New York, NY 82° Los Angeles, CA 92° 🌤️ Chicago, IL 🌤️ Houston, TX Miami, FL 87° Phoenix, AZ 118° 🌤️ Seattle, WA 🌤️ Denver, CO Toronto, ON 82° 🌤️ Vancouver, BC
WeatherLive › South Carolina › Union

Union, SC Weather (29379)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherUnion · 7:26 PM EDT
99° | 76°
94°F
Feels like 102°
Sunny
WindNW 15 mph · Gusts 21 mph
Precip4% · –
Humidity50% · Dew point 72°
UV index9 Very high
Air Quality45 Good
Pressure29.88 inHg
Visibility6 mi
Sunrise / Sunset6:48 AM · 8:12 PM · 13h 24m

Weather map — Union

Full radar →
Now
94°
2%
15 mph
20:00
89°
2%
14 mph
21:00
87°
2%
10 mph
22:00
85°
2%
3 mph
23:00
83°
2%
4 mph
00:00
81°
4%
1 mph
01:00
80°
4%
2 mph
02:00
79°
16%
1 mph
03:00
79°
5%
2 mph
04:00
78°
5%
3 mph
05:00
78°
6%
3 mph
06:00
77°
7%
3 mph
07:00
76°
7%
3 mph
08:00
78°
8%
3 mph
09:00
82°
4%
4 mph
10:00
86°
2%
4 mph
11:00
90°
1%
4 mph
12:00
93°
1%
4 mph
13:00
95°
1%
4 mph
14:00
98°
1%
3 mph
15:00
100°
0%
2 mph
16:00
101°
1%
2 mph
17:00
100°
2%
3 mph
18:00
98°
9%
5 mph

Today · Mon 8/17

High 99°
4% / –

Sunny. Winds NW at 15 mph.

Tonight · Mon 8/17

Low 76°
2% / –

Sunny. Winds N at 10 mph.

Tomorrow · Tue 8/18

101° | 76°
2% / –

Sunny. Winds N at 7 mph.

7-day trend

Union · temperature + precipitation

10-day forecast

Updated 7:26 PM

Details & indices

Wind
15 mph NW
Gusts 21 mph
Humidity
50%
Dew point 72°
Pressure
29.88 inHg
Falling
UV index
9 — Very high
High today
Air Quality
Good
AQI 45 · US EPA
Allergy
Very high
Grass
Visibility
6 mi
Clear view
Allergy — Union

🌿 Conditions right now

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

Sun & moon

Sunrise6:48 AM
Sunset8:12 PM
Length of day13h 24m
Moonrise11:57 AM
Moonset10:46 PM
Moon phase🌒 Waxing Crescent · 29%
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
100°
Data sources · Monday, August 17
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: 7:26 PM
Weather in Union
Union's outlook: warmest day near 104° (Thursday), coldest night about 68° (Sunday). Models drop roughly 1.3 in of precipitation across the stretch — watch Saturday (88%). Expect a blustery spell — gusts near 30 mph on Monday. No watches or warnings are active for the area right now. Right now Union is running about 14° 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: 7:26 PM