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Fullerton Weather Warning NWS WEATHER ALERT FOR THE FULLERTON, CA AREA - Issued: 530 AM PDT Sun Aug 2 2026 Fullerton Weather Warning

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92831 Weather (Fullerton, CA)

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Overcast at Fullerton (92831), temperature is 70°F21°C, dew point 66°F19°C, humidity 87%. Wind direction is SSW at 3 mphat 5 km/h with visibility of 10 mi16 km. Barometric pressure is 29.87 in1012 mb. Last update: 5:38 am.*
*Time is approximately 5:38 am Sun, Aug 02, 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 poet may be used as a barometer, but let us not forget that he is also part of the weather. ―Lionel Trilling
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Fullerton CA Weather - 8:38 am

Fullerton Weather Forecast

Weather forecast for: Fullerton CA
Last Update: 12:51 am PDT Aug 2, 2026
Today: Sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Tonight: Mostly clear, with a low around 69. South wind around 5 mph becoming calm in the evening.
Monday: Partly sunny, then gradually becoming sunny, with a high near 90. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Monday Night: Increasing clouds, with a low around 68. South wind around 5 mph becoming calm after midnight.
Tuesday: Partly sunny, then gradually becoming sunny, with a high near 89. Light south wind becoming southwest 5 to 10 mph in the afternoon.
Tuesday Night: Mostly clear, with a low around 68.
Wednesday: Sunny, with a high near 88.
Wednesday Night: Mostly clear, with a low around 67.
Thursday: Sunny, with a high near 89.
Thursday Night: Mostly clear, with a low around 69.
Friday: Sunny, with a high near 88.
Friday Night: Mostly clear, with a low around 68.
Saturday: Sunny, with a high near 88.

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