Weather forecast for: Atascadero CA
Last Update: 11:26 am PDT Aug 12, 2026
Tonight: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 53. South southwest wind 5 to 15 mph, with gusts as high as 20 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 74. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Thursday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 52. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Friday: Patchy fog before 11am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 75. Light southwest wind becoming west southwest 5 to 10 mph in the afternoon.
Friday Night: Partly cloudy, with a low around 50. West southwest wind 5 to 10 mph becoming light in the evening.
Saturday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 77.
Saturday Night: Mostly clear, with a low around 50.
Sunday: Mostly sunny, with a high near 79.
Sunday Night: Partly cloudy, with a low around 50.
Monday: Mostly sunny, with a high near 82.
Monday Night: Partly cloudy, with a low around 54.
Tuesday: Mostly sunny, with a high near 87.
Tuesday Night: Partly cloudy, with a low around 55.
Wednesday: Mostly sunny, with a high near 87.