What is the weather in Sumter right now?

Current weather in Sumter is thunderstorm with rain.

Where can I find the hourly weather forecast for Sumter?

This page shows hourly weather forecast for Sumter, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Sumter updated regularly?

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

Now · 8:43 PM

Sumter Weather & Hourly Forecast

United States · South Carolina · 29150

73°F

Thunderstorms

Feels like: 79°F

💧 Humidity 98% 🌡 Pressure 30.03 inHg 💨 Wind 4 mph 👁 Visibility 1.7 mi ☁ Clouds 90% ☀️ UV index 0.0 · Low 🌅 Sunrise 7:08 AM 🌇 Sunset 7:19 PM

Hourly Forecast for Sumter

Today

9:00 PM

Thunderstorms

73° 💧 0.401 in 💨 4 mph H 98%30.03 inHg

Tomorrow

12:00 AM

Light rain

71° 💧 0.029 in 💨 6 mph H 99%30.03 inHg

3:00 AM

Overcast night

71° 💧 0.003 in 💨 7 mph H 99%30.03 inHg

6:00 AM

Overcast night

71° 💧 0.006 in 💨 7 mph H 97%30.03 inHg

9:00 AM

Light rain

73° 💧 0.010 in 💨 8 mph H 94%30.09 inHg

12:00 PM

Overcast

78° 💧 0.008 in 💨 10 mph H 75%30.09 inHg

3:00 PM

Light rain

80° 💧 0.030 in 💨 11 mph H 69%30.06 inHg

6:00 PM

Mostly cloudy

77° 💧 0.002 in 💨 12 mph H 72%30.06 inHg

9:00 PM

Overcast night

73° 💧 None 💨 10 mph H 76%30.09 inHg

Thursday

12:00 AM

Overcast night

70° 💧 0.004 in 💨 9 mph H 81%30.12 inHg

3:00 AM

Light rain

66° 💧 0.018 in 💨 10 mph H 88%30.09 inHg

6:00 AM

Severe thunderstorms

63° 💧 0.661 in 💨 10 mph H 96%30.09 inHg

9:00 AM

Light rain

64° 💧 0.162 in 💨 10 mph H 97%30.15 inHg

12:00 PM

Light rain

69° 💧 0.007 in 💨 12 mph H 76%30.12 inHg

3:00 PM

Overcast

73° 💧 0.001 in 💨 12 mph H 67%30.09 inHg

6:00 PM

Overcast

73° 💧 None 💨 9 mph H 66%30.06 inHg

Today

9:00 PM

Thunderstorms

73° 💧 0.109 in 💨 4 mph H 98%30.03 inHg

10:00 PM

Thunderstorms

71° 💧 0.229 in 💨 7 mph H 99%30.06 inHg

11:00 PM

Light rain

72° 💧 0.062 in 💨 6 mph H 99%30.03 inHg

Tomorrow

12:00 AM

Light rain

71° 💧 0.024 in 💨 6 mph H 99%30.03 inHg

1:00 AM

Light rain

71° 💧 0.004 in 💨 7 mph H 99%30.03 inHg

2:00 AM

Partly cloudy night

71° 💧 0.000 in 💨 6 mph H 99%30.03 inHg

3:00 AM

Overcast night

71° 💧 0.001 in 💨 7 mph H 99%30.03 inHg

4:00 AM

Overcast night

71° 💧 0.001 in 💨 8 mph H 98%30.03 inHg

5:00 AM

Overcast night

71° 💧 0.001 in 💨 8 mph H 98%30.03 inHg

6:00 AM

Overcast night

71° 💧 0.002 in 💨 7 mph H 97%30.03 inHg

7:00 AM

Overcast night

71° 💧 0.002 in 💨 7 mph H 97%30.06 inHg

8:00 AM

Overcast

72° 💧 0.002 in 💨 7 mph H 96%30.09 inHg

9:00 AM

Light rain

73° 💧 0.004 in 💨 8 mph H 94%30.09 inHg

10:00 AM

Overcast

75° 💧 0.002 in 💨 10 mph H 86%30.09 inHg

11:00 AM

Overcast

77° 💧 0.003 in 💨 11 mph H 79%30.09 inHg

12:00 PM

Overcast

78° 💧 0.002 in 💨 10 mph H 75%30.09 inHg

1:00 PM

Overcast

78° 💧 0.002 in 💨 10 mph H 73%30.09 inHg

2:00 PM

Light rain

79° 💧 0.004 in 💨 10 mph H 71%30.06 inHg

3:00 PM

Light rain

80° 💧 0.010 in 💨 11 mph H 69%30.06 inHg

4:00 PM

Light rain

78° 💧 0.019 in 💨 12 mph H 73%30.03 inHg

5:00 PM

Partly cloudy

78° 💧 0.001 in 💨 11 mph H 72%30.06 inHg

6:00 PM

Mostly cloudy

77° 💧 0.001 in 💨 12 mph H 72%30.06 inHg

7:00 PM

Mostly cloudy

75° 💧 0.001 in 💨 11 mph H 75%30.09 inHg

8:00 PM

Overcast night

74° 💧 None 💨 10 mph H 76%30.09 inHg

