Weather in Fullerton, United States 🇺🇸
Current Weather in Fullerton
In Fullerton right now it is 32°C and partly cloudy, feeling like 33°C. Humidity sits at 42% and winds are near 16 km/h, and the UV index is 3 (moderate). Over the next few days, temperatures in Fullerton range from about 23°C to 45°C. ⚠️ Heat Advisory issued September 9 at 2:58AM PDT until September 10 at 8:00PM PDT by NWS San Diego CA
Hourly Forecast for Fullerton
14-Day Forecast for Fullerton
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Additional Forecasts for Fullerton
Air Quality
Historical Weather
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Best Time to Be Outside in Fullerton Tomorrow
There is no good daylight window left in Fullerton today. Tomorrow, the most comfortable window looks like 07:00 to 10:00, 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 Fullerton
What is the temperature in Fullerton right now?
It is currently 32°C (90°F) in Fullerton, partly cloudy (feels like 33°C).
What's the weather like in Fullerton right now?
Conditions in Fullerton right now: Partly Cloudy, humidity 42%, wind 16 km/h WSW.
What is today's forecast for Fullerton?
Today in Fullerton: high 45°C, low 25°C, sunny. Chance of rain: 5%.
What is the 7-day weather forecast for Fullerton?
Daily highs and lows for Fullerton:
- 2026-09-09: 45°C / 25°C
- 2026-09-10: 29°C / 24°C
- 2026-09-11: 27°C / 23°C
- 2026-09-12: 25°C / 21°C
- 2026-09-13: 24°C / 20°C
- 2026-09-14: 24°C / 21°C
- 2026-09-15: 24°C / 20°C
Is it going to rain in Fullerton today?
There is a 5% chance of rain in Fullerton today.
What is the wind speed in Fullerton right now?
Wind in Fullerton is currently 16 km/h (10 mph) from the WSW.
What is the UV index in Fullerton right now?
The UV index in Fullerton is currently 3.4 (moderate). Sun protection is recommended when the index is 3 or higher.
