Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Current conditions at

Manassas, Manassas Regional Airport/Harry P. Davis Field (KHEF)

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Fair

84°F

29°C

Humidity 72%
Wind Speed N 8 mph
Barometer 29.97 in (1015.3 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index91°F (33°C)
Last update 4 Jul 4:56 am EDT
Extended Forecast for

3 Miles NE Casanova VA

Extreme Heat Warning July 4, 10:00am until July 4, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  • Independence Day

    Independence Day: Scattered showers and thunderstorms after 3pm.  Increasing clouds and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming southwest around 6 mph in the afternoon.  Chance of precipitation is 30%.

    High: 99 °F

    Sunny then
    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms before 2am, then isolated showers between 2am and 3am.  Mostly cloudy, with a low around 71. Light and variable wind.  Chance of precipitation is 40%.

    Low: 71 °F

    Scattered
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, mainly after 4pm.  Mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon.  Chance of precipitation is 30%.

    High: 94 °F

    Sunny then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am.  Mostly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm  in the evening.  Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, then showers and possibly a thunderstorm after 2pm.  High near 88. Light east wind.  Chance of precipitation is 80%.

    High: 88 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers.  Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm.  Partly sunny, with a high near 85. Chance of precipitation is 50%.

    High: 85 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 66. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm.  Partly sunny, with a high near 86. Chance of precipitation is 20%.

    High: 86 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

Detailed Forecast

Independence Day
Scattered showers and thunderstorms after 3pm. Increasing clouds and hot, with a high near 99. Heat index values as high as 111. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 30%.
Tonight
Scattered showers and thunderstorms before 2am, then isolated showers between 2am and 3am. Mostly cloudy, with a low around 71. Light and variable wind. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 103. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 69. Northeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 88. Light east wind. Chance of precipitation is 80%.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 67. Chance of precipitation is 80%.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Wednesday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 20%.
Wednesday Night
A chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 90. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 93. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NE Casanova VA
 38.66°N 77.61°W (Elev. 249 ft)
4:53 am EDT Jul 4, 2026
5am EDT Jul 4, 2026-6pm EDT Jul 10, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database