9:00 PM

Overcast night

73° 💧 None 💨 10 mph H 76%30.09 inHg

10:00 PM

Overcast night

72° 💧 None 💨 11 mph H 77%30.12 inHg

11:00 PM

Overcast night

71° 💧 None 💨 10 mph H 79%30.12 inHg

Thursday

12:00 AM

Overcast night

70° 💧 0.001 in 💨 9 mph H 81%30.12 inHg

1:00 AM

Partly cloudy night

69° 💧 0.001 in 💨 10 mph H 84%30.09 inHg

2:00 AM

Partly cloudy night

68° 💧 0.003 in 💨 10 mph H 85%30.09 inHg

3:00 AM

Light rain

66° 💧 0.011 in 💨 10 mph H 88%30.09 inHg

4:00 AM

Mostly cloudy night

65° 💧 0.004 in 💨 11 mph H 88%30.09 inHg

5:00 AM

Partly cloudy night

64° 💧 0.003 in 💨 10 mph H 90%30.09 inHg

6:00 AM

Severe thunderstorms

63° 💧 0.327 in 💨 10 mph H 96%30.09 inHg

7:00 AM

Thunderstorms

63° 💧 0.259 in 💨 9 mph H 97%30.12 inHg

8:00 AM

Light rain

63° 💧 0.075 in 💨 10 mph H 97%30.12 inHg

9:00 AM

Light rain

64° 💧 0.060 in 💨 10 mph H 97%30.15 inHg

10:00 AM

Light rain

65° 💧 0.090 in 💨 12 mph H 92%30.12 inHg

11:00 AM

Light rain

66° 💧 0.011 in 💨 11 mph H 86%30.15 inHg

12:00 PM

Light rain

69° 💧 0.006 in 💨 12 mph H 76%30.12 inHg

1:00 PM

Overcast

70° 💧 0.001 in 💨 12 mph H 72%30.12 inHg

2:00 PM

Overcast

71° 💧 None 💨 12 mph H 69%30.09 inHg

3:00 PM

Overcast

73° 💧 0.001 in 💨 12 mph H 67%30.09 inHg

4:00 PM

Overcast

72° 💧 None 💨 11 mph H 68%30.06 inHg

5:00 PM

Overcast

73° 💧 None 💨 12 mph H 65%30.06 inHg

6:00 PM

Overcast

73° 💧 None 💨 9 mph H 66%30.06 inHg

7:00 PM

Overcast

71° 💧 None 💨 12 mph H 66%30.09 inHg

8:00 PM

Overcast night

69° 💧 None 💨 12 mph H 68%30.09 inHg

9:00 PM

Partly cloudy night

67° 💧 None 💨 12 mph H 69%30.09 inHg

10:00 PM

Clear night

66° 💧 None 💨 10 mph H 72%30.12 inHg

11:00 PM

Partly cloudy night

64° 💧 None 💨 9 mph H 74%30.12 inHg

Friday

12:00 AM

Mostly cloudy night

64° 💧 None 💨 10 mph H 74%30.09 inHg

1:00 AM

Mostly clear night

63° 💧 None 💨 9 mph H 75%30.09 inHg

2:00 AM

Mostly cloudy night

62° 💧 None 💨 9 mph H 76%30.09 inHg

3:00 AM

Overcast night

62° 💧 None 💨 10 mph H 74%30.06 inHg

4:00 AM

Overcast night

62° 💧 None 💨 10 mph H 74%30.06 inHg

5:00 AM

Partly cloudy night

62° 💧 None 💨 10 mph H 74%30.06 inHg

6:00 AM

Mostly clear night

61° 💧 None 💨 10 mph H 75%30.06 inHg

7:00 AM

Clear night

60° 💧 None 💨 9 mph H 77%30.09 inHg

8:00 AM

Sunny

59° 💧 None 💨 10 mph H 77%30.09 inHg

5:00 PM

Sunny

73° 💧 None 💨 9 mph H 42%30.00 inHg

8:00 PM

Clear night

65° 💧 None 💨 8 mph H 58%30.03 inHg

11:00 PM

Clear night

60° 💧 None 💨 5 mph H 72%30.06 inHg

Saturday

2:00 AM

Clear night

57° 💧 None 💨 5 mph H 78%30.03 inHg

5:00 AM

Clear night

56° 💧 None 💨 6 mph H 81%30.00 inHg

8:00 AM

Sunny

57° 💧 None 💨 7 mph H 69%30.06 inHg

11:00 AM

Sunny

69° 💧 None 💨 9 mph H 44%30.06 inHg

2:00 PM

Sunny

76° 💧 None 💨 8 mph H 29%30.00 inHg

5:00 PM

Sunny

77° 💧 None 💨 8 mph H 28%29.97 inHg

8:00 PM

Clear night

65° 💧 None 💨 5 mph H 55%29.97 inHg

11:00 PM

Clear night

59° 💧 None 💨 3 mph H 70%30.00 inHg

Sunday

2:00 AM

Mostly clear night

55° 💧 None 💨 3 mph H 81%29.94 inHg

5:00 AM

Mostly clear night

54° 💧 None 💨 6 mph H 80%29.94 inHg

8:00 AM

Overcast

55° 💧 None 💨 6 mph H 81%29.94 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 4 mph H 45%29.94 inHg

