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Fullerton, CA

92°F
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Fullerton

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92°
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Fullerton, CA Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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2 PM

91°
RealFeel® 99°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
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rain drop 0%
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Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™91°

Heat Index94°

WindWSW 8 mph

Air QualityPoor

Max UV Index8.4 (Very High)

Wind Gusts15 mph

Humidity45%

Indoor Humidity45% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling33300 ft

3 PM

93°
RealFeel® 98°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
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Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™92°

Heat Index96°

WindWSW 9 mph

Air QualityPoor

Max UV Index6.1 (High)

Wind Gusts14 mph

Humidity41%

Indoor Humidity41% (Humid)

Dew Point66° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

94°
RealFeel® 97°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™93°

Heat Index96°

WindWSW 9 mph

Air QualityPoor

Max UV Index4.2 (Moderate)

Wind Gusts13 mph

Humidity37%

Indoor Humidity37% (Humid)

Dew Point65° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

93°
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™91°

Heat Index93°

WindWSW 8 mph

Air QualityPoor

Max UV Index2.6 (Moderate)

Wind Gusts13 mph

Humidity36%

Indoor Humidity36% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

90°
RealFeel® 90°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
rain drop 0%
Chevron down
Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™88°

Heat Index91°

WindWSW 8 mph

Air QualityPoor

Max UV Index1.6 (Low)

Wind Gusts10 mph

Humidity39%

Indoor Humidity39% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™10 (Very Bright)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

88°
RealFeel® 87°
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.
LEARN MORE
rain drop 0%
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Sunny
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

RealFeel Shade™87°

Heat Index88°

WindWSW 7 mph

Air QualityPoor

Max UV Index0.5 (Low)

Wind Gusts9 mph

Humidity42%

Indoor Humidity42% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 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.
LEARN MORE
rain drop 0%
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Clear
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

Heat Index85°

WindWSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity49%

Indoor Humidity49% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

81°
RealFeel® 80°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
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Clear
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

Heat Index82°

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity55%

Indoor Humidity55% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

78°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

WindSSW 5 mph

Air QualityFair

Wind Gusts6 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point64° 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.
LEARN MORE
rain drop 0%
Chevron down
Clear
alerts

Heat Advisory

10:00 AM Saturday - 10:00 AM Tuesday

WindSSW 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity69%

Indoor Humidity69% (Humid)

Dew Point65° 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 91° with a RealFeel® of 99°, 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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