ForecastThornton, COIs it too cold outside todayIs it too cold outside today in Thornton, COUV index today?Do I need a coat today?Rain forecast tomorrow?Do I need an umbrella today?Is it sweater weather?UV index tomorrow?Do I need a jacket today?Do I need a coat tomorrow?Heat risk tomorrow?Is it too cold outside tomorrow?Can I wear a t-shirt tomorrow?Will it rain tomorrow?When is UV highest today?Rain forecast today?Heat risk today?What to wear today?What to wear tomorrow?Can I wear a t-shirt today?Can I wear shorts tomorrow?Do I need sunscreen today?Do I need sunscreen tomorrow?Is it too hot outside today?Will it rain today?Do I need a jacket tomorrow?Is it too hot outside tomorrow?Do I need a hoodie today?Do I need an umbrella tomorrow?Do I need a hoodie tomorrow?Can I wear shorts today?Is it hoodie weather?When is UV highest tomorrow?Wind ChillSafeNo wind chill risk.TodayTomorrowExtreme dangerDangerExtreme cautionCautionSafe8PM11PM2AM5AMSafe