If you planning to travel to Thornton, Colorado, here is your 6-day travel weather forecast to make sure you have all the essentials needed during your stay. Start your day when the sunrises at 12:10 PM. The temperature feels like 76.95 with a humidity level of 20 so dress accordingly. Cloud coverage is 8 percent with visibility at 15 percent. Today’s UV index is 10, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 4 MPH. At the end of the day don’t miss the sunset at 1:57 AM.