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Weather data for South Union is updated regularly with the latest available observations and forecasts.

Now · 12:21 PM

South Union Weather & Hourly Forecast

United States · South Carolina · 29693

79°F

Sunny

Feels like: 79°F

💧 Humidity 59% 🌡 Pressure 30.30 inHg 💨 Wind 7 mph 👁 Visibility 21.7 mi ☁ Clouds 0% ☀️ UV index 6.9 · High 🌅 Sunrise — 🌇 Sunset —

Hourly Forecast for South Union

Today

1:00 PM

Sunny

80° 💧 None 💨 7 mph H 56%30.27 inHg

4:00 PM

Mostly cloudy

82° 💧 None 💨 6 mph H 51%30.21 inHg

7:00 PM

Partly cloudy

79° 💧 None 💨 4 mph H 64%30.18 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 6 mph H 67%30.24 inHg

Tomorrow

1:00 AM

Overcast night

70° 💧 None 💨 4 mph H 77%30.24 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 4 mph H 79%30.24 inHg

7:00 AM

Clear night

67° 💧 None 💨 4 mph H 85%30.27 inHg

10:00 AM

Mostly sunny

75° 💧 None 💨 3 mph H 73%30.30 inHg

1:00 PM

Sunny

81° 💧 None 💨 3 mph H 67%30.27 inHg

4:00 PM

Mostly sunny

84° 💧 None 💨 2 mph H 54%30.15 inHg

7:00 PM

Partly cloudy

82° 💧 None 💨 2 mph H 61%30.12 inHg

10:00 PM

Clear night

75° 💧 None 💨 2 mph H 71%30.12 inHg

Thursday

1:00 AM

Partly cloudy night

73° 💧 None 💨 2 mph H 84%30.15 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 2 mph H 89%30.12 inHg

