Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
High-risk tornado outbreak unfolds across the Plains. Click for the forecast. Chevron right
Heat wave brings summerlike weather to the East. See how hot it will get this week. Chevron right

Union, SC

86°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Union

South Carolina

86°
No results found.
Try searching for a city, zip code or point of interest.
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Union, SC Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps
News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel
For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center
Today Hourly

10-Day

 Radar MinuteCast® Monthly Air Quality Health & Activities

Unlock extended 90-day forecasts

Activate Your Premium+ Subscription

Chevron right

May 18 - June 1

Mon 5/18

90° /63°
2%
Sunshine and very warm

RealFeel®97°

RealFeel Shade™87°

Max UV Index11.0 (Extreme)

WindSSW 5 mph

Tue 5/19

90° /63°
3%
Partly sunny and very warm

RealFeel®95°

RealFeel Shade™87°

Max UV Index11.0 (Extreme)

WindSSW 6 mph

Wed 5/20

90° /66°
10%
Partly sunny and very warm

RealFeel®98°

RealFeel Shade™88°

Max UV Index11.0 (Extreme)

WindSW 6 mph

Thu 5/21

89° /64°
68%
Remaining warm with some sun, then turning cloudy; a couple of afternoon showers and a thunderstorm

RealFeel®100°

RealFeel Shade™88°

Max UV Index11.0 (Extreme)

WindWNW 4 mph

Hours of Precipitation2

Hours of Rain2

Fri 5/22

81° /61°
55%
Considerable cloudiness with a thunderstorm in spots; not as warm but humid

RealFeel®85°

RealFeel Shade™83°

Max UV Index3.0 (Moderate)

WindNE 7 mph

Hours of Precipitation1

Hours of Rain1

Sat 5/23

81° /63°
25%
Mostly cloudy and humid

RealFeel®88°

RealFeel Shade™85°

Max UV Index4.0 (Moderate)

WindSSE 2 mph

Sun 5/24

83° /64°
30%
Cloudy and humid with a thunderstorm possible

RealFeel®86°

RealFeel Shade™85°

Max UV Index3.0 (Moderate)

WindSW 5 mph

Mon 5/25

81° /65°
30%
Partly sunny and humid with a thunderstorm in spots

RealFeel®97°

RealFeel Shade™93°

Max UV Index11.0 (Extreme)

WindS 4 mph

Tue 5/26

79° /64°
61%
Mostly cloudy and humid with a couple of thunderstorms, especially late in the day

RealFeel®88°

RealFeel Shade™87°

Max UV Index4.0 (Moderate)

WindSW 7 mph

Hours of Precipitation2

Hours of Rain2

Wed 5/27

80° /64°
75%
Humid with clouds and sun; a couple of afternoon showers

RealFeel®95°

RealFeel Shade™88°

Max UV Index11.0 (Extreme)

WindSW 5 mph

Hours of Precipitation2

Hours of Rain2

Thu 5/28

80° /62°
75%
Humid with rain

RealFeel®86°

RealFeel Shade™86°

Max UV Index3.0 (Moderate)

WindSE 5 mph

Hours of Precipitation7

Hours of Rain7

Fri 5/29

81° /62°
61%
Humid with periods of rain

RealFeel®91°

RealFeel Shade™87°

Max UV Index4.0 (Moderate)

WindSSE 5 mph

Hours of Precipitation3.5

Hours of Rain3.5

Sat 5/30

82° /59°
55%
Considerable cloudiness with a bit of rain; humid

RealFeel®92°

RealFeel Shade™88°

Max UV Index5.0 (Moderate)

WindS 4 mph

Hours of Precipitation2

Hours of Rain2

Sun 5/31

81° /60°
25%
Humid with partial sunshine

RealFeel®94°

RealFeel Shade™93°

Max UV Index11.0 (Extreme)

WindNW 4 mph

Mon 6/1

86° /64°
25%
Humid with sun yielding to clouds

RealFeel®89°

RealFeel Shade™89°

Max UV Index8.0 (Very High)

WindN 5 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

High-risk tornado outbreak unfolds across Plains into Monday night

55 minutes ago

Weather Forecasts

Heat wave to complete spring weather whiplash, worsen drought in East

25 minutes ago

Severe Weather

Tornadoes charge through Plains, Midwest, ripping apart homes in Nebra...

33 minutes ago

Astronomy

Crescent moon is about to join Venus and Jupiter in evening sky

6 hours ago

Weather Forecasts

Memorial Day weekend: Downpours, storms from Texas to New England

34 minutes ago

 More Stories

Featured Stories

Astronomy

Watch an asteroid safely pass close to Earth on Monday

3 hours ago

Severe Weather

10 types of tornadoes that occur in the US

6 hours ago

Astronomy

SpaceX poised for first Starship flight test of 2026

2 days ago

Severe Weather

Does a green sky mean a tornado is coming?

6 hours ago

Climate

Turkmenistan's fiery 'Gates of Hell' crater is dimming

3 days ago
World North America United States South Carolina Union

Weather Near Union:

  • Asheville, NC
  • Greenville, SC
  • Spartanburg, SC
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...