Lewistown, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Thursday
    Frozen Mix
    37°
    Forecast night icon
    Night
    50% Chance Frozen Mix
    27°
    Thursday 5/2
    Day
    37°
    Frozen Mix
    Forecast day icon
    Night
    27°
    50% Chance Frozen Mix
    Forecast night icon
    Hourly
    Day Details
    Windy colder. Snow showers and rain showers late in the morning then chance of rain showers and snow showers in the afternoon. New snow accumulation up to 3 inches. Highs 35 to 40. Northwest winds 20 to 30 mph. Chance of precipitation near 100 percent.
    Night Details
    Breezy cloudy. Chance of snow showers and rain showers in the evening then chance of snow showers after midnight. Lows around 30. Northwest winds 15 to 25 mph decreasing to 10 to 15 mph after midnight. Chance of precipitation 50 percent.
  • Forecast day icon
    Friday
    50% Chance Frozen Mix
    44°
    Forecast night icon
    Night
    Mostly Clear
    25°
    Friday 5/3
    Day
    44°
    50% Chance Frozen Mix
    Forecast day icon
    Night
    25°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Chance of snow showers in the morning then chance of rain showers and snow showers in the afternoon. Highs 45 to 50. Northwest winds 10 to 20 mph. Chance of precipitation 50 percent.
    Night Details
    Mostly clear. Lows 25 to 30. Northwest winds 5 to 15 mph shifting to the south 5 to 10 mph after midnight.
  • Forecast day icon
    Saturday
    Partly Cloudy
    60°
    Forecast night icon
    Night
    Mostly Cloudy
    36°
    Saturday 5/4
    Day
    60°
    Partly Cloudy
    Forecast day icon
    Night
    36°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Warmer. Sunny in the morning then becoming partly cloudy. Highs 60 to 65. Southeast winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.
    Night Details
    Not as cool. Mostly cloudy. Lows 40 to 45.
  • Forecast day icon
    Sunday
    40% Chance Rain Showers
    64°
    Forecast night icon
    Night
    70% Chance Rain Showers
    39°
    Sunday 5/5
    Day
    64°
    40% Chance Rain Showers
    Forecast day icon
    Night
    39°
    70% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 40 percent chance of rain showers. Highs 65 to 70.
    Night Details
    Windy cooler. Rain showers likely. Lows 40 to 45. Highs 50 to 60. Chance of showers 70 percent.
  • Forecast day icon
    Monday
    70% Chance Rain Showers
    47°
    Forecast night icon
    Night
    50% Chance Rain Showers
    35°
    Monday 5/6
    Day
    47°
    70% Chance Rain Showers
    Forecast day icon
    Night
    35°
    50% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Windy cooler. Rain showers likely. Lows 40 to 45. Highs 50 to 60. Chance of showers 70 percent.
    Night Details
    Windy. Mostly cloudy with a 50 percent chance of rain showers. Lows 35 to 45. Highs 50 to 55.
  • Forecast day icon
    Tuesday
    50% Chance Rain Showers
    45°
    Forecast night icon
    Night
    50% Chance Rain Showers
    32°
    Tuesday 5/7
    Day
    45°
    50% Chance Rain Showers
    Forecast day icon
    Night
    32°
    50% Chance Rain Showers
    Forecast night icon
    Hourly
    Day Details
    Windy. Mostly cloudy with a 50 percent chance of rain showers. Lows 35 to 45. Highs 50 to 55.
    Night Details
    Windy. Mostly cloudy with a 50 percent chance of rain showers. Lows 35 to 45. Highs 50 to 55.
  • Forecast day icon
    Wednesday
    50% Chance Frozen Mix
    41°
    Forecast night icon
    Night
    70% Chance Frozen Mix
    32°
    Wednesday 5/8
    Day
    41°
    50% Chance Frozen Mix
    Forecast day icon
    Night
    32°
    70% Chance Frozen Mix
    Forecast night icon
    Day Details
    Windy. Mostly cloudy with a 50 percent chance of rain showers and snow showers. Highs 50 to 55.
    Night Details
    Mostly cloudy with probable rain-snow mix. Chance of precipitation 65%. Low temperature around 32F. Dew point will be around 35F with an average humidity of 96%. Winds will be 12 mph from the NW.
  • Forecast day icon
    Thursday
    70% Chance Frozen Mix
    45°
    Forecast night icon
    Night
    50% Chance of Rain
    32°
    Thursday 5/9
    Day
    45°
    70% Chance Frozen Mix
    Forecast day icon
    Night
    32°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with probable rain-snow mix. Chance of precipitation 70%. High temperature around 45F. Dew point will be around 37F with an average humidity of 87%. Winds will be 8 mph from the NW.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 32F. Dew point will be around 36F with an average humidity of 94%. Winds will be 5 mph from the W.
  • Forecast day icon
    Friday
    40% Chance of Rain
    51°
    Forecast night icon
    Night
    30% Chance of Rain
    35°
    Friday 5/10
    Day
    51°
    40% Chance of Rain
    Forecast day icon
    Night
    35°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 51F. Dew point will be around 38F with an average humidity of 79%. Winds will be 4 mph from the NW.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 35F. Dew point will be around 38F with an average humidity of 86%. Winds will be 5 mph from the W.
  • Forecast day icon
    Saturday
    30% Chance of Rain
    57°
    Forecast night icon
    Night
    Partly Cloudy
    39°
    Saturday 5/11
    Day
    57°
    30% Chance of Rain
    Forecast day icon
    Night
    39°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. High temperature around 57F. Dew point will be around 39F with an average humidity of 68%. Winds will be 6 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 39F. Dew point will be around 39F with an average humidity of 79%. Winds will be 6 mph from the SW.