7:00 AM

Mostly cloudy night

70° 💧 None 💨 2 mph H 86%30.12 inHg

10:00 AM

Mostly cloudy

78° 💧 None 💨 4 mph H 79%30.12 inHg

Today

1:00 PM

Sunny

80° 💧 None 💨 7 mph H 56%30.27 inHg

2:00 PM

Sunny

81° 💧 None 💨 6 mph H 54%30.24 inHg

3:00 PM

Mostly sunny

82° 💧 None 💨 6 mph H 52%30.21 inHg

4:00 PM

Mostly cloudy

82° 💧 None 💨 6 mph H 51%30.21 inHg

5:00 PM

Partly cloudy

82° 💧 None 💨 6 mph H 51%30.18 inHg

6:00 PM

Partly cloudy

82° 💧 None 💨 6 mph H 53%30.18 inHg

7:00 PM

Partly cloudy

79° 💧 None 💨 4 mph H 64%30.18 inHg

8:00 PM

Mostly cloudy night

75° 💧 None 💨 4 mph H 69%30.18 inHg

9:00 PM

Mostly cloudy night

74° 💧 None 💨 6 mph H 68%30.21 inHg

10:00 PM

Mostly cloudy night

73° 💧 None 💨 6 mph H 67%30.24 inHg

11:00 PM

Mostly cloudy night

72° 💧 None 💨 5 mph H 70%30.24 inHg

Tomorrow

12:00 AM

Overcast night

71° 💧 None 💨 4 mph H 73%30.24 inHg

1:00 AM

Overcast night

70° 💧 None 💨 4 mph H 77%30.24 inHg

2:00 AM

Overcast night

70° 💧 None 💨 4 mph H 78%30.24 inHg

3:00 AM

Mostly cloudy night

69° 💧 None 💨 4 mph H 79%30.24 inHg

4:00 AM

Mostly cloudy night

68° 💧 None 💨 4 mph H 79%30.24 inHg

5:00 AM

Partly cloudy night

68° 💧 None 💨 4 mph H 80%30.24 inHg

6:00 AM

Mostly cloudy night

67° 💧 None 💨 3 mph H 83%30.24 inHg

7:00 AM

Clear night

67° 💧 None 💨 4 mph H 85%30.27 inHg

8:00 AM

Sunny

68° 💧 None 💨 5 mph H 84%30.27 inHg

9:00 AM

Sunny

72° 💧 None 💨 3 mph H 80%30.30 inHg

10:00 AM

Mostly sunny

75° 💧 None 💨 3 mph H 73%30.30 inHg

11:00 AM

Sunny

78° 💧 None 💨 2 mph H 70%30.30 inHg

12:00 PM

Sunny

80° 💧 None 💨 2 mph H 69%30.30 inHg

1:00 PM

Sunny

81° 💧 None 💨 3 mph H 67%30.27 inHg

2:00 PM

Sunny

82° 💧 None 💨 3 mph H 64%30.24 inHg

3:00 PM

Partly cloudy

84° 💧 None 💨 2 mph H 59%30.21 inHg

4:00 PM

Mostly sunny

84° 💧 None 💨 2 mph H 54%30.15 inHg

5:00 PM

Mostly sunny

84° 💧 None 💨 2 mph H 51%30.15 inHg

6:00 PM

Partly cloudy

84° 💧 None 💨 3 mph H 51%30.12 inHg

7:00 PM

Partly cloudy

82° 💧 None 💨 2 mph H 61%30.12 inHg

8:00 PM

Partly cloudy night

78° 💧 None 💨 1 mph H 68%30.12 inHg

9:00 PM

Mostly clear night

76° 💧 None 💨 1 mph H 71%30.12 inHg

10:00 PM

Clear night

75° 💧 None 💨 2 mph H 71%30.12 inHg

11:00 PM

Mostly clear night

73° 💧 None 💨 2 mph H 78%30.15 inHg

Thursday

12:00 AM

Partly cloudy night

73° 💧 None 💨 2 mph H 83%30.15 inHg

1:00 AM

Partly cloudy night

73° 💧 None 💨 2 mph H 84%30.15 inHg

2:00 AM

Mostly clear night

73° 💧 None 💨 2 mph H 83%30.15 inHg

3:00 AM

Partly cloudy night

72° 💧 None 💨 2 mph H 87%30.12 inHg

4:00 AM

Mostly cloudy night

71° 💧 None 💨 2 mph H 89%30.12 inHg

5:00 AM

Partly cloudy night

70° 💧 None 💨 2 mph H 90%30.12 inHg

6:00 AM

Partly cloudy night

70° 💧 None 💨 1 mph H 88%30.12 inHg

7:00 AM

Mostly cloudy night

70° 💧 None 💨 2 mph H 86%30.12 inHg

8:00 AM

Partly cloudy

72° 💧 None 💨 3 mph H 83%30.12 inHg

9:00 AM

Partly cloudy

75° 💧 None 💨 3 mph H 80%30.12 inHg

10:00 AM

Mostly cloudy

78° 💧 None 💨 4 mph H 79%30.12 inHg

11:00 AM

Partly cloudy

80° 💧 None 💨 4 mph H 73%30.12 inHg

12:00 PM

Mostly sunny

82° 💧 None 💨 4 mph H 69%30.09 inHg

1:00 PM

Sunny

84° 💧 None 💨 5 mph H 65%30.06 inHg

2:00 PM

Sunny

85° 💧 None 💨 5 mph H 61%30.03 inHg

3:00 PM

Mostly sunny

87° 💧 None 💨 5 mph H 56%30.00 inHg

4:00 PM

Sunny

87° 💧 None 💨 5 mph H 52%29.94 inHg

5:00 PM

Sunny

87° 💧 None 💨 6 mph H 51%29.94 inHg

6:00 PM

Sunny

87° 💧 None 💨 6 mph H 51%29.91 inHg

7:00 PM

Sunny

84° 💧 None 💨 3 mph H 63%29.91 inHg

8:00 PM

Mostly cloudy night

80° 💧 None 💨 4 mph H 72%29.91 inHg

Friday

5:00 AM

Mostly clear night

72° 💧 None 💨 4 mph H 93%29.97 inHg

8:00 AM

Partly cloudy

73° 💧 None 💨 5 mph H 91%29.97 inHg

11:00 AM

Sunny

83° 💧 None 💨 3 mph H 66%29.97 inHg

2:00 PM

Sunny

