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

Lake Anna Airport (K7W4)

Lat: 37.97°NLon: 77.75°WElev: 351ft.

Fair

45°F

7°C

Humidity 41%
Wind Speed SW 7 mph
Barometer 29.74 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 14 Jan 3:35 am EST
Extended Forecast for

4 Miles SSW Thornburg VA

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 45. Southwest wind around 8 mph.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 56. Southwest wind 6 to 9 mph.

    High: 56 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: A chance of rain showers before 2am, then a chance of snow showers between 2am and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 27. Southwest wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Showers then
    Chance
    Rain/Snow

  • Thursday

    Thursday: Sunny, with a high near 33. Northwest wind 13 to 15 mph, with gusts as high as 24 mph.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 17. West wind 5 to 9 mph.

    Low: 17 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 30.

    Low: 30 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain and snow before 1pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 45. Southwest wind around 8 mph.
Wednesday
Increasing clouds, with a high near 56. Southwest wind 6 to 9 mph.
Wednesday Night
A chance of rain showers before 2am, then a chance of snow showers between 2am and 4am. Cloudy, then gradually becoming partly cloudy, with a low around 27. Southwest wind 7 to 11 mph becoming northwest after midnight. Chance of precipitation is 40%. Little or no snow accumulation expected.
Thursday
Sunny, with a high near 33. Northwest wind 13 to 15 mph, with gusts as high as 24 mph.
Thursday Night
Mostly clear, with a low around 17. West wind 5 to 9 mph.
Friday
Mostly sunny, with a high near 39.
Friday Night
Partly cloudy, with a low around 30.
Saturday
A chance of rain and snow before 1pm. Partly sunny, with a high near 46. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 34.
Sunday Night
Mostly clear, with a low around 18.
M.L.King Day
Sunny, with a high near 37.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Thornburg VA
 38.07°N 77.53°W (Elev. 243 ft)
Last Update:
3:04 am EST Jan 14, 2026
Forecast Valid:
3am EST Jan 14, 2026-6pm EST Jan 20, 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