If you planning to travel to Lake Fairfax Park, Reston, Virginia, 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 12:15 PM. The temperature feels like 29.700000000000003 with a humidity level of 48 so dress accordingly. Cloud coverage is 39 percent with visibility at 15 percent. Today’s UV index is 1, don’t forget the sunscreen if you need it! Today’s winds are traveling southwest at a speed of 6 MPH. At the end of the day don’t miss the sunset at 9:47 PM.