If you planning to travel to St. Mary Lake, Glacier National Park, United States, 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 2:34 PM. The temperature feels like 31.349999999999998 with a humidity level of 81 so dress accordingly. Cloud coverage is 48 percent with visibility at 14.9 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 12:00 AM.