Union, SC Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Union, SC in one place.
Sunny, with a high near 83.
Local Weather Overview
This forecast page for Union, SC is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 20, 2026 3:28 AM EDT.
The active forecast window currently covers Apr 22 to Apr 26, 2026 for Union, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 22 to Apr 26, 2026
- Latest sync
- Apr 20, 2026 3:28 AM EDT
- Forecast office
- GSP
- Source
- NOAA / NWS
Daily Outlook
This Week in Union
Thursday looks like the warmest upcoming period in Union at 86 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 52 degrees F.
The strongest winds are forecast for Wednesday at about 2 to 8 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 20, 2026 3:28 AM EDT
- Coverage
- 5 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
Clear, with a low around 52.
Sunny, with a high near 86.
Mostly clear, with a low around 56.
Sunny, with a high near 86.
Partly cloudy, with a low around 60.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
A chance of rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 22
|
Sunny
|
83°F |
2 to 8 mph
SW
|
|
Wednesday Night
Apr 22
|
Clear
|
52°F |
1 to 7 mph
WSW
|
|
Thursday
Apr 23
|
Sunny
|
86°F |
3 mph
WSW
|
|
Thursday Night
Apr 23
|
Mostly Clear
|
56°F |
3 mph
SW
|
|
Friday
Apr 24
|
Sunny
|
86°F |
1 to 7 mph
SW
|
|
Friday Night
Apr 24
|
Partly Cloudy
|
60°F |
5 mph
SW
|
|
Saturday
Apr 25
|
Chance Showers And Thunderstorms
|
84°F |
2 to 8 mph
SW
|
|
Saturday Night
Apr 25
|
Chance Showers And Thunderstorms
|
59°F |
2 to 6 mph
WSW
|
|
Sunday
Apr 26
|
Chance Rain Showers
|
82°F |
2 to 6 mph
WSW
|
Nearby Forecasts
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