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Current Weather Conditions for Thornhill, VA

Sunny, with a high near 99. Heat index values as high as 108. South wind around 5 mph.
87°F

Conditions

Wind: 2 mph SW
Humidity: 59%
Probability of Precipitation: 0%

Hourly Forcast (next 12 hours)

2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM 11 PM 12 AM 1 AM 2 AM
87° 91° 92° 96° 97° 98° 99° 98° 97° 96° 91° 86° 83°

Upcoming Week

Day Forecast High Low
Today
Sunny
Sunny, with a high near 99. Heat index values as high as 108. South wind around 5 mph.
99°F 79°F
Tonight
Clear
Clear, with a low around 75. Heat index values as high as 106. South wind 1 to 5 mph.
99°F 79°F
Thursday
Sunny
Sunny, with a high near 101. Heat index values as high as 109. Southeast wind 0 to 3 mph.
99°F 79°F
Thursday Night
Clear
Clear, with a low around 76. Heat index values as high as 109. South wind around 2 mph.
99°F 79°F
Friday
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 103. West wind around 2 mph. Chance of precipitation is 20%.
99°F 79°F
Friday Night
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Chance of precipitation is 20%.
99°F 79°F
Independence Day
Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 100. Chance of precipitation is 50%.
99°F 79°F
Saturday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Chance of precipitation is 50%.
99°F 79°F
Sunday
Mostly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 99. Chance of precipitation is 40%.
99°F 79°F
Sunday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
99°F 79°F
Monday
Showers And Thunderstorms Likely
A slight chance of rain showers between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 95. Chance of precipitation is 60%.
99°F 79°F
Monday Night
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
99°F 79°F
Tuesday
Partly Sunny then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 40%.
99°F 79°F
Tuesday Night
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68.
99°F 79°F
Data provided by weather.gov