Diamond Bar, CA Weather Forecast & Current Conditions

Night: Partly cloudy in the evening then mostly cloudy. Lows in the mid 50s to mid 60s.

Day: Areas of low clouds and fog in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the upper 50s and 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the mid to upper 60s.

Day: Sunny. Highs around 90.

Night: Clear. Lows in the mid to upper 60s.

Day: Sunny. Highs around 90.

Night: Mostly clear. Lows in the mid to upper 60s.

Day: Partly cloudy in the morning then sunny. Highs around 90.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 80s.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Mostly clear in the evening then areas of low clouds and fog. Lows in the lower to mid 60s.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Areas of low clouds and fog in the morning then sunny. Highs in the mid to upper 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the upper 60s.

Day: Areas of low clouds and fog in the morning then sunny. Highs in the mid to upper 80s.

Night: Mostly clear. Lows around 70.

Day: Partly cloudy in the morning then sunny. Highs in the mid 80s to around 90.

Night: Mostly clear in the evening then partly cloudy. Lows around 70.

Day: Partly cloudy in the morning then sunny. Highs in the mid 80s to around 90.

Night: Mostly clear in the evening then partly cloudy. Lows in the upper 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the mid 40s to mid 50s.

Day: Sunny. Highs from the mid 70s to lower 80s at low elevations to the mid 60s to around 70 at high elevations.

Night: Clear. Lows in the 50s to lower 60s.

Day: Sunny. Highs from the 80s to around 90 at low elevations to the upper 60s to mid 70s at high elevations. Northeast winds around 15 mph in the morning.

Night: Clear. Lows in the 60s to around 70 except the mid to upper 50s colder valleys and slopes.

Day: Sunny. Highs from the 80s to around 90 at low elevations to the upper 60s to mid 70s at high elevations.

Night: Clear. Lows in the 60s to around 70 except the mid to upper 50s colder valleys and slopes.

Day: Sunny. Highs from the upper 70s and 80s at low elevations to the upper 60s to mid 70s at high elevations.

Night: Mostly clear. Lows in the mid 50s to mid 60s.

Day: Sunny. Highs from the upper 70s and 80s at low elevations to the mid 60s to lower 70s at high elevations.

Night: Mostly clear. Lows in the 50s to lower 60s.

Day: Sunny. Highs from the mid 70s to lower 80s at low elevations to the 60s at high elevations.

Night: Mostly clear. Lows in the upper 40s to mid 50s.

Day: Sunny. Highs from the 70s to lower 80s at low elevations to the 60s at high elevations.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 50s to lower 60s.

Day: Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the mid 50s to mid 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the mid 60s.

Day: Sunny. Highs in the mid 80s to around 90.

Night: Mostly clear. Lows in the mid to upper 60s.

Day: Sunny. Highs in the mid 80s to around 90.

Night: Mostly clear. Lows in the mid to upper 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 80s to around 90.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Mostly clear early then low clouds and fog. Lows in the upper 50s and 60s. West winds around 15 mph in the evening.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the mid 70s to around 80. Southwest winds around 15 mph in the afternoon.

Night: Mostly clear except for patchy low clouds and fog after midnight. Lows in the 60s. West winds around 15 mph in the evening.

Day: Low clouds and fog in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the upper 60s.

Day: Low clouds and fog in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the upper 60s.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows around 70.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the upper 60s.

Day: Partly cloudy. Highs in the mid 70s to lower 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the 50s to lower 60s. West winds around 15 mph in the evening.

Day: Sunny. Highs in the upper 70s and 80s.

Night: Clear. Lows in the mid 50s to mid 60s.

Day: Sunny. Highs in the 80s to around 90.

Night: Clear. Lows in the mid 60s to around 70.

Day: Sunny. Highs in the mid 80s to lower 90s.

Night: Mostly clear. Lows in the mid 60s to around 70.

Day: Sunny. Highs in the 80s to around 90.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the 80s.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the mid 50s.

Day: Sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the upper 40s and 50s. Southwest winds around 15 mph in the evening.

Day: Sunny. Highs from the upper 70s to mid 80s at low elevations to the upper 60s to mid 70s at high elevations.

