Weather in Costa Mesa, California
Sunday 15 November 2026
22°
Scattered clouds
Feels like 20°
- High
- 22°
- Low
- 19°
- Humidity
- 55%
- Wind
- 13 km/h
Temperature and rain / Costa Mesa
The coming days
High
24°
Low
13°
Average high
20.5°
Average low
15.6°
Total rain
48.8 mm
Average rain
3.3 mm
Air quality - Costa Mesa
Particles and ozone
Good
7.20 µg/m³
0-1212-3535-5555+
The air is clean: enjoy the outdoors.
PM1010.00µg/m³
Ozone97µg/m³
Data updated hourly
Weather nearby
More cities in United StatesWeather guides
All articles
When does winter start 2026? First day of winter and solsticeWinter 2026 starts in the Northern Hemisphere on Monday, December 21, 2026, at 3:50 p.m. EST (20:50 UTC), the...
What is a DANA in Spain? The cold drop storm explainedA DANA is a cut-off low: a pocket of very cold air high in the atmosphere, about 5,000 to 9,000 meters (16,000...
Yellow, amber and red weather warnings: what each color meansA yellow weather warning means weather that could cause some disruption or danger, usually for specific places...
Other cities
Weather in the country's main cities
Frequently asked questions
Quick answers about the weather in Costa Mesa
Tomorrow in Costa Mesa, expect Heavy rain 🌧️, with:\n\n- High of 22°\n- Low of 16°
Need more information?
Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-13