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

Hazardous Weather Conditions

Current conditions at

Rock Hill, Rock Hill - York County Airport (KUZA)

Lat: 34.98°NLon: 81.06°WElev: 669ft.

Fair

82°F

28°C

Humidity 82%
Wind Speed Calm
Barometer 30.03 in (1015.1 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 17 Aug 8:54 am EDT
Extended Forecast for

Lancaster Mill SC

Heat Advisory August 17, 09:01am until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 17, 09:01am until August 17, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • Today

    High: 100 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Partly cloudy, with a low around 77. Calm wind.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming north around 5 mph.

    High: 96 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73. Light north wind.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Northeast wind around 5 mph becoming calm in the morning.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 99.

    High: 99 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy

Detailed Forecast

Today
A slight chance of showers and thunderstorms after 3pm. Sunny and hot, with a high near 100. Heat index values as high as 109. Light west wind. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 77. Calm wind.
Tuesday
Sunny, with a high near 96. Heat index values as high as 105. Calm wind becoming north around 5 mph.
Tuesday Night
Mostly clear, with a low around 73. Light north wind.
Wednesday
Sunny and hot, with a high near 97. Northeast wind around 5 mph becoming calm in the morning.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny and hot, with a high near 99.
Thursday Night
Partly cloudy, with a low around 73.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 8pm, then showers likely between 8pm and 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Sunday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lancaster Mill SC
 34.71°N 80.82°W (Elev. 427 ft)
Last Update:
8:46 am EDT Aug 17, 2026
Forecast Valid:
9am EDT Aug 17, 2026-6pm EDT Aug 23, 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