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

Severe Thunderstorm and Heavy Rainfall Threat Tonight; Heat Continues on Tuesday Across the Eastern U.S.

Severe weather and flash flooding threats continue across the Central Plains and Midwest into tonight. Very large hail, strong tornadoes and damaging winds are expected. An early season heat wave will continue to challenge temperature records across the eastern U.S. through Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Front Royal-warren County Airport (KFRR)

Lat: 38.92°NLon: 78.25°WElev: 709ft.

Fair

82°F

28°C

Humidity 50%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 18 May 9:15 pm EDT
Extended Forecast for

Markham VA

  • Tonight

    Tonight: Mostly clear, with a low around 70. Southwest wind around 7 mph.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95. West wind 5 to 7 mph.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. Southwest wind around 7 mph.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm after 2pm. High near 92. West wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 50%.

    High: 65 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Showers likely, mainly after 8am. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers. Low around 52. Chance of precipitation is 80%.

    Low: 52 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 70. Southwest wind around 7 mph.
Tuesday
Mostly sunny, with a high near 95. West wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 70. Southwest wind around 7 mph.
Wednesday
Showers and possibly a thunderstorm after 2pm. High near 92. West wind 3 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 56. North wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Thursday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 50%.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Friday
Showers likely, mainly after 8am. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Friday Night
Showers. Low around 52. Chance of precipitation is 80%.
Saturday
Showers likely. Mostly cloudy, with a high near 69. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 57. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Markham VA
 38.9°N 78.03°W (Elev. 732 ft)
Last Update:
7:53 pm EDT May 18, 2026
Forecast Valid:
9pm EDT May 18, 2026-6pm EDT May 25, 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