2:00 PM

Partly cloudy

80° 💧 None 💨 6 mph H 35%29.88 inHg

5:00 PM

Partly cloudy

81° 💧 None 💨 6 mph H 32%29.83 inHg

8:00 PM

Mostly cloudy night

69° 💧 None 💨 4 mph H 55%29.85 inHg

11:00 PM

Clear night

62° 💧 None 💨 1 mph H 69%29.88 inHg

Monday

2:00 AM

Mostly clear night

58° 💧 None 💨 4 mph H 76%29.88 inHg

5:00 AM

Clear night

57° 💧 None 💨 4 mph H 76%29.88 inHg

8:00 AM

Sunny

58° 💧 None 💨 5 mph H 77%29.94 inHg

11:00 AM

Sunny

76° 💧 None 💨 4 mph H 41%29.94 inHg

2:00 PM

Sunny

84° 💧 None 💨 3 mph H 28%29.88 inHg

8:00 PM

Mostly cloudy night

81° 💧 None 💨 3 mph H 35%29.85 inHg

Tuesday

2:00 AM

Clear night

71° 💧 None 💨 1 mph H 49%29.85 inHg

8:00 AM

Sunny

61° 💧 None 💨 2 mph H 73%29.88 inHg

2:00 PM

Sunny

60° 💧 None 💨 4 mph H 75%29.94 inHg

8:00 PM

Clear night

85° 💧 None 💨 2 mph H 31%29.91 inHg

Wednesday

2:00 AM

Clear night

72° 💧 None 💨 5 mph H 43%29.91 inHg

8:00 AM

Sunny

65° 💧 None 💨 4 mph H 91%29.94 inHg

2:00 PM

Sunny

64° 💧 None 💨 5 mph H 97%29.97 inHg

8:00 PM

Clear night

87° 💧 None 💨 6 mph H 35%29.94 inHg

Thursday

2:00 AM

Clear night

77° 💧 None 💨 9 mph H 53%29.91 inHg

8:00 AM

Sunny

69° 💧 None 💨 4 mph H 98%29.97 inHg

2:00 PM

Overcast

68° 💧 None 💨 6 mph H 99%30.00 inHg

8:00 PM

Overcast night

86° 💧 None 💨 8 mph H 56%29.97 inHg

Friday

2:00 AM

Overcast night

74° 💧 None 💨 7 mph H 87%30.00 inHg

8:00 AM

Mostly cloudy

71° 💧 None 💨 5 mph H 97%30.00 inHg

2:00 PM

Mostly sunny

71° 💧 None 💨 1 mph H 98%30.00 inHg

8:00 PM

Overcast night

86° 💧 None 💨 5 mph H 56%29.97 inHg

Saturday

2:00 AM

Mostly clear night

74° 💧 None 💨 3 mph H 91%29.94 inHg

8:00 AM

Sunny

70° 💧 None 💨 4 mph H 99%29.91 inHg

2:00 PM

Overcast

70° 💧 None 💨 3 mph H 98%29.94 inHg

8:00 PM

Mostly clear night

85° 💧 None 💨 3 mph H 59%29.88 inHg

Sunday

2:00 AM

Mostly clear night

76° 💧 None 💨 5 mph H 80%29.83 inHg

8:00 AM

Sunny

72° 💧 None 💨 5 mph H 97%29.83 inHg

2:00 PM

Sunny

71° 💧 None 💨 5 mph H 98%29.83 inHg

8:00 PM

Mostly clear night

88° 💧 None 💨 8 mph H 52%29.77 inHg

Monday

2:00 AM

Clear night

76° 💧 None 💨 5 mph H 54%29.77 inHg

8:00 AM

Sunny

66° 💧 None 💨 7 mph H 67%29.85 inHg

2:00 PM

Sunny

61° 💧 None 💨 6 mph H 79%29.91 inHg

8:00 PM

Clear night

79° 💧 None 💨 4 mph H 38%29.91 inHg

Tuesday

2:00 AM

Clear night

69° 💧 None 💨 3 mph H 62%29.88 inHg

8:00 AM

Overcast

62° 💧 None 💨 1 mph H 73%29.91 inHg

2:00 PM

Mostly cloudy

60° 💧 None 💨 6 mph H 70%29.97 inHg

8:00 PM

Overcast night

79° 💧 None 💨 1 mph H 38%29.91 inHg

Wednesday

2:00 AM

Overcast night

70° 💧 None 💨 0 mph H 56%29.88 inHg

8:00 AM

Sunny

62° 💧 None 💨 5 mph H 73%29.88 inHg

2:00 PM

Overcast

60° 💧 None 💨 7 mph H 60%29.94 inHg

In Sumter and, more broadly, across the state of South Carolina: This morning, clear skies and warm temperatures will set the tone, with lows around 72 degrees and light southeast winds at up to 4 mph. As the day progresses, temperatures will rise into the upper 80s and low 90s, creating hot conditions. The wind will remain gentle, with occasional gusts reaching 12 mph. An isolated shower is unlikely but cannot be entirely ruled out, with a maximum probability of 25%. Overall, expect a hot and dry day, with plenty of sunshine and light breezes.

15-Day Weather Outlook for Sumter

TomorrowTomorrow