Night: Clear. Lows in the mid 50s to mid 60s. Northeast winds around 15 mph after midnight.

Day: Sunny. Highs from the mid 80s to lower 90s at low elevations to the mid 70s to lower 80s at high elevations. Northeast winds 15 to 25 mph.

Night: Clear. Lows in the 60s to around 70.

Day: Sunny. Highs from the mid 80s to lower 90s at low elevations to the mid 70s to lower 80s at high elevations.

Night: Clear. Lows in the mid to upper 60s.

Day: Sunny. Highs from the 80s at low elevations to the mid 70s to around 80 at high elevations.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs from the lower to mid 80s at low elevations to the 70s at high elevations.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs from the mid 70s to lower 80s at low elevations to the upper 60s to mid 70s at high elevations.

Night: Mostly clear. Lows in the mid to upper 50s.

Day: Sunny. Highs from the mid 70s to lower 80s at low elevations to the upper 60s to mid 70s at high elevations.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 50s to lower 60s.

Day: Partly cloudy in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the mid 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Clear. Lows in the mid 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs around 90.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the lower 60s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Partly cloudy in the evening then low clouds and fog. Lows in the upper 50s to mid 60s.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the lower to mid 70s.

Night: Mostly clear except for patchy low clouds and fog after midnight. Lows in the upper 50s to mid 60s. West winds around 15 mph in the evening.

Day: Low clouds and fog in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Low clouds and fog in the morning then sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy. Highs around 80.

Night: Partly cloudy. Lows in the mid 60s.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy. Highs in the mid to upper 70s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 70s to around 80.

Night: Clear. Lows in the upper 40s and 50s. Southwest winds 15 to 25 mph.

Day: Sunny. Highs in the mid 80s to around 90.

Night: Clear. Lows in the 50s to lower 60s. West winds around 15 mph.

Day: Sunny. Highs around 90. Northeast winds around 15 mph in the afternoon.

Night: Clear. Lows in the 60s to around 70.

Day: Sunny. Highs in the lower to mid 90s.

Night: Clear. Lows in the 60s to around 70.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the mid 80s to lower 90s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the mid 50s to around 60.

Day: Sunny. Highs in the lower to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the 50s to lower 60s.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the 70s to lower 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 50s to mid 60s.

Day: Sunny except for patchy low clouds and fog in the morning. Highs in the 80s to lower 90s.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Sunny except for patchy low clouds and fog in the morning. Highs in the 80s to around 90.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 70s to around 80.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the mid 70s to around 80.

Night: Mostly clear in the evening then areas of low clouds and fog. Lows in the upper 50s to mid 60s. West winds around 15 mph in the evening.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the 70s.

Night: Mostly clear except for patchy low clouds and fog after midnight. Lows in the lower to mid 60s. West winds around 15 mph in the evening.

Day: Low clouds and fog in the morning then sunny. Highs around 80.

Night: Mostly clear in the evening then mostly cloudy. Lows in the mid 60s.

Day: Low clouds and fog in the morning then sunny. Highs around 80.

Night: Clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy. Highs around 80.

Night: Mostly clear in the evening then partly cloudy. Lows in the upper 60s.

Day: Partly cloudy in the morning then sunny. Highs around 80.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy. Highs in the mid to upper 70s.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid to upper 70s.

Night: Mostly clear. Lows in the upper 40s to mid 50s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Clear. Lows in the mid 50s to around 60. Northeast winds 10 to 20 mph after midnight.

Day: Sunny. Highs in the lower to mid 90s. Northeast winds 10 to 20 mph in the morning.

Night: Clear. Lows in the mid 60s.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Clear. Lows in the mid 60s.

Day: Sunny. Highs around 90.

Night: Mostly clear. Lows in the mid 60s.

Day: Sunny. Highs in the mid 80s to around 90.

Night: Mostly clear. Lows in the lower 60s.

Day: Sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs in the lower to mid 80s.

Night: Clear. Lows in the mid 50s to lower 60s. Southwest winds 15 to 25 mph.