90° 💧 None 💨 1 mph H 45%29.94 inHg

5:00 PM

Mostly sunny

91° 💧 None 💨 1 mph H 42%29.85 inHg

8:00 PM

Partly cloudy night

83° 💧 None 💨 3 mph H 68%29.91 inHg

11:00 PM

Clear night

80° 💧 None 💨 6 mph H 74%29.94 inHg

Saturday

2:00 AM

Mostly clear night

76° 💧 None 💨 4 mph H 91%29.94 inHg

5:00 AM

Mostly cloudy night

75° 💧 None 💨 0 mph H 91%29.97 inHg

8:00 AM

Mostly cloudy

75° 💧 None 💨 2 mph H 93%30.03 inHg

11:00 AM

Light rain

81° 💧 None 💨 4 mph H 74%30.03 inHg

2:00 PM

Light rain

82° 💧 None 💨 2 mph H 77%30.00 inHg

5:00 PM

Light rain

77° 💧 None 💨 1 mph H 92%30.00 inHg

8:00 PM

Light rain

75° 💧 None 💨 1 mph H 93%30.03 inHg

11:00 PM

Light rain

73° 💧 None 💨 1 mph H 97%30.03 inHg

Sunday

2:00 AM

Light rain

72° 💧 None 💨 2 mph H 98%30.06 inHg

5:00 AM

Moderate rain

71° 💧 None 💨 4 mph H 99%30.06 inHg

8:00 AM

Mostly sunny

71° 💧 None 💨 4 mph H 97%30.06 inHg

11:00 AM

Overcast

78° 💧 None 💨 1 mph H 83%30.09 inHg

2:00 PM

Sunny

83° 💧 None 💨 2 mph H 68%30.03 inHg

5:00 PM

Sunny

85° 💧 None 💨 1 mph H 65%29.97 inHg

8:00 PM

Mostly clear night

77° 💧 None 💨 3 mph H 92%30.03 inHg

11:00 PM

Clear night

76° 💧 None 💨 1 mph H 92%30.06 inHg

Monday

2:00 AM

Mostly clear night

74° 💧 None 💨 1 mph H 95%30.09 inHg

8:00 AM

Sunny

75° 💧 None 💨 2 mph H 99%30.06 inHg

2:00 PM

Mostly sunny

74° 💧 None 💨 3 mph H 97%30.09 inHg

8:00 PM

Clear night

87° 💧 None 💨 3 mph H 62%30.06 inHg

Tuesday

2:00 AM

Clear night

82° 💧 None 💨 5 mph H 78%30.00 inHg

8:00 AM

Partly cloudy

78° 💧 None 💨 1 mph H 89%30.06 inHg

2:00 PM

Mostly cloudy

77° 💧 None 💨 2 mph H 94%30.15 inHg

8:00 PM

Mostly cloudy night

87° 💧 None 💨 7 mph H 63%30.15 inHg

Wednesday

2:00 AM

Clear night

82° 💧 None 💨 4 mph H 73%30.12 inHg

8:00 AM

Sunny

76° 💧 None 💨 4 mph H 88%30.21 inHg

2:00 PM

Sunny

75° 💧 None 💨 3 mph H 95%30.24 inHg

8:00 PM

Clear night

87° 💧 None 💨 8 mph H 59%30.21 inHg

Thursday

2:00 AM

Clear night

82° 💧 None 💨 5 mph H 69%30.15 inHg

8:00 AM

Sunny

75° 💧 None 💨 1 mph H 92%30.21 inHg

2:00 PM

Mostly cloudy

74° 💧 None 💨 1 mph H 98%30.21 inHg

8:00 PM

Clear night

88° 💧 None 💨 2 mph H 58%30.15 inHg

Friday

2:00 AM

Clear night

84° 💧 None 💨 1 mph H 70%30.03 inHg

8:00 AM

Sunny

77° 💧 None 💨 6 mph H 75%30.03 inHg

2:00 PM

Mostly sunny

76° 💧 None 💨 6 mph H 82%29.97 inHg

8:00 PM

Light rain

82° 💧 None 💨 9 mph H 71%29.97 inHg

Saturday

2:00 AM

Mostly clear night

75° 💧 None 💨 9 mph H 61%30.03 inHg

8:00 AM

Sunny

68° 💧 None 💨 12 mph H 54%30.12 inHg

2:00 PM

Sunny

62° 💧 None 💨 13 mph H 64%30.21 inHg

8:00 PM

Clear night

72° 💧 None 💨 11 mph H 38%30.18 inHg

Sunday

2:00 AM

Clear night

67° 💧 None 💨 5 mph H 47%30.09 inHg

8:00 AM

Sunny

61° 💧 None 💨 8 mph H 51%30.18 inHg

2:00 PM

Sunny

58° 💧 None 💨 9 mph H 61%30.21 inHg

8:00 PM

Clear night

73° 💧 None 💨 6 mph H 37%30.18 inHg

Monday

2:00 AM

Clear night

69° 💧 None 💨 4 mph H 57%30.12 inHg

8:00 AM

Sunny

63° 💧 None 💨 3 mph H 77%30.18 inHg

2:00 PM

Sunny

62° 💧 None 💨 3 mph H 76%30.21 inHg

8:00 PM

Clear night

79° 💧 None 💨 2 mph H 45%30.18 inHg

Tuesday

2:00 AM

Clear night

75° 💧 None 💨 3 mph H 58%30.09 inHg

8:00 AM

Sunny

68° 💧 None 💨 1 mph H 82%30.12 inHg

2:00 PM

Sunny

67° 💧 None 💨 2 mph H 96%30.12 inHg

8:00 PM

Partly cloudy night

86° 💧 None 💨 4 mph H 41%30.03 inHg

Wednesday

2:00 AM

Mostly clear night

80° 💧 None 💨 3 mph H 56%29.97 inHg

In South Union and, more broadly, across the state of South Carolina: The rest of the day will be characterized by mostly cloudy skies, with temperatures warming into the mid to upper 80s. Winds will remain light from the east, generally around 9 mph, with occasional gusts reaching up to 19 mph. No precipitation is expected, so outdoor plans should be comfortable. Temperatures will stay mild to warm, making for a pleasant afternoon. Keep an eye on the wind, especially during gusts, but overall, conditions will be fairly calm. The evening may see continued cloud cover, but clear skies are not anticipated overnight. Overall, it looks like a mild, mostly cloudy day with gentle breezes.

