Weather in Costa Mesa, California
Friday 6 November 2026 | 23:58
24°
Clear sky
Feels like 24°
- High
- 29°
- Low
- 12°
- Humidity
- 53%
- Wind
- 11 km/h
Costa Mesa: the next 12 hours at a glance
- No rain expected in the next 12 hours.
- Up to 27° around 10:00.
- Best time to go out: around 10:00 (27°).
Temperature and rain / Costa Mesa
The coming days
High
29°
Low
12°
Average high
26.3°
Average low
18.9°
Total rain
2.4 mm
Average rain
0.2 mm
Air quality - Costa Mesa
Particles and ozone
Moderate
14.00 µg/m³
0-1212-3535-5555+
Acceptable; sensitive people should take care.
PM1015.90µg/m³
Ozone50µg/m³
Data updated hourly
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Frequently asked questions
Quick answers about the weather in Costa Mesa
Tomorrow in Costa Mesa, expect Clear sky ☀️, with:\n\n- High of 29°\n- Low of 16°
Need more information?
Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-07