Lewistown, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
Main Menu
10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    42°
    Saturday 5/4
    Forecast night icon
    42°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy in the evening then becoming mostly cloudy. Lows 35 to 40. East winds 10 to 20 mph with gusts to around 35 mph.
  • Forecast day icon
    Sunday
    Mostly Cloudy
    64°
    Forecast night icon
    Night
    70% Chance of Storms
    44°
    Sunday 5/5
    Day
    64°
    Mostly Cloudy
    Forecast day icon
    Night
    44°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Highs 65 to 70. East winds 10 to 15 mph.
    Night Details
    Rain showers likely and slight chance of thunderstorms in the evening then rain likely and slight chance of thunderstorms after midnight. Lows 40 to 45. Southwest winds 5 to 15 mph. Chance of precipitation 70 percent.
  • Forecast day icon
    Monday
    70% Chance of Rain
    50°
    Forecast night icon
    Night
    70% Chance of Rain
    37°
    Monday 5/6
    Day
    50°
    70% Chance of Rain
    Forecast day icon
    Night
    37°
    70% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Windy cooler. Rain likely. Highs 50 to 55. West winds 15 to 25 mph increasing to 25 to 35 mph in the afternoon. Gusts up to 50 mph. Chance of rain 70 percent.
    Night Details
    Very windy. Chance of rain in the evening then rain likely after midnight. Lows 35 to 40. West winds 30 to 45 mph with gusts to around 70 mph. Chance of rain 70 percent.
  • Forecast day icon
    Tuesday
    70% Chance of Snow
    42°
    Forecast night icon
    Night
    Frozen Mix
    32°
    Tuesday 5/7
    Day
    42°
    70% Chance of Snow
    Forecast day icon
    Night
    32°
    Frozen Mix
    Forecast night icon
    Hourly
    Day Details
    Strong winds. Rain likely. Moderate snow accumulations. Highs 40 to 45. Chance of rain 70 percent.
    Night Details
    Windy. Rain and snow. Moderate snow accumulations. Lows 35 to 40. Highs 40 to 45. Chance of precipitation 90 percent.
  • Forecast day icon
    Wednesday
    Frozen Mix
    37°
    Forecast night icon
    Night
    80% Chance of Storms
    34°
    Wednesday 5/8
    Day
    37°
    Frozen Mix
    Forecast day icon
    Night
    34°
    80% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Windy. Rain and snow. Moderate snow accumulations. Lows 35 to 40. Highs 40 to 45. Chance of precipitation 90 percent.
    Night Details
    Breezy. Rain showers and slight chance of thunderstorms. Lows 35 to 40. Chance of precipitation 80 percent.
  • Forecast day icon
    Thursday
    70% Chance of Rain
    45°
    Forecast night icon
    Night
    40% Chance of Rain
    34°
    Thursday 5/9
    Day
    45°
    70% Chance of Rain
    Forecast day icon
    Night
    34°
    40% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Not as cool. Rain likely. Highs 50 to 55. Chance of rain 70 percent.
    Night Details
    Mostly cloudy with a 40 percent chance of rain. Lows 35 to 40.
  • Forecast day icon
    Friday
    Partly Cloudy
    44°
    Forecast night icon
    Night
    Mostly Clear
    38°
    Friday 5/10
    Day
    44°
    Partly Cloudy
    Forecast day icon
    Night
    38°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Warmer. Partly cloudy with a 20 percent chance of rain. Highs 60 to 65.
    Night Details
    Mostly clear. Lows 40 to 45. Highs 65 to 70.
  • Forecast day icon
    Saturday
    Mostly Sunny
    62°
    Forecast night icon
    Night
    Clear
    44°
    Saturday 5/11
    Day
    62°
    Mostly Sunny
    Forecast day icon
    Night
    44°
    Clear
    Forecast night icon
    Day Details
    Mostly clear. Lows 40 to 45. Highs 65 to 70.
    Night Details
    Clear. Low temperature around 44F. Dew point will be around 41F with an average humidity of 74%. Winds will be 5 mph from the S.
  • Forecast day icon
    Sunday
    Mostly Sunny
    66°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Sunday 5/12
    Day
    66°
    Mostly Sunny
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 66F. Dew point will be around 43F with an average humidity of 56%. Winds will be 5 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 46F. Dew point will be around 43F with an average humidity of 69%. Winds will be 4 mph from the S.
  • Forecast day icon
    Monday
    Mostly Sunny
    64°
    Forecast night icon
    Night
    Mostly Cloudy
    44°
    Monday 5/13
    Day
    64°
    Mostly Sunny
    Forecast day icon
    Night
    44°
    Mostly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 64F. Dew point will be around 44F with an average humidity of 59%. Winds will be 5 mph from the NW.
    Night Details
    Mostly cloudy. Low temperature around 44F. Dew point will be around 43F with an average humidity of 74%. Winds will be 4 mph from the SW.