Johnstown, Colorado | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Clear
    36°
    Tuesday 5/7
    Forecast night icon
    36°
    Clear
    Hourly
    Night Details
    Clear. Low temperature around 36F. Dew point will be around 18F with an average humidity of 45%. Winds will be 14 mph from the W.
  • Forecast day icon
    Wednesday
    Partly Cloudy
    58°
    Forecast night icon
    Night
    Mostly Cloudy
    43°
    Wednesday 5/8
    Day
    58°
    Partly Cloudy
    Forecast day icon
    Night
    43°
    Mostly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy. Highs in the lower 60s. West winds 10 to 15 mph with gusts up to 30 mph.
    Night Details
    Mostly cloudy with a 20 percent chance of rain showers. Lows in the upper 30s. North winds 10 to 15 mph.
  • Forecast day icon
    Thursday
    70% Chance of Storms
    55°
    Forecast night icon
    Night
    30% Chance of Storms
    42°
    Thursday 5/9
    Day
    55°
    70% Chance of Storms
    Forecast day icon
    Night
    42°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Chance of showers in the morning then showers likely and slight chance of thunderstorms in the afternoon. Highs in the mid 50s. North winds 10 to 20 mph with gusts up to 30 mph. Chance of rain 70 percent.
    Night Details
    Mostly cloudy with a chance of rain showers and slight chance of thunderstorms. Lows in the mid to upper 30s. Chance of rain 30 percent.
  • Forecast day icon
    Friday
    Mostly Cloudy
    63°
    Forecast night icon
    Night
    Partly Cloudy
    41°
    Friday 5/10
    Day
    63°
    Mostly Cloudy
    Forecast day icon
    Night
    41°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 20 percent chance of thunderstorms. Highs in the lower 60s.
    Night Details
    Partly cloudy with a 10 percent chance of thunderstorms. Lows in the lower 40s.
  • Forecast day icon
    Saturday
    Partly Cloudy
    71°
    Forecast night icon
    Night
    30% Chance of Storms
    47°
    Saturday 5/11
    Day
    71°
    Partly Cloudy
    Forecast day icon
    Night
    47°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 20 percent chance of thunderstorms. Highs in the lower 70s.
    Night Details
    Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the lower to mid 40s. Chance of rain 30 percent.
  • Forecast day icon
    Sunday
    50% Chance of Storms
    74°
    Forecast night icon
    Night
    30% Chance of Storms
    49°
    Sunday 5/12
    Day
    74°
    50% Chance of Storms
    Forecast day icon
    Night
    49°
    30% Chance of Storms
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 50 percent chance of thunderstorms. Highs in the mid 70s.
    Night Details
    Partly cloudy with a chance of showers and slight chance of thunderstorms. Lows in the mid 40s. Chance of rain 30 percent.
  • Forecast day icon
    Monday
    30% Chance of Storms
    75°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Monday 5/13
    Day
    75°
    30% Chance of Storms
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Partly cloudy with a 30 percent chance of thunderstorms. Highs in the mid 70s.
    Night Details
    Partly cloudy with a 10 percent chance of thunderstorms. Lows in the mid 40s.
  • Forecast day icon
    Tuesday
    30% Chance of Storms
    74°
    Forecast night icon
    Night
    50% Chance of Rain
    53°
    Tuesday 5/14
    Day
    74°
    30% Chance of Storms
    Forecast day icon
    Night
    53°
    50% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a 30 percent chance of thunderstorms. Highs in the upper 70s.
    Night Details
    Partly cloudy with a chance of rain. Chance of precipitation 45%. Low temperature around 53F. Dew point will be around 41F with an average humidity of 53%. Winds will be 5 mph from the W.
  • Forecast day icon
    Wednesday
    30% Chance of Rain
    71°
    Forecast night icon
    Night
    30% Chance of Rain
    51°
    Wednesday 5/15
    Day
    71°
    30% Chance of Rain
    Forecast day icon
    Night
    51°
    30% Chance of Rain
    Forecast night icon
    Day Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. High temperature around 71F. Dew point will be around 42F with an average humidity of 43%. Winds will be 3 mph from the E.
    Night Details
    Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 51F. Dew point will be around 41F with an average humidity of 54%. Winds will be 4 mph from the W.
  • Forecast day icon
    Thursday
    Mostly Sunny
    75°
    Forecast night icon
    Night
    Mostly Clear
    54°
    Thursday 5/16
    Day
    75°
    Mostly Sunny
    Forecast day icon
    Night
    54°
    Mostly Clear
    Forecast night icon
    Day Details
    Mostly sunny. High temperature around 75F. Dew point will be around 38F with an average humidity of 36%. Winds will be 3 mph from the SE.
    Night Details
    Mostly clear. Low temperature around 54F. Dew point will be around 36F with an average humidity of 40%. Winds will be 5 mph from the W.