20136 Weather (Bristow, VA)

Weather forecast for: Washington Manassas Airport VA

Last Update: 5:53 am EDT Sep 2, 2026

Today: Showers and thunderstorms likely, mainly between 2pm and 5pm. Partly sunny, with a high near 92. Calm wind becoming north around 6 mph in the morning. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, with a low around 73. Southeast wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Thursday: A chance of showers and thunderstorms after 11am. Mostly sunny, with a high near 93. Heat index values as high as 102. Light and variable wind becoming west 5 to 8 mph in the morning. Chance of precipitation is 40%.

Thursday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 74. West wind around 5 mph. Chance of precipitation is 40%.

Friday: A chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 92. Light northwest wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 50%.

Friday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

Saturday: Mostly sunny, with a high near 86.

Saturday Night: Partly cloudy, with a low around 62.

Sunday: Sunny, with a high near 82.

Sunday Night: Mostly clear, with a low around 60.

Labor Day: Mostly sunny, with a high near 82.

Monday Night: Partly cloudy, with a low around 62.

Tuesday: Partly sunny, with a high near 86.