| NWS Forecast for: Fullerton CA Issued by: National Weather Service San Diego, CA Last Update: 12:25 pm PDT Sep 8, 2026 | |
This Afternoon: Sunny, with a high near 96. Light northwest wind becoming west 5 to 10 mph. Tonight: Mostly clear, with a low around 76. West wind around 5 mph becoming calm in the evening. Wednesday: Sunny, with a high near 101. Heat index values as high as 107. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Wednesday Night: Partly cloudy, with a low around 74. Southwest wind around 5 mph becoming calm in the evening. Thursday: Sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon. Thursday Night: Mostly clear, with a low around 71. Friday: Sunny, with a high near 89. Friday Night: Mostly clear, with a low around 68. Saturday: Sunny, with a high near 85. Saturday Night: Mostly clear, with a low around 66. Sunday: Sunny, with a high near 85. Sunday Night: Clear, with a low around 65. Monday: Sunny, with a high near 85. | |
| Fullerton CA 33.87°N 117.93°W (Elev. 184 ft) | |
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