Weather in Costa Mesa, United States 🇺🇸
Weather Forecast in Costa Mesa
Costa Mesa currently sits at 22°C, clear, feeling like 25°C. Expect 84% humidity and winds of about 6 km/h, and the UV index is 0 (low). Across the coming days, Costa Mesa should see roughly 19°C to 27°C. ⚠️ Heat Advisory issued July 20 at 12:11PM PDT until July 27 at 8:00PM PDT by NWS San Diego CA
Hourly Forecast for Costa Mesa
14-Day Forecast for Costa Mesa
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Additional Forecasts for Costa Mesa
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Best Time to Be Outside in Costa Mesa Today
The most comfortable window in Costa Mesa today looks like 18:00 to 18:00, when it is around 25°C. It should stay dry through that window. No significant rain is expected in the next several hours.
Frequently Asked Questions about Weather in Costa Mesa
What is the temperature in Costa Mesa right now?
Costa Mesa is sitting at 22°C (72°F) right now, clear (feels like 25°C).
What's the weather like in Costa Mesa right now?
Current weather in Costa Mesa: Clear, humidity 84%, wind 6 km/h S.
What is today's forecast for Costa Mesa?
Today in Costa Mesa: high 26°C, low 19°C, sunny. Chance of rain: 7%.
What is the 7-day weather forecast for Costa Mesa?
Daily highs and lows for Costa Mesa:
- 2026-07-21: 26°C / 19°C
- 2026-07-22: 26°C / 22°C
- 2026-07-23: 27°C / 21°C
- 2026-07-24: 27°C / 22°C
- 2026-07-25: 28°C / 23°C
- 2026-07-26: 28°C / 23°C
- 2026-07-27: 27°C / 23°C
Is it going to rain in Costa Mesa today?
There is a 7% chance of rain in Costa Mesa today.
What is the wind speed in Costa Mesa right now?
Wind in Costa Mesa is currently 6 km/h (4 mph) from the S.
What is the UV index in Costa Mesa right now?
The UV index in Costa Mesa is currently 0 (low). Sun protection is recommended when the index is 3 or higher.
