Sweet Grass, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    35°
    Sunday 5/19
    Forecast night icon
    35°
    Partly Cloudy
    Hourly
    Night Details
    Mostly cloudy with a 20 percent chance of thunderstorms early in the evening then partly cloudy after midnight. Patchy fog after midnight. Lows 30 to 35. Northwest winds 5 to 15 mph.
  • Forecast day icon
    Monday
    50% Chance of Storms
    52°
    Forecast night icon
    Night
    Partly Cloudy
    40°
    Monday 5/20
    Day
    52°
    50% Chance of Storms
    Forecast day icon
    Night
    40°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Patchy fog in the morning. Chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 55 to 60. Northwest winds 5 to 15 mph. Chance of precipitation 50 percent.
    Night Details
    Mostly cloudy with a 20 percent chance of thunderstorms in the evening then partly cloudy after midnight. Lows in the mid 30s. West winds 5 to 15 mph.
  • Forecast day icon
    Tuesday
    30% Chance of Rain
    59°
    Forecast night icon
    Night
    Mostly Cloudy
    44°
    Tuesday 5/21
    Day
    59°
    30% Chance of Rain
    Forecast day icon
    Night
    44°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny in the morning then mostly cloudy with a 30 percent chance of rain in the afternoon. Highs 60 to 65. West winds 5 to 15 mph.
    Night Details
    Mostly cloudy. Lows around 40. Southwest winds 5 to 15 mph.
  • Forecast day icon
    Wednesday
    70% Chance of Storms
    54°
    Forecast night icon
    Night
    70% Chance of Rain
    39°
    Wednesday 5/22
    Day
    54°
    70% Chance of Storms
    Forecast day icon
    Night
    39°
    70% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Rain showers likely and slight chance of thunderstorms. Highs 55 to 60. Chance of precipitation 70 percent.
    Night Details
    Rain likely. Lows 35 to 40. Chance of rain 70 percent.
  • Forecast day icon
    Thursday
    70% Chance of Rain
    50°
    Forecast night icon
    Night
    Partly Cloudy
    36°
    Thursday 5/23
    Day
    50°
    70% Chance of Rain
    Forecast day icon
    Night
    36°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Rain likely. Highs around 50. Chance of rain 70 percent.
    Night Details
    Partly cloudy with a 20 percent chance of rain. Lows around 35. Highs around 60.
  • Forecast day icon
    Friday
    Partly Cloudy
    59°
    Forecast night icon
    Night
    Mostly Cloudy
    45°
    Friday 5/24
    Day
    59°
    Partly Cloudy
    Forecast day icon
    Night
    45°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of rain. Lows around 35. Highs around 60.
    Night Details
    Mostly cloudy with a 20 percent chance of rain. Lows around 40.
  • Forecast day icon
    Saturday
    40% Chance of Rain
    60°
    Forecast night icon
    Night
    40% Chance of Rain
    43°
    Saturday 5/25
    Day
    60°
    40% Chance of Rain
    Forecast day icon
    Night
    43°
    40% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 40 percent chance of rain. Highs 60 to 65. Lows around 40.
    Night Details
    Mostly cloudy with a 40 percent chance of rain. Highs 60 to 65. Lows around 40.
  • Forecast day icon
    Sunday
    50% Chance of Rain
    56°
    Forecast night icon
    Night
    Mostly Cloudy
    42°
    Sunday 5/26
    Day
    56°
    50% Chance of Rain
    Forecast day icon
    Night
    42°
    Mostly Cloudy
    Forecast night icon
    Day Details
    Mostly cloudy with a 50 percent chance of rain. Highs around 60.
    Night Details
    Mostly cloudy. Low temperature around 42F. Dew point will be around 38F with an average humidity of 72%. Winds will be 12 mph from the W.
  • Forecast day icon
    Monday
    Partly Cloudy
    62°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Monday 5/27
    Day
    62°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 62F. Dew point will be around 38F with an average humidity of 55%. Winds will be 9 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 46F. Dew point will be around 39F with an average humidity of 63%. Winds will be 9 mph from the W.
  • Forecast day icon
    Tuesday
    Sunny
    67°
    Forecast night icon
    Night
    Clear
    49°
    Tuesday 5/28
    Day
    67°
    Sunny
    Forecast day icon
    Night
    49°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 67F. Dew point will be around 40F with an average humidity of 49%. Winds will be 6 mph from the W.
    Night Details
    Clear. Low temperature around 49F. Dew point will be around 41F with an average humidity of 59%. Winds will be 7 mph from the SW.