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 10:58 AM. The temperature feels like 67.69999999999999 with a humidity level of 84 so dress accordingly. Cloud coverage is 57 percent with visibility at 11.9 percent. Today’s UV index is 6, don’t forget the sunscreen if you need it! Today’s winds are traveling west-southwest at a speed of 7 MPH. At the end of the day don’t miss the sunset at 11:03 PM.