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Current Weather in Fullerton, CA

Updated: Tue Oct 6th 2026 4:45 AM PDT

Clear

79^°F 26^°C

Feels Like 77^°F / 25^°C

Fullerton, CA weather condition is Clear and 79°F.

Today's Weather in Fullerton,CA

The current weather in Fullerton CA as of 4:45 AM PDT on Tue Oct 6th 2026, has a sky condition of Clear with the visibility of 6 mile(s). It is 79 degrees fahrenheit but feels like 77 degrees with a forecasted high of 98 and low of 77. The barometric pressure is 29.83 - measured by inches of mercury - and is steady since its last observation. The humidity is 39 percent that's rising since the last report, with a dew point of 52 degrees fahrenheit which is steady. Wind direction is from the Southeast at 3.6 miles per hour, gusting at 4 miles per hour. Sunrise is at 6:49 AM and Sunset is at 6:29 PM. The moon phase is a Waning Crescent moon rising at 2:13 AM with 16% illumination. Thank you for listening to the weather report from LocalConditions.com!

Listen to this weather report - press Read

Barometer 29.83 inHg. falling
Humidity 39% rising
Heat Index 79°F
Wind from SE. 3.6 mph
Wind Gust 4 miles per hour
Wind Chill 79°F
UV Index 0

Dew Point 52°F steady
Visibility 6 mi.
Sunrise 6:49 AM
Sunset 6:29 PM
Moonrise 2:13 AM
Moonset 4:10 PM
Moon Phase Waning Crescent Moon 16%

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Radar Alerts Next 48 Hours Traffic

Hourly Forecast - Next 8 hours

10 Day Forecast

Sunny

Sunny with a high of 98°F and a low of 77°F. Winds will be light at 10mph at times. Humidity levels are comfortable, sitting around 32%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 98° \| Lo 77°	32%	0%	0%	9.8 mph

Sunny

Sunny with a high of 95°F and a low of 75°F. 1% possible chance of rain predicted. Winds will be light at 9mph at times. Humidity levels are comfortable, sitting around 37%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 95° \| Lo 75°	37%	1%	0%	8.5 mph

Sunny

Sunny with a high of 94°F and a low of 74°F. 1% possible chance of rain predicted. Winds will be light at 10mph at times. Humidity levels are comfortable, sitting around 38%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 94° \| Lo 74°	38%	1%	0%	9.4 mph

Sunny

Sunny with a high of 92°F and a low of 72°F. 1% possible chance of rain predicted. Winds will be light at 9mph at times. Humidity levels are comfortable, sitting around 38%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 92° \| Lo 72°	38%	1%	0%	8.1 mph

Sunny

Sunny with a high of 90°F and a low of 71°F. 4% possible chance of rain predicted. Winds will be light at 10mph at times. Humidity levels are comfortable, sitting around 41%.

Temperature	Humidity	Rainfall	Snow	Wind
Hi 90° \| Lo 71°	41%	4%	0%	9.4 mph

Yesterday 5-Day 10-Day

Weather Radar Map

Live Fullerton, CA weather with granular precipitation, radar, barometric pressure, temperatures and wind speeds for today thru Saturday, as you toggle through each map layer. Use the slider to move forward and back in time to view how current data and forecasts will affect the region; you can press or click on the map to show metrics available for each tab. The related timestamp is located above the Play button which will animate the weather forecast.

Hourly Temperature

The current temperature today is 79^°F. The morning temperature of 77°^F is lowest at 6am with the daytime high of 98°^F at 2pm and a low around 81°^F at 11pm is expected.

Hourly Barometric Pressure

The highest pressure today is 29.87^inHg at 9am and lowest being 29.76^inHg at 3pm.

Hourly Wind Speeds

The fastest wind is reported to be 9.8^mph at 3pm, while the slowest is 1.1^mph around 9am; expect wind gusts peaking 21^mph at 3pm.

More Weather Charts

Current National Weather

Rain and Heatwave Alert Across the US - 10-06 to 10-08

Updated Tue Oct 6th 2026, 2:23am PDT

We're seeing quite a bit of rain in Northern and Central Florida, with potential for flash flooding as showers and storms hang around. Meanwhile, Central and Southern California will continue to experience a heatwave, with temperatures hitting the 90s and even reaching the 100s in some areas. The Great Lakes and Northeast are feeling a cool autumn breeze. This pattern is due to a cold front and high pressure system moving in.

Florida: Persistent Rain and Possible Flooding

For those in Orlando,FL and Jacksonville,FL, be prepared for more rain on Tuesday and Wednesday. We can expect an inch or more of rainfall each day, which might lead to flash flooding in some spots. Keep those umbrellas handy!

California: Heatwave Continues

Residents in Los Angeles,CA and San Diego,CA, we’re looking at a continued heatwave for Tuesday and Wednesday. Temperatures will soar into the 90s, even reaching the lower 100s in places like the Central Valley. Keep cool and hydrated!

Northeast: Autumn Chill

In New York,NY and Boston,MA, a cool autumn air is settling in for Tuesday and Wednesday. Expect temperatures in the 50s and 60s, with morning lows in the 30s and 40s. We could see some frost, so take care of your plants and crops. A cold front might bring showers to interior New England early Thursday.

Midwest: Cool and Dry

For the Midwest, including Detroit,MI and Chicago,IL, Tuesday and Wednesday will bring cool, dry weather. Highs will be in the 60s and 70s, with a brisk autumn feel. Swings in temperature due to a cold front will bring some areas to the upper 30s at night.

Southeast: Warming Up Mid-Week

After a brief cool down, those in Atlanta,GA and Charlotte,NC will notice warmer temperatures returning by Wednesday and Thursday, with highs back in the 80s.

Tropical Update

Finally, keep an eye to the tropics as there's potential for tropical cyclone development in the Southwestern Gulf. Some storms may approach Coastal Louisiana by early Thursday.

This weather report is relevant for ZIP codes from 92831 through 92838, accurately covering all areas within Fullerton, CA.