15-Day Weather Outlook for South Union

TomorrowTomorrow

Mostly cloudy 84°/67° 💧 None 💨 6 mph

Thursday, Sep 10Thu Sep 10

Partly cloudy 87°/70° 💧 None 💨 6 mph

Friday, Sep 11Fri Sep 11

Mostly sunny 91°/72° 💧 0.001 in 💨 5 mph

Saturday, Sep 12Sat Sep 12

Light rain 83°/75° 💧 0.263 in 💨 6 mph

Sunday, Sep 13Sun Sep 13

Moderate rain 85°/71° 💧 0.400 in 💨 4 mph

Monday, Sep 14Mon Sep 14

Mostly sunny 77°/74° 💧 0.035 in 💨 3 mph

Tuesday, Sep 15Tue Sep 15

Mostly cloudy 87°/77° 💧 0.018 in 💨 5 mph

Wednesday, Sep 16Wed Sep 16

Mostly cloudy 87°/75° 💧 0.010 in 💨 7 mph

Thursday, Sep 17Thu Sep 17

Mostly cloudy 87°/74° 💧 0.002 in 💨 8 mph

Friday, Sep 18Fri Sep 18

Mostly sunny 88°/76° 💧 0.001 in 💨 6 mph

Saturday, Sep 19Sat Sep 19

Light rain 82°/62° 💧 0.116 in 💨 13 mph

Sunday, Sep 20Sun Sep 20

Sunny 72°/58° 💧 None 💨 11 mph

Monday, Sep 21Mon Sep 21

Sunny 73°/62° 💧 None 💨 6 mph

Tuesday, Sep 22Tue Sep 22

Sunny 79°/67° 💧 None 💨 3 mph

Wednesday, Sep 23Wed Sep 23

Partly cloudy 86°/80° 💧 None 💨 4 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in South Union

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for South Union

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 1:00 PM

PM2.5 Fine particles Good 2,6µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Good 4,5µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 80,7µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,7µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in South Union

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 8,2Very high 🙂Fair

Tomorrow UV 8,6Very high 🙂Fair

Thursday UV 8,1Very high 🙂Fair

Friday UV 8,1Very high 🙂Fair

Saturday UV 7,0High 😊Good

Sunday UV 6,0High —Unavailable

Monday UV 8,0Very high —Unavailable

Hourly UV index today

1:00 PMUV 8,2 2:00 PMUV 8,2 3:00 PMUV 7,0 4:00 PMUV 4,9 5:00 PMUV 2,7 6:00 PMUV 1,0 7:00 PMUV 0,2

Today's weather health advice Open today's recommendations.

Very high UV risk

Use SPF 50+ sunscreen, a hat and sunglasses. Seek shade and limit exposure around midday.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Stay hydrated

Drink water regularly, especially during physical activity or prolonged sun exposure.

Best in the morning or late in the day

For walking, running or cycling, prefer the early morning or late afternoon.

WIND OUTLOOK

Hourly Wind Forecast for South Union

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SOUTH UNION, SOUTH CAROLINA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 5:00 AM–6:00 AM.

73/100Best-hour score

BEST TIME TONIGHT 5:00 AM–6:00 AM Astronomical darkness: 9:15 PM–5:45 AM

☁ Cloud cover 38% Real hourly forecast for the best viewing hour.

☾ Moonlight 7% Waning Crescent · Moon below the horizon at the best viewing hour.

☄ Meteor activity September ε-Perseids Reference ZHR 8 · Radiant 82° high at the best hour.

✦ Estimated visible meteors 1–4/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min70%

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 5–SEP 21

September ε-PerseidsStart SEP 5 · Peak SEP 9 · End SEP 21 · ZHR 8 · 6% Moon at peak

ACTIVE NOW

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

UPCOMING

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for South Union were last refreshed today at 12:21 PM. The current forecast period extends through 10/09/2026 at 10:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.