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Irvine, California Weather:
Extreme Heat Watch (Issued when dangerously hot conditions are possible; be prepared for extreme heat and take precautions.)
Thursday, August 21, 2025
Sunny WeatherSunny weather, clear skies and sunny weather.
Day 90°
Night 70°
Precipitation 0 %
Wind 4 mph
UV Index (0 - 11+) 11

Weather Forecast History

Last Year's Weather on This Day (August 21, 2024)

Cloudy WeatherCloudy weather, overcast skies with clouds.

Day

84°

Night

66°

Wind

7 mph

UV Index

9

Precipitation

0