Weather forecast for: Fairfax VA
Last Update: 4:53 pm EDT Sep 11, 2026
Tonight: Mostly cloudy, with a low around 68. Light southeast wind.
Saturday: A slight chance of showers before 10am, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 83. Southeast wind 3 to 8 mph. Chance of precipitation is 50%.
Saturday Night: A chance of showers and thunderstorms before 11pm, then showers likely and possibly a thunderstorm between 11pm and 5am, then showers likely after 5am. Mostly cloudy, with a low around 69. South wind 3 to 5 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday: A chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm. Partly sunny, with a high near 86. Light and variable wind becoming west around 6 mph in the morning. Chance of precipitation is 30%.
Sunday Night: Partly cloudy, with a low around 68. Calm wind becoming northwest around 5 mph after midnight.
Monday: Mostly sunny, with a high near 81.
Monday Night: Mostly clear, with a low around 56.
Tuesday: Mostly sunny, with a high near 77.
Tuesday Night: Mostly clear, with a low around 60.
Wednesday: Sunny, with a high near 82.
Wednesday Night: Mostly clear, with a low around 63.
Thursday: A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Thursday Night: A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Friday: A slight chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 20%.