If you planning to travel to Cornwall Square, Cornwall, 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 12:30 PM. The temperature feels like 30.9 with a humidity level of 84 so dress accordingly. Cloud coverage is 66 percent with visibility at 11.3 percent. Today’s UV index is 0, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 15 MPH. At the end of the day don’t miss the sunset at 9:18 PM.