National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat Wave Continues; Areas of Severe Thunderstorms Today

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing on the eastern U.S. through the Independence Day weekend. Peak heat indices of up to 115 degrees are possible. Strong to severe thunderstorms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians today. Read More >

Hazardous Weather Conditions

Current conditions at

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

Lat: 38.72°NLon: 77.52°WElev: 194ft.

Mostly Cloudy

77°F

25°C

Humidity 96%
Wind Speed SE 3 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint 76°F (24°C)
Visibility 7.00 mi
Heat Index78°F (26°C)
Last update 2 Jul 6:56 am EDT
Extended Forecast for

Haymarket VA

Extreme Heat Warning July 2, 10:00am until July 2, 08:00pm
Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
Extreme Heat Warning

  • Today

    Today: Sunny and hot, with a high near 101. Heat index values as high as 110. Calm wind becoming north around 5 mph in the afternoon.

    High: 101 °F

    Hot

  • Tonight

    Tonight: Clear, with a low around 77. Light and variable wind.

    Low: 77 °F

    Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 102. Heat index values as high as 111. Light west wind. Chance of precipitation is 20%.

    High: 102 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 76. Calm wind.

    Low: 76 °F

    Partly Cloudy

  • Independence Day

    Independence Day: Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 99. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%.

    High: 99 °F

    Sunny then
    T-storms
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

    Low: 73 °F

    T-storms
    Likely

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 95. Chance of precipitation is 60%.

    High: 95 °F

    Mostly Sunny
    then Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Showers
    Likely

  • Monday

    Monday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.

    High: 90 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Today
Sunny and hot, with a high near 101. Heat index values as high as 110. Calm wind becoming north around 5 mph in the afternoon.
Tonight
Clear, with a low around 77. Light and variable wind.
Friday
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 102. Heat index values as high as 111. Light west wind. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 76. Calm wind.
Independence Day
Showers and thunderstorms likely after 2pm. Mostly sunny and hot, with a high near 99. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely, mainly before 8pm. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 95. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 70%.
Monday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Haymarket VA
 38.82°N 77.64°W (Elev. 348 ft)
Last Update:
7:53 am EDT Jul 2, 2026
Forecast Valid:
7am EDT Jul 2, 2026-6pm EDT Jul 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation