| NWS Forecast for: Fullerton CA Issued by: National Weather Service San Diego, CA Last Update: 12:15 pm PDT Sep 16, 2026 |  |
| Tonight: Mostly cloudy, with a low around 65. Southwest wind around 5 mph becoming calm in the evening. Thursday: Partly sunny, then gradually becoming sunny, with a high near 79. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Thursday Night: Partly cloudy, with a low around 63. Southwest wind around 5 mph becoming calm in the evening. Friday: Partly sunny, then gradually becoming sunny, with a high near 80. Light south wind becoming southwest 5 to 10 mph in the afternoon. Friday Night: Mostly clear, with a low around 65. Southwest wind around 5 mph becoming calm in the evening. Saturday: Sunny, with a high near 83. Saturday Night: Mostly clear, with a low around 66. Sunday: Mostly sunny, with a high near 82. Sunday Night: Partly cloudy, with a low around 65. Monday: Mostly sunny, with a high near 81. Monday Night: Mostly clear, with a low around 64. Tuesday: Mostly sunny, with a high near 82. Tuesday Night: Mostly clear, with a low around 65. Wednesday: Sunny, with a high near 84. | |
| Fullerton CA 33.87°N 117.93°W (Elev. 184 ft) | |
Visit your local NWS office at: https://www.weather.gov/sgx |
