Union County, SC Weather Forecast
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Patchy Fog then Slight Chance Showers And Thunderstorms
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Patchy fog before 9am, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 85. South southwest wind 1 to 5 mph. Chance of precipitation is 20%.
County Weather Overview
This county weather page brings together forecast coverage for Union County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 0 of 0 mapped cities in Union County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 3 to Aug 9, 2026
- Latest sync
- Aug 2, 2026 9:00 PM EDT
- Forecast office
- GSP
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Friday looks like the warmest upcoming period in Union County at 87 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 69 degrees F.
The strongest winds are forecast for Monday at about 1 to 5 mph SSW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 2, 2026 9:00 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- GSP
- Radar station
- KGSP
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 70. West wind around 2 mph. Chance of precipitation is 20%.
A chance of rain showers between 9am and 11am, then showers and thunderstorms. Partly sunny, with a high near 84. East northeast wind around 2 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 69. Northeast wind around 1 mph. Chance of precipitation is 80%.
A chance of rain showers before 11am, then showers and thunderstorms likely. Mostly cloudy, with a high near 85. Chance of precipitation is 70%.
Showers and thunderstorms likely before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A slight chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 50%.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 3
|
Patchy Fog then Slight Chance Showers And Thunderstorms
|
85°F |
1 to 5 mph
SSW
|
|
Monday Night
Aug 3
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
2 mph
W
|
|
Tuesday
Aug 4
|
Showers And Thunderstorms
|
84°F |
2 mph
ENE
|
|
Tuesday Night
Aug 4
|
Showers And Thunderstorms
|
69°F |
1 mph
NE
|
|
Wednesday
Aug 5
|
Showers And Thunderstorms Likely
|
85°F |
0 to 3 mph
S
|
|
Wednesday Night
Aug 5
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
70°F |
1 mph
W
|
|
Thursday
Aug 6
|
Chance Rain Showers then Chance Showers And Thunderstorms
|
86°F |
0 to 3 mph
SSW
|
|
Thursday Night
Aug 6
|
Chance Showers And Thunderstorms
|
70°F |
1 mph
W
|
|
Friday
Aug 7
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
87°F |
2 mph
SSW
|
|
Friday Night
Aug 7
|
Chance Showers And Thunderstorms
|
70°F |
1 mph
W
|
|
Saturday
Aug 8
|
Partly Sunny then Chance Showers And Thunderstorms
|
87°F |
2 mph
E
|
|
Saturday Night
Aug 8
|
Chance Showers And Thunderstorms
|
70°F |
1 mph
E
|
|
Sunday
Aug 9
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
86°F |
2 mph
SSE
|
Nearby Forecasts
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Coverage
Forecast coverage currently spans 0 of 0 mapped cities in Union County.
