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January 17th, 2026 :: 1:18 am PST   

Local Weather Report for
Costa Mesa
California, United States

 Current Costa Mesa Weather Conditions Updated January 16th at 11:53 pm 
mist
Temperature:55°F Dew Point:55°F
Barometer:30.01 inHg Wind:calm
Humidity:100.0% Visibility:0M
 
 Costa Mesa Weather Forecast Summary  
 
Today
Jan 17th
Sunday
Jan 18th
Monday
Jan 19th
Tuesday
Jan 20th
Wednesday
Jan 21st
Cloudy Cloudy Cloudy Sunny Cloudy
77°F
75°F
57°F
71°F
56°F
72°F
54°F
67°F
51°F
 
 Costa Mesa Detailed Weather Forecast  
 
Saturday, January 17th, 2026
Overnight Temperature: 59°F
A mix of cloudy and clear skies.
Morning Temperature: 75°F
A mix of cloud and sun.
Afternoon Temperature: 68°F
Cloudy.
Evening Temperature: 61°F
Cloudy.
Sunday, January 18th, 2026
Overnight Temperature: 59°F
A mix of cloudy and clear skies.
Morning Temperature: 73°F
Cloudy.
Afternoon Temperature: 65°F
Cloudy.
Evening Temperature: 58°F
Cloudy.
Monday, January 19th, 2026
Overnight Temperature: 56°F
Cloudy.
Morning Temperature: 70°F
Cloudy.
Afternoon Temperature: 64°F
Cloudy.
Evening Temperature: 59°F
A mix of cloudy and clear skies.
Tuesday, January 20th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 63°F
Sunny.
Evening Temperature: 55°F
Clear.
Wednesday, January 21st, 2026
Overnight Temperature: 51°F
A mix of cloudy and clear skies.
Morning Temperature: 66°F
Cloudy.
Afternoon Temperature: 60°F
A mix of cloud and sun.
Evening Temperature: 53°F
Clear.
Thursday, January 22nd, 2026
Overnight Temperature: 52°F
A mix of cloudy and clear skies.
Morning Temperature: 65°F
A mix of cloud and sun.
Afternoon Temperature: 60°F
A mix of cloud and sun.
Evening Temperature: 53°F
Cloudy.
Friday, January 23rd, 2026
Overnight Temperature: 50°F
Cloudy.
Morning Temperature: 61°F
Cloudy.
Afternoon Temperature: 57°F
Sunny.
Evening Temperature: 51°F
Clear.
Saturday, January 24th, 2026
Overnight Temperature: 49°F
Clear.
Morning Temperature: 65°F
Sunny.
Afternoon Temperature: 60°F
Sunny.
Evening Temperature: 54°F
Clear.
Sunday, January 25th, 2026
Overnight Temperature: 52°F
Clear.
Morning Temperature: 68°F
Cloudy.
Afternoon Temperature: 63°F
Cloudy.
Evening Temperature: 56°F
Clear with cloudy periods.





 

  [ Local Weather Report ]
Irvine, CA 
11:53 PM  55°F
mist
 
Newport Beach, CA 
11:53 PM  55°F
mist
 
Santa Ana, CA 
11:53 PM  55°F
mist
 
Fountain Valley, CA 
11:53 PM  55°F
mist
 
Tustin, CA 
11:53 PM  55°F
mist
 
Huntington Beach, CA 
 
Garden Grove, CA 
11:46 PM  50°F
moderate fog
 
Orange, CA 
 
Aliso Viejo, CA 
 
Laguna Woods, CA 

 
This WeatherCity Weather Forecast for Costa Mesa, California, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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