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Union, South Carolina Weather Forecast
Union, South Carolina Weather
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Weather Forecast for Union, South Carolina : Union County
Issued: 12:18 pm EST Dec 16, 2025 Latitude: 34.7154123 Longitude: -81.623711 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on This Afternoon Mostly Clear on Tonight Partly Sunny on Wednesday 60% chance of rain on Thursday 30% chance of rain on Friday Sunny on Saturday Sunny on Sunday Mostly Sunny on Monday
High: 53°F Low: 30°F High: 56°F High: 58°F High: 55°F High: 55°F High: 63°F High: 57°F
Low: 38°F Low: 45°F Low: 29°F Low: 36°F Low: 37°F  
Sunny Mostly Clear Partly Sunny Rain Rain Sunny Sunny Mostly Sunny
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Current Conditions at
GREENVILLE SPARTANBURG - (KGSP)
55°
Clear
as of 12:53 PM EST
Rel. Humidity: 15%
Dew Point: 9°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
8 MPH
220° Southwest
Cloud Level(s): Clear
Current Conditions at
ROCK HILL - (KUZA)
50°
Clear
as of 12:54 PM EST
Rel. Humidity: 21%
Dew Point: 12°F
Visibility: 10 Miles
Pressure: 30.20 in.
Flight Rule: VFR
Wind Data
6 MPH
Cloud Level(s): Clear
Current Conditions at
SHELBY MUNI ARPT - (KEHO)
46°
Clear
as of 12:55 PM EST
Rel. Humidity: 26%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.19 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
GASTONIA - (KAKH)
48°
Clear
as of 12:54 PM EST
Rel. Humidity: 24%
Dew Point: 14°F
Visibility: 10 Miles
Pressure: 30.18 in.
Flight Rule: VFR
Wind Data
5 MPH
Cloud Level(s): Clear
Sunny on This Afternoon This Afternoon... Sunny, with a high near 53. Light south southwest wind.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 30. Calm wind becoming south southwest around 5 mph after midnight.
Partly Sunny on Wednesday Wednesday... Partly sunny, with a high near 56. Southwest wind 3 to 7 mph.
Mostly Cloudy on Wednesday Night Wednesday Night... Mostly cloudy, with a low around 38. Calm wind.
60% chance of rain Thursday Thursday... Rain likely, mainly after 2pm. Cloudy, with a high near 58. Calm wind. Chance of precipitation is 60%.
90% chance of rain Thursday Night Thursday Night... Rain, mainly before 5am. Low around 45. Chance of precipitation is 90%.
30% chance of rain Friday Friday... A 30 percent chance of rain before 7am. Sunny, with a high near 55.
Clear on Friday Night Friday Night... Clear, with a low around 29.
Sunny on Saturday Saturday... Sunny, with a high near 55.
Mostly Clear on Saturday Night Saturday Night... Mostly clear, with a low around 36.
Sunny on Sunday Sunday... Sunny, with a high near 63.
Mostly Clear on Sunday Night Sunday Night... Mostly clear, with a low around 37.
Mostly Sunny on Monday Monday... Mostly sunny, with a high near 57.
Current Radar Image


Sun Almanac for Union, South Carolina
Sunrise: 07:27 AM
Sunset: 5:17 PM
Civil Sunrise:06:59 AM
Civil Sunset: 5:45 PM
Nautical Sunrise: 06:28 AM
Nautical Sunset: 6:17 PM
Astro Sunrise: 05:57 AM
Astro Sunset: 6:48 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.