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Fullerton, CA Weather

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7 PM

87°

RealFeel® 86°

Very Warm

RealFeel Guide

Very Warm

82° to 89°

Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.

0%

Sunny

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™86°

Heat Index88°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.5 (Low)

Wind Gusts9 mph

Humidity45%

Indoor Humidity45% (Humid)

Dew Point63° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling33400 ft

8 PM

84°

RealFeel® 83°

Very Warm

RealFeel Guide

Very Warm

82° to 89°

Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.

0%

Clear

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

Heat Index85°

WindWSW 6 mph

Air QualityPoor

Wind Gusts6 mph

Humidity48%

Indoor Humidity48% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

81°

RealFeel® 81°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

Heat Index83°

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

79°

RealFeel® 79°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

WindSSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity63%

Indoor Humidity63% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

76°

RealFeel® 76°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

WindSSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity71%

Indoor Humidity71% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Fullerton

AccuWeather's hourly forecast for Fullerton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 87° with a RealFeel® of 86°, sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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