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Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Current conditions at

Union County Airport - Troy Shelton Field (K35A)

Lat: 34.69°NLon: 81.64°WElev: 610ft.

Fair

83°F

28°C

Humidity 73%
Wind Speed NE 3 mph
Barometer 30.08 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 17 Aug 10:15 am EDT
Extended Forecast for

4 Miles SW Buffalo SC

  • Today

    Today: Sunny, with a high near 91. Light north wind.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 94. Heat index values as high as 100. Calm wind.

    High: 94 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 70.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 70 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 91. Light north wind.
Tonight
Mostly clear, with a low around 72. Calm wind.
Monday
Sunny, with a high near 94. Heat index values as high as 100. Calm wind.
Monday Night
A 20 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 72. Calm wind.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 85. Calm wind becoming northeast around 5 mph in the afternoon.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 70.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 88.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 40%.
Friday
Showers and thunderstorms likely. Mostly cloudy, with a high near 83. Chance of precipitation is 60%.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
Saturday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Buffalo SC
 34.69°N 81.73°W (Elev. 499 ft)
Last Update:
6:33 am EDT Aug 17, 2025
Forecast Valid:
10am EDT Aug 17, 2025-6pm EDT Aug 23, 2025
 
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