National Weather Service Forecast for: Montclair CA
Issued by: National Weather Service San Diego, CA
Updated: 8:38 pm PDT Jun 29, 2026
 
Tonight

Tonight: Patchy drizzle after 2am.  Patchy fog between 11pm and 2am.  Otherwise, mostly cloudy, with a low around 57. West wind 5 to 10 mph.
Patchy Fog
then Patchy
Drizzle and
Patchy Fog
Tuesday

Tuesday: Patchy drizzle before 11am.  Mostly cloudy, then gradually becoming sunny, with a high near 76. West wind 5 to 15 mph, with gusts as high as 20 mph.
Patchy
Drizzle then
Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 56. West wind 5 to 10 mph, with gusts as high as 20 mph.
Partly Cloudy

Wednesday

Wednesday: Patchy fog before 11am.  Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Patchy Fog
then Sunny

Wednesday
Night
Wednesday Night: Mostly clear, with a low around 56. West wind 10 to 15 mph becoming light southwest  after midnight. Winds could gust as high as 20 mph.
Mostly Clear

Thursday

Thursday: Sunny, with a high near 81.
Sunny

Thursday
Night
Thursday Night: Mostly clear, with a low around 57.
Mostly Clear

Friday

Friday: Sunny, with a high near 83.
Sunny

Friday
Night
Friday Night: Mostly clear, with a low around 59.
Mostly Clear

Lo 57 °F Hi 76 °F Lo 56 °F Hi 78 °F Lo 56 °F Hi 81 °F Lo 57 °F Hi 83 °F Lo 59 °F

 

Tonight
 
Patchy drizzle after 2am. Patchy fog between 11pm and 2am. Otherwise, mostly cloudy, with a low around 57. West wind 5 to 10 mph.
Tuesday
 
Patchy drizzle before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 76. West wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
 
Partly cloudy, with a low around 56. West wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday
 
Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 78. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
 
Mostly clear, with a low around 56. West wind 10 to 15 mph becoming light southwest after midnight. Winds could gust as high as 20 mph.
Thursday
 
Sunny, with a high near 81.
Thursday Night
 
Mostly clear, with a low around 57.
Friday
 
Sunny, with a high near 83.
Friday Night
 
Mostly clear, with a low around 59.
Independence Day
 
Mostly sunny, with a high near 86.
Saturday Night
 
Mostly clear, with a low around 60.
Sunday
 
Sunny, with a high near 86.
Sunday Night
 
Mostly clear, with a low around 61.
Monday
 
Sunny, with a high near 87.

 

Forecast from NOAA-NWS for Montclair CA.