Posted in Web Fairfax, VA Weather Conditions | Weather Underground October 7, 2023 7% Precip. / 0.00in. Plentiful sunshine. High 41F. Winds SSW at 5 to 10 mph. Tomorrow night Mon 01/22 Low 21 °F. 6% Precip. / 0in. A few clouds overnight. Low 21F. Winds light and variable. Read More