NWS Forecast for Mission Viejo CA

National Weather Service Forecast for: Mission Viejo CA
Issued by: National Weather Service San Diego, CA

Updated: 12:29 am PDT Jun 22, 2026

Overnight Patchy Fog	Monday Patchy Fog then Sunny	Monday Night Patchy Fog	Tuesday Patchy Fog then Mostly Sunny	Tuesday Night Patchy Fog	Wednesday Patchy Fog then Mostly Sunny	Wednesday Night Patchy Fog	Thursday Patchy Fog then Sunny	Thursday Night Partly Cloudy
Lo 59 °F	Hi 77 °F	Lo 60 °F	Hi 82 °F	Lo 63 °F	Hi 83 °F	Lo 61 °F	Hi 81 °F	Lo 60 °F

Air Quality Alert

Overnight	Patchy fog. Otherwise, mostly cloudy, with a low around 59. Calm wind.
Monday	Patchy fog before 11am. Otherwise, mostly cloudy through mid morning, then gradual clearing, with a high near 77. Light northwest wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night	Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 60. West wind around 5 mph becoming calm in the evening.
Tuesday	Patchy fog before 11am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 82. Light northwest wind becoming west 5 to 10 mph in the afternoon.
Tuesday Night	Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening.
Wednesday	Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83.
Wednesday Night	Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 61.
Thursday	Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81.
Thursday Night	Partly cloudy, with a low around 60.
Friday	Partly sunny, then gradually becoming sunny, with a high near 81.
Friday Night	Increasing clouds, with a low around 59.
Saturday	Mostly sunny, with a high near 80.
Saturday Night	Increasing clouds, with a low around 60.
Sunday	Cloudy through mid morning, then gradual clearing, with a high near 74.

Forecast from NOAA-NWS for Mission Viejo CA.