If you planning to travel to Heard Natural Science Museum and Wildlife Sanctuary, McKinney, Texas, 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 1:21 PM. The temperature feels like 49.55 with a humidity level of 62 so dress accordingly. Cloud coverage is 8 percent with visibility at 13.3 percent. Today’s UV index is 4, don’t forget the sunscreen if you need it! Today’s winds are traveling west-northwest at a speed of 11 MPH. At the end of the day don’t miss the sunset at 11:58 PM.