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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. 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.

Fair

73°F

23°C

Humidity 96%
Wind Speed Calm
Barometer 29.93 in (1013.8 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 17 Aug 10:56 pm EDT
Extended Forecast for

2 Miles NNE Haymarket VA

  • Tonight

    Tonight: Mostly cloudy, with a low around 69. Northwest wind 3 to 5 mph.

    Low: 69 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 78. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 78 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after 8pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 65. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: A chance of showers, mainly after 2pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 76. East wind around 6 mph. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers and
    Patchy Fog

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 66. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 69. Northwest wind 3 to 5 mph.
Monday
A chance of showers, mainly between 2pm and 5pm. Mostly cloudy, with a high near 78. Northeast wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Monday Night
A chance of showers, mainly after 8pm. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 65. Northeast wind 3 to 7 mph. Chance of precipitation is 30%.
Tuesday
A chance of showers, mainly after 2pm. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 76. East wind around 6 mph. Chance of precipitation is 30%.
Tuesday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 66. East wind around 6 mph becoming calm after midnight. Chance of precipitation is 30%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 82.
Thursday Night
Partly cloudy, with a low around 64.
Friday
Mostly sunny, with a high near 84.
Friday Night
Partly cloudy, with a low around 65.
Saturday
A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NNE Haymarket VA
 38.84°N 77.64°W (Elev. 361 ft)
Last Update:
10:29 pm EDT Aug 17, 2025
Forecast Valid:
11pm EDT Aug 17, 2025-6pm EDT Aug 24, 2025
 
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