Current conditions at
Washington Manassas Airport (KHEF)
Lat: 38.72°NLon: 77.52°WElev: 194ft.
Fair
78°F
26°C
| Humidity | 58% |
| Wind Speed | Calm |
| Barometer | 30.13 in (1020.7 mb) |
| Dewpoint | 62°F (17°C) |
| Visibility | 10.00 mi |
| Heat Index | 80°F (27°C) |
| Last update | 21 Aug 11:56 am EDT |
Extended Forecast for
Catharpin VA
This Afternoon
High: 83 °F
Mostly Sunny
Tonight
Low: 65 °F
Mostly Cloudy
then Showers
Likely and
Patchy FogSaturday
High: 79 °F
Showers and
Patchy FogSaturday Night
Low: 65 °F
Chance
T-storms then
Chance
ShowersSunday
High: 84 °F
Mostly Sunny
Sunday Night
Low: 61 °F
Mostly Clear
Monday
High: 82 °F
Sunny
Monday Night
Low: 60 °F
Mostly Clear
Tuesday
High: 81 °F
Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 83. Northeast wind 3 to 6 mph.
Tonight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms before 10am, then showers likely and possibly a thunderstorm between 10am and 1pm, then a chance of showers and thunderstorms after 1pm. Patchy fog before 8am. High near 79. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A chance of showers and thunderstorms, mainly between midnight and 2am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 84. Calm wind becoming northwest 5 to 8 mph in the morning.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 60.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Catharpin VA
38.83°N 77.55°W (Elev. 299 ft)
38.83°N 77.55°W (Elev. 299 ft)
10:52 am EDT Aug 21, 2026
12pm EDT Aug 21, 2026-6pm EDT Aug 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
