Longmont, Colorado | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Partly Cloudy
    42°
    Friday 5/10
    Forecast night icon
    42°
    Partly Cloudy
    Hourly
    Night Details
    Partly cloudy. Slight chance of thunderstorms early in the evening. Lows in the lower 40s. Chance of precipitation 10 percent.
  • Forecast day icon
    Saturday
    60% Chance of Storms
    64°
    Forecast night icon
    Night
    50% Chance of Storms
    49°
    Saturday 5/11
    Day
    64°
    60% Chance of Storms
    Forecast day icon
    Night
    49°
    50% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Slight chance of showers in the morning then showers likely and chance of thunderstorms in the afternoon. Highs in the mid to upper 60s. Chance of rain 60 percent.
    Night Details
    Mostly cloudy. Chance of thunderstorms in the evening then a slight chance of thunderstorms after midnight. Lows in the mid 40s. Chance of precipitation 50 percent.
  • Forecast day icon
    Sunday
    60% Chance of Storms
    64°
    Forecast night icon
    Night
    30% Chance of Storms
    46°
    Sunday 5/12
    Day
    64°
    60% Chance of Storms
    Forecast day icon
    Night
    46°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Showers likely and chance of thunderstorms. Highs in the mid to upper 60s. North winds 10 to 15 mph with gusts up to 30 mph. Chance of rain 60 percent.
    Night Details
    Partly cloudy with a 30 percent chance of thunderstorms. Lows in the mid 40s.
  • Forecast day icon
    Monday
    Partly Cloudy
    71°
    Forecast night icon
    Night
    Partly Cloudy
    46°
    Monday 5/13
    Day
    71°
    Partly Cloudy
    Forecast day icon
    Night
    46°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower to mid 70s.
    Night Details
    Partly cloudy. Lows in the upper 40s.
  • Forecast day icon
    Tuesday
    50% Chance of Storms
    74°
    Forecast night icon
    Night
    Mostly Cloudy
    47°
    Tuesday 5/14
    Day
    74°
    50% Chance of Storms
    Forecast day icon
    Night
    47°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the 70s.
    Night Details
    Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the mid 40s.
  • Forecast day icon
    Wednesday
    70% Chance of Storms
    59°
    Forecast night icon
    Night
    Mostly Cloudy
    43°
    Wednesday 5/15
    Day
    59°
    70% Chance of Storms
    Forecast day icon
    Night
    43°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Showers likely and chance of thunderstorms. Cooler. Highs near 60. Chance of rain 70 percent.
    Night Details
    Mostly cloudy with a 20 percent chance of thunderstorms. Lows in the lower 40s.
  • Forecast day icon
    Thursday
    30% Chance of Storms
    71°
    Forecast night icon
    Night
    Partly Cloudy
    45°
    Thursday 5/16
    Day
    71°
    30% Chance of Storms
    Forecast day icon
    Night
    45°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a chance of showers and slight chance of thunderstorms. Highs in the mid to upper 60s. Chance of rain 30 percent.
    Night Details
    Partly cloudy with a 10 percent chance of thunderstorms. Lows in the mid 40s.
  • Forecast day icon
    Friday
    Mostly Sunny
    68°
    Forecast night icon
    Night
    Clear
    47°
    Friday 5/17
    Day
    68°
    Mostly Sunny
    Forecast day icon
    Night
    47°
    Clear
    Forecast night icon
    Day Details
    Mostly sunny with a 20 percent chance of thunderstorms. Highs in the lower to mid 70s.
    Night Details
    Clear. Low temperature around 47F. Dew point will be around 33F with an average humidity of 47%. Winds will be 1 mph from the S.
  • Forecast day icon
    Saturday
    Sunny
    69°
    Forecast night icon
    Night
    Clear
    48°
    Saturday 5/18
    Day
    69°
    Sunny
    Forecast day icon
    Night
    48°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 69F. Dew point will be around 34F with an average humidity of 36%. Winds will be 3 mph from the E.
    Night Details
    Clear. Low temperature around 48F. Dew point will be around 38F with an average humidity of 52%. Winds will be 2 mph from the N.
  • Forecast day icon
    Sunday
    Mostly Sunny
    70°
    Forecast night icon
    Night
    30% Chance of Rain
    50°
    Sunday 5/19
    Day
    70°
    Mostly Sunny
    Forecast day icon
    Night
    50°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 70F. Dew point will be around 39F with an average humidity of 42%. Winds will be 3 mph from the E.
    Night Details
    Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 50F. Dew point will be around 41F with an average humidity of 56%. Winds will be 1 mph from the SE.