Fort Harrison, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Clear
    49°
    Saturday 5/11
    Forecast night icon
    49°
    Mostly Clear
    Hourly
    Night Details
    Mostly clear. Low temperature around 49F. Dew point will be around 40F with an average humidity of 52%. Winds will be 7 mph from the SW.
  • Forecast day icon
    Sunday
    Sunny
    80°
    Forecast night icon
    Night
    Mostly Clear
    52°
    Sunday 5/12
    Day
    80°
    Sunny
    Forecast day icon
    Night
    52°
    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
    76°
    Forecast night icon
    Night
    Partly Cloudy
    48°
    Monday 5/13
    Day
    76°
    Mostly Cloudy
    Forecast day icon
    Night
    48°
    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
    65°
    Forecast night icon
    Night
    Mostly Cloudy
    43°
    Tuesday 5/14
    Day
    65°
    70% Chance of Storms
    Forecast day icon
    Night
    43°
    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
    73°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Wednesday 5/15
    Day
    73°
    Partly Cloudy
    Forecast day icon
    Night
    49°
    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
    75°
    Forecast night icon
    Night
    30% Chance of Rain
    43°
    Thursday 5/16
    Day
    75°
    30% Chance of Rain
    Forecast day icon
    Night
    43°
    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
    69°
    Forecast night icon
    Night
    Partly Cloudy
    42°
    Friday 5/17
    Day
    69°
    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
    71°
    Forecast night icon
    Night
    Clear
    44°
    Saturday 5/18
    Day
    71°
    40% Chance of Storms
    Forecast day icon
    Night
    44°
    Clear
    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
    Clear. Low temperature around 44F. Dew point will be around 40F with an average humidity of 61%. Winds will be 5 mph from the W.
  • Forecast day icon
    Sunday
    Partly Cloudy
    73°
    Forecast night icon
    Night
    30% Chance of Rain
    45°
    Sunday 5/19
    Day
    73°
    Partly Cloudy
    Forecast day icon
    Night
    45°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy. High temperature around 73F. Dew point will be around 42F with an average humidity of 47%. Winds will be 7 mph from the W.
    Night Details
    Mostly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 45F. Dew point will be around 41F with an average humidity of 63%. Winds will be 6 mph from the W.
  • Forecast day icon
    Monday
    40% Chance of Rain
    67°
    Forecast night icon
    Night
    30% Chance of Rain
    42°
    Monday 5/20
    Day
    67°
    40% Chance of Rain
    Forecast day icon
    Night
    42°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a chance of rain. Chance of precipitation 35%. High temperature around 67F. Dew point will be around 42F with an average humidity of 51%. Winds will be 10 mph from the W.
    Night Details
    Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 42F. Dew point will be around 39F with an average humidity of 64%. Winds will be 8 mph from the W.