Weather in Fullerton, California
Tuesday 24 November 2026
21°
Overcast
Feels like 18°
- High
- 21°
- Low
- 15°
- Humidity
- 31%
- Wind
- 7 km/h
Temperature and rain / Fullerton
The coming days
High
31°
Low
13°
Average high
21.7°
Average low
15.9°
Total rain
31.0 mm
Average rain
2.1 mm
Air quality - Fullerton
Particles and ozone
Moderate
15.70 µg/m³
0-1212-3535-5555+
Acceptable; sensitive people should take care.
PM1016.80µg/m³
Ozone58µg/m³
Data updated hourly
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Frequently asked questions
Quick answers about the weather in Fullerton
Tomorrow in Fullerton, expect Scattered clouds ⛅, with:\n\n- High of 25°\n- Low of 15°
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Our data is updated regularly to give you the most reliable forecast.
Last updated: 2026-11-12