Union, SC Weather Forecast

Local 7-day forecast

81°

Showers And Thunderstorms Likely

Track current conditions, temperature changes, wind, and the full daily outlook for Union, SC in one place.

Tuesday, June 9, 2026

Wind: 0 to 3 mph S

Tuesday

Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 81. South wind 0 to 3 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Local 7-day forecast

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: Jun 8, 2026 9:16 AM EDT.

The active forecast window currently covers Jun 9 to Jun 14, 2026 for Union, SC.

Page Snapshot

Page focus: city weather
Forecast window: Jun 9 to Jun 14, 2026
Latest sync: Jun 8, 2026 9:16 AM EDT
Forecast office: GSP
Source: NOAA / NWS

Next High

81°F

Tuesday

Next Low

67°F

Tuesday Night

Rain Outlook

Periods mentioning precipitation

Windiest

1 to 6 mph

Wednesday

Daily Outlook

Today

Jun 9

Showers And Thunderstorms Likely

81 °F

/ 67°F

Wind 0 to 3 mph

Wed

Jun 10

Partly Sunny then Slight Chance Showers And Thunderstorms

86 °F

/ 70°F

Wind 1 to 6 mph

Thu

Jun 11

Mostly Sunny then Slight Chance Showers And Thunderstorms

91 °F

/ 72°F

Wind 5 mph

Fri

Jun 12

Mostly Sunny then Slight Chance Showers And Thunderstorms

92 °F

/ 71°F

Wind 3 mph

Sat

Jun 13

Mostly Sunny then Chance Showers And Thunderstorms

92 °F

/ 70°F

Wind 1 mph

Sun

Jun 14

Mostly Sunny then Chance Showers And Thunderstorms

90 °F

/ 70°F

Wind 0 to 5 mph

This Week in Union

Friday looks like the warmest upcoming period in Union at 92 degrees F.

Tuesday Night is the coolest period ahead with temperatures near 67 degrees F.

The strongest winds are forecast for Wednesday at about 1 to 6 mph SW.

Precipitation is mentioned in 12 upcoming forecast periods.

Forecast Details

Last updated: Jun 8, 2026 9:16 AM EDT
Coverage: 6 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 source

Extended Forecast

Tuesday Night

Jun 9

67°F

Mostly Cloudy

1 mph WSW

Mostly cloudy, with a low around 67. West southwest wind around 1 mph. New rainfall amounts between a tenth and quarter of an inch possible.

Wednesday

Jun 10

86°F

Partly Sunny then Slight Chance Showers And Thunderstorms

1 to 6 mph SW

A slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. Southwest wind 1 to 6 mph. Chance of precipitation is 20%.

Wednesday Night

Jun 10

70°F

Slight Chance Showers And Thunderstorms then Partly Cloudy

0 to 3 mph WSW

A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

Thursday

Jun 11

91°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

5 mph SW

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.

Thursday Night

Jun 11

72°F

Slight Chance Showers And Thunderstorms then Partly Cloudy

0 to 3 mph WSW

A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.

Friday

Jun 12

92°F

Mostly Sunny then Slight Chance Showers And Thunderstorms

3 mph WSW

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.

Friday Night

Jun 12

71°F

Slight Chance Showers And Thunderstorms

2 mph NW

A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71.

Saturday

Jun 13

92°F

Mostly Sunny then Chance Showers And Thunderstorms

1 mph NW

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.

Saturday Night

Jun 13

70°F

Chance Showers And Thunderstorms

1 mph WNW

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Sunday

Jun 14

90°F

Mostly Sunny then Chance Showers And Thunderstorms

0 to 5 mph WSW

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.

Sunday Night

Jun 14

70°F

Chance Showers And Thunderstorms

0 to 3 mph WSW

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Tuesday Jun 9	Showers And Thunderstorms Likely	81°F	0 to 3 mph S	Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm. Some of the...
Tuesday Night Jun 9	Mostly Cloudy	67°F	1 mph WSW	Mostly cloudy, with a low around 67. West southwest wind around 1 mph. New rainfall amounts between a tenth and quarter...
Wednesday Jun 10	Partly Sunny then Slight Chance Showers And Thunderstorms	86°F	1 to 6 mph SW	A slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 86. Southwest wind 1 to 6 mph. Ch...
Wednesday Night Jun 10	Slight Chance Showers And Thunderstorms then Partly Cloudy	70°F	0 to 3 mph WSW	A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is...
Thursday Jun 11	Mostly Sunny then Slight Chance Showers And Thunderstorms	91°F	5 mph SW	A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Thursday Night Jun 11	Slight Chance Showers And Thunderstorms then Partly Cloudy	72°F	0 to 3 mph WSW	A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.
Friday Jun 12	Mostly Sunny then Slight Chance Showers And Thunderstorms	92°F	3 mph WSW	A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Friday Night Jun 12	Slight Chance Showers And Thunderstorms	71°F	2 mph NW	A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71.
Saturday Jun 13	Mostly Sunny then Chance Showers And Thunderstorms	92°F	1 mph NW	A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Saturday Night Jun 13	Chance Showers And Thunderstorms	70°F	1 mph WNW	A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Sunday Jun 14	Mostly Sunny then Chance Showers And Thunderstorms	90°F	0 to 5 mph WSW	A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 40%.
Sunday Night Jun 14	Chance Showers And Thunderstorms	70°F	0 to 3 mph WSW	A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 70.

Nearby Forecasts

Explore weather pages for nearby cities and major places around Union.

Nearby forecast pages are not available for this location yet.

Region Links

Union County weather

County forecast page

South Carolina weather

Statewide weather overview

United States weather

National weather entry point

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.