| NWS Forecast for: Fullerton CA Issued by: National Weather Service San Diego, CA Last Update: 1:14 am PDT Sep 10, 2026 | |
Today: Sunny, with a high near 98. Heat index values as high as 105. Light south wind becoming southwest 5 to 10 mph in the afternoon. Tonight: Mostly clear, with a low around 72. Southwest wind around 5 mph becoming calm in the evening. Friday: Sunny, with a high near 91. Light and variable wind becoming southwest 5 to 10 mph in the morning. Friday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 69. South wind around 5 mph. Saturday: Patchy fog before 11am. Otherwise, partly sunny, then gradually becoming sunny, with a high near 84. South wind 5 to 10 mph. Saturday Night: Mostly clear, with a low around 66. Sunday: Patchy fog before 11am. Otherwise, sunny, with a high near 83. Sunday Night: Mostly clear, with a low around 66. Monday: Sunny, with a high near 82. Monday Night: Mostly clear, with a low around 64. Tuesday: Sunny, with a high near 80. Tuesday Night: Mostly clear, with a low around 63. Wednesday: Sunny, with a high near 82. | |
| Fullerton CA 33.87°N 117.93°W (Elev. 184 ft) | |
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