Day: Sunny. Highs in the mid 70s to mid 80s. West winds around 15 mph shifting to the north in the afternoon.

Night: Clear. Lows in the upper 50s and 60s. West winds 15 to 25 mph.

Day: Sunny. Highs in the 80s to around 90. Northeast winds around 15 mph.

Night: Clear. Lows in the mid 60s to around 70. West winds around 15 mph after midnight.

Day: Sunny. Highs in the 80s to around 90.

Night: Clear. Lows in the mid 60s to around 70.

Day: Sunny. Highs in the upper 70s and 80s.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the mid 50s to around 60.

Day: Sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 50s to around 60.

Day: Partly cloudy in the morning then sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs in the 80s to lower 90s.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the 80s to around 90.

Night: Clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower to mid 80s.

Night: Mostly clear. Lows in the lower 60s.

Day: Partly cloudy in the morning then sunny. Highs around 80.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the 50s.

Day: Sunny. Highs in the 70s to lower 80s.

Night: Clear. Lows in the mid 50s to mid 60s.

Day: Sunny. Highs in the mid 80s to mid 90s except the lower to mid 80s colder hills. Northeast winds around 15 mph in the morning.

Night: Clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the 80s to lower 90s.

Night: Clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the 80s to around 90.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the upper 70s and 80s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the mid 70s to mid 80s.

Night: Mostly clear. Lows in the mid 50s to around 60.

Day: Sunny. Highs in the mid 70s to mid 80s.

Night: Mostly clear. Lows in the lower to mid 50s.

Day: Partly cloudy in the morning then sunny. Highs around 80.

Night: Mostly clear. Lows in the mid 50s to around 60.

Day: Sunny. Highs around 90.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the mid to upper 80s.

Night: Clear. Lows in the lower to mid 60s.

Day: Sunny. Highs in the upper 80s.

Night: Mostly clear. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the upper 80s.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower 80s.

Night: Mostly clear. Lows in the mid 50s to around 60.

Day: Sunny. Highs in the lower 80s.

Night: Low clouds and fog near the coast early spreading inland. Lows in the mid 50s to mid 60s.

Day: Low clouds and fog in the morning then partly cloudy. Highs in the lower to mid 70s.

Night: Low clouds and fog near the coast early spreading inland. Lows in the upper 50s to mid 60s.

Day: Low clouds and fog in the morning then sunny. Highs in the mid 70s to lower 80s.

Night: Partly cloudy. Lows in the mid 60s.

Day: Low clouds and fog in the morning then sunny. Highs in the mid 70s to lower 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Partly cloudy. Lows in the mid to upper 60s.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Partly cloudy. Highs in the mid 70s to around 80.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower to mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 70s to around 80.

Night: Mostly clear. Lows in the 50s to around 60.

Day: Sunny. Highs in the 80s.

Night: Clear. Lows in the mid 50s to lower 60s. North winds around 15 mph after midnight.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Mostly clear. Lows in the 60s to around 70.

Day: Sunny. Highs in the upper 80s to mid 90s.

Night: Clear. Lows in the 60s to around 70.

Day: Sunny. Highs in the mid 80s to lower 90s.

Night: Mostly clear. Lows in the 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid 80s to around 90.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows around 60. West winds around 15 mph in the evening.

Day: Areas of low clouds and fog in the morning then sunny. Highs in the mid to upper 70s. Southwest winds around 15 mph in the afternoon.

Night: Mostly clear. Lows in the upper 50s to mid 60s.

Day: Sunny except for patchy low clouds and fog in the morning. Highs in the upper 70s to mid 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the mid 60s.

Day: Sunny except for patchy low clouds and fog in the morning. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy. Highs in the upper 70s to mid 80s.

Night: Mostly clear. Lows in the mid 60s.

Day: Partly cloudy in the morning then sunny. Highs in the lower 80s.

Night: Mostly clear in the evening then partly cloudy. Lows in the lower 60s.

Day: Partly cloudy in the morning then sunny. Highs in the mid to upper 70s.

Night: Mostly clear. Lows around 60.

Day: Sunny. Highs around 80.