| National Weather Service Forecast for:
Fullerton CA Issued by: National Weather Service San Diego, CA |
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| Updated: 12:05 pm PDT Jul 12, 2026 | ||||||||||||||||||
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| Tonight |
Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening. |
| Monday |
Mostly sunny, with a high near 86. Light west wind becoming southwest 5 to 10 mph in the afternoon. |
| Monday Night |
Partly cloudy, with a low around 68. Southwest wind around 5 mph becoming calm in the evening. |
| Tuesday |
Mostly sunny, with a high near 92. Light southwest wind increasing to 5 to 10 mph in the afternoon. |
| Tuesday Night |
Mostly clear, with a low around 72. Southwest wind 5 to 10 mph becoming light south after midnight. |
| Wednesday |
Sunny, with a high near 98. |
| Wednesday Night |
Mostly clear, with a low around 75. |
| Thursday |
Mostly sunny, with a high near 93. |
| Thursday Night |
Partly cloudy, with a low around 71. |
| Friday |
Mostly sunny, with a high near 88. |
| Friday Night |
A slight chance of showers. Partly cloudy, with a low around 70. |
| Saturday |
A slight chance of showers. Mostly sunny, with a high near 88. |
| Saturday Night |
Mostly clear, with a low around 70. |
| Sunday |
Mostly sunny, with a high near 87. |
Forecast from NOAA-NWS for Fullerton CA.
