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

Hazardous Weather Conditions

Current conditions at

Lake Anna Airport (K7W4)

Lat: 37.97°NLon: 77.75°WElev: 351ft.

Fair

76°F

24°C

Humidity 94%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 2 Sep 8:55 pm EDT
Extended Forecast for

Louisa VA

Heat Advisory September 2, 09:27pm until September 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory September 2, 09:27pm until September 3, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Tonight

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms then
    Mostly Clear

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. Heat index values as high as 100. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 72. Light and variable wind.
Thursday
A chance of showers and thunderstorms, mainly after 5pm. Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 73. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 93. Heat index values as high as 100. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 60.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Partly cloudy, with a low around 64.
Wednesday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Louisa VA
 38.02°N 78°W (Elev. 413 ft)
Last Update:
4:04 pm EDT Sep 2, 2026
Forecast Valid:
9pm EDT Sep 2, 2026-6pm EDT Sep 9, 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