Live Weather & Forecast
Weather in Union
South Carolina, United States · Real-time conditions & 3-day outlook
24°C
Feels like 24°C
76°F / Feels 75°F
Clear
Union, South Carolina
🌙 Nighttime
Updated: 2026-04-12 20:45
Humidity
29%
Wind
9.7 km/h S
Wind Gust
20.4 km/h
Pressure
1025 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
3.8°C
Wind Degree
172°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
165.9 μg/m³
NO₂
4.2 μg/m³
O₃
105 μg/m³
SO₂
3.3 μg/m³
PM 2.5
10.3 μg/m³
PM 10
10.5 μg/m³
Today's Hourly Forecast
24-hour breakdown for Union, South Carolina
12 AM
18°
Clear
1 AM
17°
Clear
2 AM
16°
Clear
3 AM
15°
Clear
4 AM
14°
Clear
5 AM
13°
Clear
6 AM
13°
Clear
7 AM
13°
Sunny
8 AM
15°
Sunny
9 AM
18°
Sunny
10 AM
21°
Sunny
11 AM
25°
Sunny
12 PM
28°
Sunny
1 PM
29°
Sunny
2 PM
30°
Sunny
3 PM
30°
Sunny
4 PM
30°
Sunny
5 PM
30°
Sunny
6 PM
29°
Sunny
7 PM
26°
Sunny
8 PM
24°
Clear
9 PM
23°
Clear
10 PM
21°
Clear
11 PM
20°
Clear
3-Day Forecast
Daily overview for Union, South Carolina
Today
Sunny
31°
/
12°
🌧️ 0% chance of rain
💧 Avg. humidity: 40%
💨 Max wind: 15.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.2
🌅 Sunrise: 06:59 AM
🌇 Sunset: 07:57 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Cloudy
23°
/
15°
🌧️ 0% chance of rain
💧 Avg. humidity: 73%
💨 Max wind: 15.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.1
🌅 Sunrise: 06:57 AM
🌇 Sunset: 07:57 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Sunny
29°
/
16°
🌧️ 0% chance of rain
💧 Avg. humidity: 63%
💨 Max wind: 15.1 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.2
🌅 Sunrise: 06:56 AM
🌇 Sunset: 07:58 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Union
Plan your trip to Union, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Union?
Current conditions in Union: Clear, temperature 24°C, humidity 29%.
What is the best time to visit Union?
The best time to visit Union is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Union?
Union is located at approximately 34.7° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Union?
The wettest period in Union is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Union?
For visits to Union during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Union in?
Union is located in United States, in the state of South Carolina.
What are the public holidays in Union in 2026?
View the 2026 public holidays for Union on our Holidays page.
What are the GPS coordinates used for the weather forecast in Union?
The weather forecast for Union uses coordinates 34.7152, -81.6237.