Heavy Rainfall Continues in Hawaii; Severe Thunderstorms and Heavy Rainfall in the Plains and Southern Appalachians

Areas of gusty winds, heavy rain leading to flash flooding, and high surf continue across portions of Hawaii as Tropical Storm Lala continues to move away from the islands. Severe thunderstorms and heavy rainfall will shift into the southern Appalachians today. Strong to severe thunderstorms may produce large hail, scattered wind gusts, and heavy rain today across the northern and central Plains. Read More >

Current conditions at

Lancaster County-mc Whirter Field (KLKR)

Lat: 34.72°NLon: 80.86°WElev: 486ft.

Fair

86°F

30°C

Humidity 75%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 17 Aug 9:55 am EDT
Extended Forecast for

4 Miles S Fort Lawn SC

Heat Advisory August 17, 12:00pm until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Sunny and hot, with a high near 99. Heat index values as high as 107. Light west wind.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 75. Calm wind.

    Low: 75 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 96. Heat index values as high as 104. Light north northwest wind.

    High: 96 °F

    Hot

  • Tuesday Night

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

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Light north wind.

    High: 96 °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 98.

    High: 98 °F

    Hot

  • Thursday Night

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

    Low: 73 °F

    Partly Cloudy

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 95.

    High: 95 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Sunny and hot, with a high near 99. Heat index values as high as 107. Light west wind.
Tonight
Partly cloudy, with a low around 75. Calm wind.
Tuesday
Sunny and hot, with a high near 96. Heat index values as high as 104. Light north northwest wind.
Tuesday Night
Mostly clear, with a low around 73. Calm wind.
Wednesday
Sunny and hot, with a high near 96. Light north wind.
Wednesday Night
Mostly clear, with a low around 73.
Thursday
Sunny and hot, with a high near 98.
Thursday Night
Partly cloudy, with a low around 73.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95.
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.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Fort Lawn SC
 34.65°N 80.91°W (Elev. 400 ft)
6:14 am EDT Aug 17, 2026
10am EDT Aug 17, 2026-6pm EDT Aug 23, 2026
 
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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