Diamond Bar, California | 10-Day Weather Forecasts & Weekend Weather | WeatherBug
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10 Day Forecast
  • Forecast night icon
    Night
    Mostly Cloudy
    51°
    Thursday 4/25
    Forecast night icon
    51°
    Mostly Cloudy
    Hourly
    Night Details
    Mostly cloudy. A 20 percent chance of showers after midnight. Lows in the upper 40s to mid 50s. Southwest winds around 15 mph in the evening.
  • Forecast day icon
    Friday
    Partly Cloudy
    64°
    Forecast night icon
    Night
    Mostly Clear
    53°
    Friday 4/26
    Day
    64°
    Partly Cloudy
    Forecast day icon
    Night
    53°
    Mostly Clear
    Forecast night icon
    Hourly
    Day Details
    Mostly cloudy with a 20 percent chance of showers in the morning becoming partly cloudy in the afternoon. Highs in the mid 60s to around 70. West winds around 15 mph in the afternoon.
    Night Details
    Mostly clear. Lows in the upper 40s to mid 50s. West winds 15 to 25 mph shifting to the northeast after midnight.
  • Forecast day icon
    Saturday
    Sunny
    68°
    Forecast night icon
    Night
    Partly Cloudy
    49°
    Saturday 4/27
    Day
    68°
    Sunny
    Forecast day icon
    Night
    49°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny. Highs in the lower to mid 70s. Southwest winds around 15 mph in the afternoon.
    Night Details
    Clear in the evening then low clouds and fog. Lows in the lower 50s. Southwest winds around 15 mph in the evening.
  • Forecast day icon
    Sunday
    Partly Cloudy
    72°
    Forecast night icon
    Night
    Partly Cloudy
    52°
    Sunday 4/28
    Day
    72°
    Partly Cloudy
    Forecast day icon
    Night
    52°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Low clouds and fog in the morning then sunny. Highs in the lower to mid 70s.
    Night Details
    Clear except for patchy low clouds and fog after midnight. Lows in the mid 50s.
  • Forecast day icon
    Monday
    Partly Cloudy
    76°
    Forecast night icon
    Night
    Partly Cloudy
    53°
    Monday 4/29
    Day
    76°
    Partly Cloudy
    Forecast day icon
    Night
    53°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny except for patchy low clouds and fog in the morning. Highs in the mid 70s to around 80.
    Night Details
    Clear except for patchy low clouds and fog after midnight. Lows in the mid 50s.
  • Forecast day icon
    Tuesday
    Partly Cloudy
    76°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Tuesday 4/30
    Day
    76°
    Partly Cloudy
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Sunny except for patchy low clouds and fog in the morning. Highs in the mid 70s to lower 80s.
    Night Details
    Low clouds and fog in the night and morning otherwise clear. Lows in the mid 50s. Highs in the mid 70s to lower 80s.
  • Forecast day icon
    Wednesday
    Foggy
    76°
    Forecast night icon
    Night
    Partly Cloudy
    54°
    Wednesday 5/1
    Day
    76°
    Foggy
    Forecast day icon
    Night
    54°
    Partly Cloudy
    Forecast night icon
    Hourly
    Day Details
    Low clouds and fog in the night and morning otherwise clear. Lows in the mid 50s. Highs in the mid 70s to lower 80s.
    Night Details
    Mostly clear in the evening then low clouds and fog. Lows in the mid 50s.
  • Forecast day icon
    Thursday
    Partly Cloudy
    75°
    Forecast night icon
    Night
    Clear
    53°
    Thursday 5/2
    Day
    75°
    Partly Cloudy
    Forecast day icon
    Night
    53°
    Clear
    Forecast night icon
    Day Details
    Low clouds and fog in the morning then sunny. Highs in the mid to upper 70s.
    Night Details
    Clear. Low temperature around 53F. Dew point will be around 49F with an average humidity of 74%. Winds will be 5 mph from the SW.
  • Forecast day icon
    Friday
    Sunny
    71°
    Forecast night icon
    Night
    Clear
    51°
    Friday 5/3
    Day
    71°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 71F. Dew point will be around 50F with an average humidity of 58%. Winds will be 7 mph from the SW.
    Night Details
    Clear. Low temperature around 51F. Dew point will be around 47F with an average humidity of 70%. Winds will be 5 mph from the SW.
  • Forecast day icon
    Saturday
    Sunny
    69°
    Forecast night icon
    Night
    Clear
    51°
    Saturday 5/4
    Day
    69°
    Sunny
    Forecast day icon
    Night
    51°
    Clear
    Forecast night icon
    Day Details
    Sunny. High temperature around 69F. Dew point will be around 48F with an average humidity of 56%. Winds will be 7 mph from the SW.
    Night Details
    Clear. Low temperature around 51F. Dew point will be around 47F with an average humidity of 72%. Winds will be 5 mph from the SW.