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Fullerton Weather Warning NWS WEATHER ALERT FOR THE FULLERTON, CA AREA - Issued: 1132 AM PDT Sun Oct 4 2026 Fullerton Weather Warning

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92831 Weather (Fullerton, CA)

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Clear at Fullerton (92831), temperature is 99°F37°C, dew point 52°F11°C, humidity 20%. Wind direction is SE at 8 mphat 13 km/h with visibility of 10 mi16 km. Barometric pressure is 29.87 in1012 mb. Last update: 11:46 am.*
*Time is approximately 11:46 am Sun, Oct 04, 2026. Time will be within 15 minutes of current local time. Fullerton weather forecast data is updated every 15 minutes.

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The month of August had turned into a griddle where the days just lay there and sizzled. ―Sue Monk Kidd
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Fullerton CA Weather - 2:46 pm

Fullerton Weather Forecast

Weather forecast for: Fullerton CA
Last Update: 11:27 am PDT Oct 4, 2026
Today: Sunny, with a high near 101. Southwest wind 5 to 10 mph.
Tonight: Clear, with a low around 75. West wind around 5 mph becoming calm.
Monday: Sunny, with a high near 102. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night: Mostly clear, with a low around 75. Southwest wind around 5 mph becoming calm in the evening.
Tuesday: Sunny, with a high near 100. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night: Clear, with a low around 76.
Wednesday: Sunny, with a high near 98.
Wednesday Night: Clear, with a low around 72.
Thursday: Sunny, with a high near 96.
Thursday Night: Mostly clear, with a low around 71.
Friday: Sunny, with a high near 91.
Friday Night: Partly cloudy, with a low around 69.
Saturday: Partly sunny, with a high near 84.

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