National Weather Service Forecast for: Mission Viejo CA
Issued by: National Weather Service San Diego, CA
Updated: 12:51 pm PST Dec 23, 2025
 
Overnight

Overnight: Showers. Low around 56. Southeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Showers

 Wednesday

Wednesday: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 64. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Heavy Rain
and Breezy
 Wednesday
Night
Wednesday Night: Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain

 Christmas
Day
Christmas Day: A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers
Likely
 Thursday
Night
Thursday Night: Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 53. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Showers

 Friday

Friday: Showers, mainly before 10am. High near 62. Chance of precipitation is 90%.
Showers then
Chance
Showers
 Friday
Night
Friday Night: A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Chance
Showers
 Saturday

Saturday: Sunny, with a high near 61.
Sunny

 Saturday
Night
Saturday Night: Clear, with a low around 45.
Clear
Lo 56 °F Hi 64 °F Lo 56 °F Hi 64 °F Lo 53 °F Hi 62 °F Lo 46 °F Hi 61 °F Lo 45 °F

Flood Watch
Wind Advisory
 

Overnight
 
 Showers. Low around 56. Southeast wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 64. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Wednesday Night
 
 Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 56. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Christmas Day
 
 A chance of showers, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 64. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
 
 Showers likely and possibly a thunderstorm, then showers after 10pm. Low around 53. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
 
 Showers, mainly before 10am. High near 62. Chance of precipitation is 90%.
Friday Night
 
 A chance of showers. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Saturday
 
 Sunny, with a high near 61.
Saturday Night
 
 Clear, with a low around 45.
Sunday
 
 Sunny, with a high near 65.
Sunday Night
 
 Clear, with a low around 47.
Monday
 
 Sunny, with a high near 68.
Monday Night
 
 A slight chance of showers. Partly cloudy, with a low around 50.
Tuesday
 
 A slight chance of showers. Mostly sunny, with a high near 70.

 

Forecast from NOAA-NWS for Mission Viejo CA.