New York, NY 17° Los Angeles, CA 22° Chicago, IL 16° Houston, TX 27° 🌤️ Miami, FL 🌤️ Phoenix, AZ Seattle, WA 17° 🌤️ Denver, CO 🌤️ Toronto, ON Vancouver, BC 18°
WeatherLive › South Carolina › Union

Union, SC Weather (29379)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherUnion · 4:02 AM EDT
34° | 17°
18°C
Feels like 18°
Sunny
WindN 5 mph · Gusts 18 mph
Precip5% · –
Humidity80% · Dew point 15°
UV index9 Very high
Air Quality26 Good
Pressure30.00 inHg
Visibility6 mi
Sunrise / Sunset6:54 AM · 8:02 PM · 13h 8m

Weather map — Union

Full radar →
Now
18°
9%
5 mph
05:00
18°
23%
5 mph
06:00
17°
22%
6 mph
07:00
17°
21%
6 mph
08:00
19°
18%
7 mph
09:00
21°
13%
8 mph
10:00
23°
11%
7 mph
11:00
26°
11%
6 mph
12:00
28°
10%
5 mph
13:00
29°
10%
4 mph
14:00
30°
9%
2 mph
15:00
33°
1%
0 mph
16:00
34°
1%
1 mph
17:00
34°
1%
2 mph
18:00
33°
1%
4 mph
19:00
32°
1%
4 mph
20:00
27°
2%
4 mph
21:00
26°
2%
5 mph
22:00
25°
3%
6 mph
23:00
25°
12%
6 mph
00:00
24°
16%
4 mph
01:00
24°
20%
5 mph
02:00
23°
10%
4 mph
03:00
23°
12%
2 mph

Today · Tue 8/25

High 34°
5% / –

Sunny. Winds NE at 8 mph.

Overnight · Tue 8/25

Low 17°
— / –

Sunny.

Tomorrow · Wed 8/26

34° | 21°
72% / 0.27 in

Showers. Winds SE at 10 mph.

7-day trend

Union · temperature + precipitation

10-day forecast

Updated 4:02 AM

Details & indices

Wind
5 mph N
Gusts 18 mph
Humidity
80%
Dew point 15°
Pressure
30.00 inHg
Rising
UV index
9 — Very high
High today
Air Quality
Good
AQI 26 · US EPA
Allergy
Very high
Grass
Visibility
6 mi
Clear view
Allergy — Union

🌿 Conditions right now

View all →
Birch
None
Grass
High
Oak
None
Alder
None
Hazel
None
Mugwort
High
Ragweed
High

Sun & moon

Sunrise6:54 AM
Sunset8:02 PM
Length of day13h 8m
Moonrise6:50 PM
Moonset4:12 AM
Moon phase🌔 Waxing Gibbous · 92%
Next full moonAug 28 Sturgeon Moon
Latitude34.7154°N
Longitude-81.6237°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
Columbia
Sunny
24°
Data sources · Tuesday, August 25
Where the Union forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 34.7154°N, -81.6237°.
NBM + global weather models
Updated: 4:02 AM
Weather in Union
Union's outlook: warmest day near 37° (Monday), coldest night about 17° (Tuesday). Models drop roughly 1.1 in of precipitation across the stretch — watch Thursday (85%). No watches or warnings are active for the area right now. Right now Union is running about 46° warmer than Knoxville. Longer view: humid-subtropical — long summers, mild winters, spring storm season.
Union, SC · Elev 643 ft · 34.72°N, 81.62°W · South Carolina · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 4:02 AM