Partly cloudy 80°/71° 💧 None 💨 12 mph

Thursday, Sep 24Thu Sep 24

Severe thunderstorms 73°/63° 💧 None 💨 12 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 72°/58° 💧 None 💨 10 mph

Saturday, Sep 26Sat Sep 26

Sunny 77°/54° 💧 None 💨 9 mph

Sunday, Sep 27Sun Sep 27

Mostly sunny 79°/54° 💧 None 💨 8 mph

Monday, Sep 28Mon Sep 28

Sunny 83°/56° 💧 None 💨 5 mph

Tuesday, Sep 29Tue Sep 29

Mostly cloudy 86°/61° 💧 None 💨 5 mph

Wednesday, Sep 30Wed Sep 30

Mostly sunny 85°/64° 💧 0.002 in 💨 5 mph

Thursday, Oct 1Thu Oct 1

Mostly sunny 85°/66° 💧 0.002 in 💨 8 mph

Friday, Oct 2Fri Oct 2

Mostly sunny 84°/65° 💧 0.001 in 💨 8 mph

Saturday, Oct 3Sat Oct 3

Light rain 84°/66° 💧 0.013 in 💨 7 mph

Sunday, Oct 4Sun Oct 4

Overcast 87°/68° 💧 0.032 in 💨 5 mph

Monday, Oct 5Mon Oct 5

Mostly sunny 90°/67° 💧 None 💨 5 mph

Tuesday, Oct 6Tue Oct 6

Sunny 91°/67° 💧 None 💨 4 mph

Wednesday, Oct 7Wed Oct 7

Sunny 80°/80° 💧 None 💨 6 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Sumter

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Sumter

Hourly forecast · Updated every 2 hours

Good

Nearest forecast value 9:00 PM

PM2.5 Fine particles Good 5,4µg/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 5,9µg/m³

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

O₃ Ozone Good 32,0µg/m³

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

NO₂ Nitrogen dioxide Good 4,3µg/m³

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

Air quality is favorable for outdoor activities.

UV & HEALTH

UV, Sun & Health Outlook in Sumter

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 4,1Moderate 😊Good

Tomorrow UV 4,3Moderate 🙂Fair

Thursday UV 2,1Low 😊Good

Friday UV 7,0High 😐Moderate

Saturday UV 7,0High 😐Moderate

Sunday UV 7,0High —Unavailable

Monday UV 7,0High —Unavailable

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

Moderate UV risk

Sunglasses and sun protection are recommended for prolonged exposure.

Good air quality

Air quality is good and outdoor activities can be enjoyed normally.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Sumter

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · SUMTER, SOUTH CAROLINA

Tonight's Stargazing & Shooting Stars

Good observing conditions. Best local viewing window: 1:00 AM–2:00 AM.

71/100Best-hour score

BEST TIME TONIGHT 1:00 AM–2:00 AM Astronomical darkness: 8:42 PM–5:47 AM

☁ Cloud cover 18% Real hourly forecast for the best viewing hour.

☾ Moonlight 87% Waxing Gibbous · Moon about 29° above the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 37° high at the best hour.

✦ Estimated visible meteors 0–1/hour Local estimate after weather, moonlight and radiant-height adjustments.

Chance ≥1 meteor in 30 min28%

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

SEP 20–NOV 20

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

ACTIVE NOW

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

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% 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

Explore current conditions and forecasts for other locations.

Forecast data for Sumter were last refreshed today at 8:43 PM. The current forecast period extends through 24/09/2026 at 6:00 PM. 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.