Local Forecast for Orange County, CA Currently 57.0°F HI: 69.0°F LO: 51.0°F Extended Forecast Overnight Mostly clear, with a low around 51. Calm wind. Tuesday Sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon. Tuesday Night Mostly clear, with a low around 52. Southeast wind around 5 mph becoming calm in the evening. Wednesday Sunny, with a high near 81. Calm wind becoming west around 5 mph in the afternoon. Wednesday Night Clear, with a low around 59. West wind around 5 mph becoming calm in the evening. Thursday Sunny, with a high near 85. Thursday Night Clear, with a low around 59. Friday Sunny, with a high near 80. Friday Night Patchy fog after 11pm. Otherwise, mostly clear, with a low around 57. Saturday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 74. Saturday Night Patchy fog. Otherwise, increasing clouds, with a low around 56. Sunday Patchy fog. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 72. Sunday Night Patchy fog. Otherwise, partly cloudy, with a low around 54.