Local Forecast for Orange County, CA Currently 54.0°F HI: 65.0°F LO: 48.0°F Extended Forecast Overnight Showers likely. Mostly cloudy, with a low around 48. South wind 5 to 10 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible. Friday Mostly sunny, with a high near 65. Calm wind becoming southwest around 5 mph in the afternoon. Friday Night Partly cloudy, with a low around 45. Calm wind becoming north around 5 mph. Saturday Mostly sunny, with a high near 70. Calm wind becoming northwest around 5 mph in the afternoon. Saturday Night Partly cloudy, with a low around 47. Calm wind becoming north around 5 mph. Sunday Mostly sunny, with a high near 73. Sunday Night Partly cloudy, with a low around 47. M.L.King Day Mostly sunny, with a high near 69. Monday Night Partly cloudy, with a low around 48. Tuesday A slight chance of showers. Partly sunny, with a high near 68. Tuesday Night Mostly cloudy, with a low around 49. Wednesday Sunny, with a high near 67. Wednesday Night Mostly clear, with a low around 48.