September Bay Area Family Events and Cultural Festivals

September’s peak programming reaches its final major weekend September 25–27, with a broad mix of paid and free family choices including Maker Faire, Good Neighbor Week, Slam Jose!, Discover Family Science Day, Arts & Culture Fest, the 365 Night Market Mid-Autumn Festival, and a Nob Hill outdoor movie. Weather, heat, wind, air quality, possible rain, coastal flooding, and dangerous beach conditions remain important day-of planning factors. A newly reviewed San Mateo County weekly-events article adds no distinct coverage and should not be reposted.