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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Union County Airport - Troy Shelton Field (K35A)

Lat: 34.69°NLon: 81.64°WElev: 610ft.

Fair

79°F

26°C

Humidity 84%
Wind Speed Calm
Barometer 30.09 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 3 Oct 5:55 pm EDT
Extended Forecast for

Union SC

  • Tonight

    Tonight: Rain and thunderstorms likely. Patchy fog after 11pm. Otherwise, cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Rain Likely
    and Patchy
    Fog

  • Sunday

    Sunday: A 40 percent chance of rain, mainly after 2pm. Patchy fog before 1pm. Otherwise, cloudy, with a high near 70. Light north northeast wind. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Chance Rain
    and Patchy
    Fog

  • Sunday Night

    Sunday Night: Rain likely, mainly before 2am. Patchy fog before 8pm. Otherwise, cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Rain Likely
    and Patchy
    Fog

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.

    High: 77 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Mostly clear, with a low around 55. Calm wind becoming north northeast around 5 mph after midnight.

    Low: 55 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain and thunderstorms likely. Patchy fog after 11pm. Otherwise, cloudy, with a low around 61. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A 40 percent chance of rain, mainly after 2pm. Patchy fog before 1pm. Otherwise, cloudy, with a high near 70. Light north northeast wind. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain likely, mainly before 2am. Patchy fog before 8pm. Otherwise, cloudy, with a low around 62. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 77. Calm wind becoming northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 55. Calm wind becoming north northeast around 5 mph after midnight.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 51.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 52.
Saturday
Partly sunny, with a high near 75.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Union SC
 34.73°N 81.62°W (Elev. 600 ft)
Last Update:
2:23 pm EDT Oct 3, 2026
Forecast Valid:
6pm EDT Oct 3, 2026-6pm EDT Oct 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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