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 11:22 AM. The temperature feels like 74 with a humidity level of 64 so dress accordingly. Cloud coverage is 13 percent with visibility at 13.2 percent. Today’s UV index is 11, don’t forget the sunscreen if you need it! Today’s winds are traveling west at a speed of 11 MPH. At the end of the day don’t miss the sunset at 1:22 AM.