Fort Harrison, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast day icon
    Sunday
    Sunny
    79°
    Forecast night icon
    Night
    Mostly Clear
    50°
    Sunday 5/12
    Day
    79°
    Sunny
    Forecast day icon
    Night
    50°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs 75 to 80. West winds 5 to 15 mph.
    Night Details
    Mostly clear. Lows in the mid 40s. West winds 5 to 15 mph.
  • Forecast day icon
    Monday
    Mostly Cloudy
    77°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Monday 5/13
    Day
    77°
    Mostly Cloudy
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Breezy. Sunny in the morning then mostly cloudy with a 20 percent chance of thunderstorms in the afternoon. Highs 75 to 80. Southwest winds 5 to 15 mph increasing to west 15 to 25 mph in the afternoon.
    Night Details
    Breezy. Partly cloudy with slight chance of thunderstorms in the evening then mostly cloudy with slight chance of rain after midnight. Lows 45 to 50. Northwest winds 15 to 25 mph becoming west 5 to 10 mph after midnight. Chance of precipitation 20 percent.
  • Forecast day icon
    Tuesday
    70% Chance of Storms
    62°
    Forecast night icon
    Night
    Mostly Cloudy
    44°
    Tuesday 5/14
    Day
    62°
    70% Chance of Storms
    Forecast day icon
    Night
    44°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Cooler. Mostly cloudy. Chance of rain in the morning then rain showers likely and slight chance of thunderstorms in the afternoon. Highs around 65. Northwest winds 5 to 15 mph. Chance of precipitation 70 percent.
    Night Details
    Mostly cloudy with a 20 percent chance of thunderstorms. Lows 40 to 45.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    74°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Wednesday 5/15
    Day
    74°
    Partly Cloudy
    Forecast day icon
    Night
    48°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of rain. Highs 70 to 75. Lows 45 to 50.
    Night Details
    Partly cloudy with a 20 percent chance of rain. Highs 70 to 75. Lows 45 to 50.
  • Forecast day icon
    Thursday
    30% Chance of Rain
    76°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Thursday 5/16
    Day
    76°
    30% Chance of Rain
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 30 percent chance of rain. Highs around 75. Lows around 45.
    Night Details
    Partly cloudy with a 30 percent chance of rain. Highs around 75. Lows around 45.
  • Forecast day icon
    Friday
    Partly Cloudy
    63°
    Forecast night icon
    Night
    Partly Cloudy
    42°
    Friday 5/17
    Day
    63°
    Partly Cloudy
    Forecast day icon
    Night
    42°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of rain. Highs around 70. Lows around 40.
    Night Details
    Partly cloudy with a 20 percent chance of rain. Highs around 70. Lows around 40.
  • Forecast day icon
    Saturday
    40% Chance of Storms
    53°
    Forecast night icon
    Night
    30% Chance of Rain
    41°
    Saturday 5/18
    Day
    53°
    40% 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 60 to 65. Chance of precipitation 40 percent.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 41F. Dew point will be around 35F with an average humidity of 64%. Winds will be 6 mph from the N.
  • Forecast day icon
    Sunday
    30% Chance of Rain
    66°
    Forecast night icon
    Night
    Partly Cloudy
    43°
    Sunday 5/19
    Day
    66°
    30% Chance of Rain
    Forecast day icon
    Night
    43°
    Partly Cloudy
    Forecast night icon
    Day Details
    Mostly sunny with a slight chance of rain. Chance of precipitation 30%. High temperature around 66F. Dew point will be around 39F with an average humidity of 52%. Winds will be 6 mph from the NW.
    Night Details
    Partly cloudy. Low temperature around 43F. Dew point will be around 36F with an average humidity of 56%. Winds will be 6 mph from the W.
  • Forecast day icon
    Monday
    Mostly Sunny
    67°
    Forecast night icon
    Night
    30% Chance of Rain
    44°
    Monday 5/20
    Day
    67°
    Mostly Sunny
    Forecast day icon
    Night
    44°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 67F. Dew point will be around 39F with an average humidity of 48%. Winds will be 8 mph from the NW.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 44F. Dew point will be around 37F with an average humidity of 57%. Winds will be 6 mph from the NW.
  • Forecast day icon
    Tuesday
    40% Chance of Rain
    64°
    Forecast night icon
    Night
    50% Chance of Rain
    44°
    Tuesday 5/21
    Day
    64°
    40% Chance of Rain
    Forecast day icon
    Night
    44°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 64F. Dew point will be around 42F with an average humidity of 56%. Winds will be 8 mph from the NW.
    Night Details
    Cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 44F. Dew point will be around 40F with an average humidity of 65%. Winds will be 7 mph from the NW.