Local Forecast for San Francisco, CA Currently 57.0°F HI: 64°F LO: 50°F Extended Forecast Tonight Mostly clear, with a low around 50. Breezy, with a west northwest wind 18 to 23 mph decreasing to 10 to 15 mph in the evening. Winds could gust as high as 31 mph. Wednesday Sunny, with a high near 64. Breezy, with a north northwest wind 11 to 16 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 31 mph. Wednesday Night Clear, with a low around 51. Breezy, with a west wind 18 to 23 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph. Thursday Sunny, with a high near 64. West wind 9 to 15 mph, with gusts as high as 20 mph. Thursday Night Mostly clear, with a low around 51. West northwest wind 13 to 17 mph, with gusts as high as 23 mph. Friday Mostly sunny, with a high near 66. Friday Night Partly cloudy, with a low around 52. Saturday Mostly sunny, with a high near 65. Saturday Night Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 52. Sunday Patchy fog before 11am. Otherwise, partly sunny, with a high near 66. Sunday Night Mostly cloudy, with a low around 52. Memorial Day Mostly sunny, with a high near 68. Monday Night Mostly cloudy, with a low around 53.