Great Falls, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Monday
    50% Chance of Storms
    57°
    Forecast night icon
    Night
    Partly Cloudy
    35°
    Monday 5/20
    Day
    57°
    50% Chance of Storms
    Forecast day icon
    Night
    35°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy in the morning then mostly cloudy with chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 55 to 60. Northwest winds up to 10 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. Northwest winds up to 10 mph shifting to the southwest after midnight.
  • Forecast day icon
    Tuesday
    50% Chance of Storms
    62°
    Forecast night icon
    Night
    Mostly Cloudy
    43°
    Tuesday 5/21
    Day
    62°
    50% Chance of Storms
    Forecast day icon
    Night
    43°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Slight chance of rain showers in the morning then chance of rain showers and slight chance of thunderstorms in the afternoon. Highs 60 to 65. West winds up to 10 mph. Chance of precipitation 50 percent.
    Night Details
    Mostly cloudy. A 20 percent chance of rain showers in the evening. Lows around 40. Southwest winds up to 10 mph.
  • Forecast day icon
    Wednesday
    Thunderstorms
    58°
    Forecast night icon
    Night
    Thunderstorms
    40°
    Wednesday 5/22
    Day
    58°
    Thunderstorms
    Forecast day icon
    Night
    40°
    Thunderstorms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy. Slight chance of rain in the morning then rain showers and slight chance of thunderstorms in the afternoon. Highs around 60. Southwest winds up to 5 mph shifting to the west in the afternoon. Chance of precipitation 90 percent.
    Night Details
    Rain showers and slight chance of thunderstorms. Lows around 40. Chance of precipitation 90 percent.
  • Forecast day icon
    Thursday
    Rain
    49°
    Forecast night icon
    Night
    50% Chance of Rain
    39°
    Thursday 5/23
    Day
    49°
    Rain
    Forecast day icon
    Night
    39°
    50% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Cooler rain. Highs around 50. Chance of rain 90 percent.
    Night Details
    Mostly cloudy with a 50 percent chance of rain. Lows 35 to 40.
  • Forecast day icon
    Friday
    Partly Cloudy
    63°
    Forecast night icon
    Night
    Mostly Cloudy
    46°
    Friday 5/24
    Day
    63°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Warmer. Partly cloudy with a 20 percent chance of rain. Highs 60 to 65.
    Night Details
    Mostly cloudy with a 20 percent chance of rain. Lows 40 to 45.
  • Forecast day icon
    Saturday
    50% Chance of Storms
    59°
    Forecast night icon
    Night
    50% Chance of Rain
    40°
    Saturday 5/25
    Day
    59°
    50% Chance of Storms
    Forecast day icon
    Night
    40°
    50% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Highs 60 to 65. Chance of precipitation 50 percent.
    Night Details
    Mostly cloudy with a 50 percent chance of rain. Lows around 40.
  • Forecast day icon
    Sunday
    50% Chance of Storms
    62°
    Forecast night icon
    Night
    30% Chance of Rain
    41°
    Sunday 5/26
    Day
    62°
    50% Chance of Storms
    Forecast day icon
    Night
    41°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly cloudy with chance of rain showers and slight chance of thunderstorms. Highs 55 to 60. Chance of precipitation 50 percent.
    Night Details
    Mostly clear with a slight chance of rain. Chance of precipitation 25%. Low temperature around 41F. Dew point will be around 36F with an average humidity of 66%. Winds will be 10 mph from the W.
  • Forecast day icon
    Monday
    Sunny
    67°
    Forecast night icon
    Night
    Clear
    44°
    Monday 5/27
    Day
    67°
    Sunny
    Forecast day icon
    Night
    44°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 67F. Dew point will be around 38F with an average humidity of 48%. Winds will be 10 mph from the W.
    Night Details
    Clear. Low temperature around 44F. Dew point will be around 39F with an average humidity of 65%. Winds will be 7 mph from the SW.
  • Forecast day icon
    Tuesday
    Sunny
    72°
    Forecast night icon
    Night
    Clear
    48°
    Tuesday 5/28
    Day
    72°
    Sunny
    Forecast day icon
    Night
    48°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 72F. Dew point will be around 41F with an average humidity of 45%. Winds will be 6 mph from the SW.
    Night Details
    Clear. Low temperature around 48F. Dew point will be around 42F with an average humidity of 62%. Winds will be 6 mph from the SW.
  • Forecast day icon
    Wednesday
    Sunny
    77°
    Forecast night icon
    Night
    Mostly Clear
    51°
    Wednesday 5/29
    Day
    77°
    Sunny
    Forecast day icon
    Night
    51°
    Mostly Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 77F. Dew point will be around 43F with an average humidity of 42%. Winds will be 6 mph from the SW.
    Night Details
    Mostly clear. Low temperature around 51F. Dew point will be around 45F with an average humidity of 63%. Winds will be 6 mph from the SW.