ForecastSan Mateo, CAIs it too cold outside todayIs it too cold outside today in San Mateo, CADo I need a coat tomorrow?Can I wear shorts today?Is it hoodie weather?Heat risk today?Do I need a jacket today?When is UV highest today?Do I need an umbrella tomorrow?Do I need a coat today?Is it too hot outside tomorrow?UV index today?Is it sweater weather?Do I need sunscreen tomorrow?Do I need a hoodie tomorrow?What to wear today?What to wear tomorrow?Is it too cold outside tomorrow?Is it too hot outside today?Can I wear shorts tomorrow?Rain forecast tomorrow?When is UV highest tomorrow?Rain forecast today?UV index tomorrow?Can I wear a t-shirt tomorrow?Will it rain today?Do I need sunscreen today?Will it rain tomorrow?Can I wear a t-shirt today?Do I need a hoodie today?Do I need a jacket tomorrow?Do I need an umbrella today?Heat risk tomorrow?Wind ChillSafeNo wind chill risk.TodayTomorrowExtreme dangerDangerExtreme cautionCautionSafe11AM4PM8PM12AM4AM6AMSafe