternoon.

    Night

    46°F

    Cloudy. Chance of rain showers and slight chance of thunderstorms in the evening then chance of rain showers after midnight. Lows in the upper 40s. Chance of precipitation 50 percent.

    Hourly details
  • Weekend Weather

  • Day

    62°F

    Cooler. Mostly cloudy. Rain showers in the morning then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs around 60. Chance of precipitation 80 percent.

    Night

    38°F

    Mostly cloudy with a 20 percent chance of rain in the evening then partly cloudy after midnight. Lows around 40.

    Hourly details
  • Day

    78°F

    Warmer sunny. Highs in the lower 70s.

    Night

    46°F

    Partly cloudy. Lows in the upper 40s. Highs in the mid 70s.

    Hourly details
  • Day

    69°F

    Partly cloudy. Lows in the upper 40s. Highs in the mid 70s.

    Night

    45°F

    Partly cloudy. Lows in the upper 40s. Highs in the mid 70s.

    Hourly details
  • Day

    71°F

    Partly cloudy. Lows in the upper 40s. Highs in the mid 70s.

    Night

    44°F

    Clear. Low temperature around 44F. Dew point will be around 37F with an average humidity of 64%. Winds will be 6 mph from the S.

  • Day

    72°F

    Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 72F. Dew point will be around 38F with an average humidity of 41%. Winds will be 7 mph from the W.

    Night

    44°F

    Mostly clear with a slight chance of rain. Chance of precipitation 30%. Low temperature around 44F. Dew point will be around 38F with an average humidity of 61%. Winds will be 4 mph from the S.

  • Day

    73°F

    Mostly sunny. High temperature around 72F. Dew point will be around 38F with an average humidity of 41%. Winds will be 7 mph from the W.

    Night

    44°F

    Mostly clear. Low temperature around 44F. Dew point will be around 39F with an average humidity of 61%. Winds will be 3 mph from the S.

  • Day

    74°F

    Sunny. High temperature around 74F. Dew point will be around 39F with an average humidity of 41%. Winds will be 5 mph from the W.

    Night

    46°F

    Partly cloudy. Low temperature around 46F. Dew point will be around 40F with an average humidity of 61%. Winds will be 4 mph from the S.