Westby, Montana | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    30% Chance of Rain
    48°
    Sunday 5/12
    Forecast night icon
    48°
    30% Chance of Rain
    Hourly
    Night Details
    Mostly clear this evening then partly cloudy with a chance of rain after midnight. Lows in the mid 40s. Northeast wind 5 to 10 mph becoming southeast after midnight. Chance of rain 30 percent.
  • Forecast day icon
    Monday
    50% Chance of Storms
    77°
    Forecast night icon
    Night
    70% Chance of Storms
    53°
    Monday 5/13
    Day
    77°
    50% Chance of Storms
    Forecast day icon
    Night
    53°
    70% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly sunny. A chance of rain in the morning then a chance of thunderstorms with a slight chance of rain in the afternoon. Some thunderstorms may produce gusty winds in the afternoon. Highs in the upper 70s. Southeast wind 15 to 20 mph. Chance of rain 50 percent.
    Night Details
    Showers likely with a chance of thunderstorms in the evening then a chance of thunderstorms after midnight. Some thunderstorms may produce gusty winds in the evening. Lows in the upper 40s. Northeast wind 10 to 15 mph. Chance of rain 70 percent.
  • Forecast day icon
    Tuesday
    40% Chance of Rain
    64°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Tuesday 5/14
    Day
    64°
    40% Chance of Rain
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    A slight chance of rain in the morning then a chance of rain in the afternoon. Cooler with highs in the upper 60s. Northwest wind 15 to 20 mph. Chance of rain 40 percent.
    Night Details
    A slight chance of rain in the evening then partly cloudy after midnight. Lows in the lower 40s. North wind 15 to 20 mph easing to 5 to 10 mph after midnight. Chance of rain 20 percent.
  • Forecast day icon
    Wednesday
    Chance of Rain
    68°
    Forecast night icon
    Night
    Chance of Rain
    49°
    Wednesday 5/15
    Day
    68°
    Chance of Rain
    Forecast day icon
    Night
    49°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    A slight chance of rain. Highs in the upper 60s. Lows in the mid 40s.
    Night Details
    A slight chance of rain. Highs in the upper 60s. Lows in the mid 40s.
  • Forecast day icon
    Thursday
    Chance of Rain
    69°
    Forecast night icon
    Night
    Chance of Storms
    49°
    Thursday 5/16
    Day
    69°
    Chance of Rain
    Forecast day icon
    Night
    49°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    A chance of rain. Highs in the lower 70s.
    Night Details
    A chance of showers with a slight chance of thunderstorms. Lows in the upper 40s.
  • Forecast day icon
    Friday
    Chance of Storms
    63°
    Forecast night icon
    Night
    Chance of Storms
    44°
    Friday 5/17
    Day
    63°
    Chance of Storms
    Forecast day icon
    Night
    44°
    Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    A chance of showers with a slight chance of thunderstorms. Highs in the mid 60s.
    Night Details
    A chance of showers with a slight chance of thunderstorms. Lows around 40.
  • Forecast day icon
    Saturday
    Chance of Rain
    58°
    Forecast night icon
    Night
    Chance of Rain
    42°
    Saturday 5/18
    Day
    58°
    Chance of Rain
    Forecast day icon
    Night
    42°
    Chance of Rain
    Forecast night icon
    Hourly
    Day Details
    A chance of rain. Highs around 60.
    Night Details
    A slight chance of rain. Lows in the upper 30s. Highs in the lower 60s.
  • Forecast day icon
    Sunday
    Chance of Rain
    63°
    Forecast night icon
    Night
    Mostly Clear
    45°
    Sunday 5/19
    Day
    63°
    Chance of Rain
    Forecast day icon
    Night
    45°
    Mostly Clear
    Forecast night icon
    Day Details
    A slight chance of rain. Lows in the upper 30s. Highs in the lower 60s.
    Night Details
    Mostly clear. Low temperature around 45F. Dew point will be around 32F with an average humidity of 50%. Winds will be 5 mph from the NW.
  • Forecast day icon
    Monday
    Mostly Sunny
    65°
    Forecast night icon
    Night
    30% Chance of Rain
    47°
    Monday 5/20
    Day
    65°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 65F. Dew point will be around 34F with an average humidity of 41%. Winds will be 2 mph from the NW.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 47F. Dew point will be around 36F with an average humidity of 54%. Winds will be 3 mph from the E.
  • Forecast day icon
    Tuesday
    40% Chance of Rain
    64°
    Forecast night icon
    Night
    30% Chance of Rain
    46°
    Tuesday 5/21
    Day
    64°
    40% Chance of Rain
    Forecast day icon
    Night
    46°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a chance of rain. Chance of precipitation 40%. High temperature around 64F. Dew point will be around 37F with an average humidity of 45%. Winds will be 3 mph from the W.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 46F. Dew point will be around 36F with an average humidity of 56%. Winds will be 3 mph from the N.