If you planning to travel to Upper Stewart Lake, Ontario, Canada, 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 2:11 PM. The temperature feels like 10.05 with a humidity level of 94 so dress accordingly. Cloud coverage is 75 percent with visibility at 4 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling south-southwest at a speed of 8 MPH. At the end of the day don’t miss the sunset at 10:17 PM.