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

Tropical Storm Arthur and Heavy Rainfall in the South; Severe Weather in the Midwest

An outbreak of severe thunderstorms is expected across portions of Illinois and Indiana tonight. Intense tornadoes, swaths of damaging gusts, and hail in excess of 2 inches in diameter possible. Tropical Storm Arthur will continue to produce strong winds across coastal Upper Texas and Louisiana tonight, as well as potentially life-threatening flooding across southern Louisiana into Mississippi. Read More >

Current conditions at

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

Lat: 34.98°NLon: 81.06°WElev: 669ft.

Fair

75°F

24°C

Humidity 88%
Wind Speed SW 12 mph
Barometer 29.90 in (1010.9 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Last update 18 Jun 1:54 am EDT
Extended Forecast for

Lancaster Mill SC

  • Overnight

    Overnight: Partly cloudy, with a low around 72. Southwest wind around 9 mph.

    Low: 72 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Mostly cloudy during the morning, then sunny during the afternoon, with a high near 91. Southwest wind 13 to 16 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 91 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 5am, then a slight chance of showers. Low around 69. Southwest wind 6 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 69 °F

    Showers

  • Juneteenth

    Juneteenth: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. West wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 92.

    High: 92 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. Southwest wind around 9 mph.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly cloudy during the morning, then sunny during the afternoon, with a high near 91. Southwest wind 13 to 16 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms before 5am, then a slight chance of showers. Low around 69. Southwest wind 6 to 11 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Juneteenth
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. West wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 89.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 70.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 67. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster Mill SC
 34.71°N 80.82°W (Elev. 427 ft)
Last Update:
2:21 pm EDT Jun 17, 2026
Forecast Valid:
2am EDT Jun 18, 2026-6pm EDT Jun 24, 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