Weather Sumter long-term weather forecast

Long-term weather forecast for Sumter for ten days.

Thursday, Sep 11

86 / 66°F

0.00 in

10 mph

73 °F	77 °F	2 am
72 °F	75 °F	8 am
86 °F	86 °F	2 pm
79 °F	82 °F	8 pm

sunrise 7:01 am
sunset 7:33 pm

HOURLY

During the day morning light rain, later morning overcast, in the afternoon cloudy. The highest temperature 86 °F. Total rainfall 0.04 in. At night clear. The lowest temperature 66 °F.

Interactive map weather South Carolina, USA

GPS: 33.9204; -80.3415

altitude: 177 ft
local time:

PLACES IN THE AREA

Weather forecast Sumter, South Carolina, USA extended forecast

Time			Precip.	Wind	Pressure	Humidity	Dew	total	Fog	Low	Middle	High
Thursday 09/11/2025
2 AM	light rain	73 °F 79 °F	0.03 in	8 fps 5 mph north-northeast	30.0 in	80 %	66 °F	100 %	0%	100%	0%	100%
8 AM	overcast	72 °F 77 °F	0.02 in	12 fps 8 mph north-northeast	30.1 in	86 %	66 °F	100 %	0%	100%	100%	91%
2 PM	cloudy	86 °F 86 °F	0.0 in	14 fps 10 mph northeast	30.0 in	36 %	55 °F	57 %	0%	0%	25%	43%
8 PM	cloudy	79 °F 81 °F	0.0 in	10 fps 7 mph east	30.0 in	50 %	59 °F	53 %	0%	3%	52%	0%
Friday 09/12/2025
2 AM	clear	72 °F 73 °F	0.0 in	9 fps 6 mph north-northeast	30.0 in	68 %	59 °F	0 %	0%	0%	0%	0%
8 AM	clear	68 °F 70 °F	0.0 in	12 fps 8 mph north-northeast	30.1 in	75 %	59 °F	0 %	0%	0%	0%	0%
2 PM	clear	84 °F 82 °F	0.0 in	16 fps 11 mph north-northeast	30.0 in	30 %	48 °F	0 %	0%	0%	0%	0%
8 PM	clear	77 °F 75 °F	0.0 in	12 fps 8 mph northeast	30.0 in	39 %	50 °F	0 %	0%	0%	0%	0%

Sumter, South Carolina, USA - information

State: South Carolina, USA

GPS coordinates: 33.9204; -80.3415

Time zone: America / New York time difference in hours with time in NY is -6 hours

Population: 40 816
Altitude: 177 ft
The administrative part:

South Carolina, Columbia
Sumter County, Sumter

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Weather Sumter, South Carolina, USA. Weather forecast Sumter.

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Data source

Weather forecast for Sumter is supplied by MET Norway Norwegian Meteorological Institute and the NRK.

Feels like

To calculate the perceived temperature, we use the Australian Apparent Temperature (AAT) model, which is designed for year-round calculations and takes air humidity into account in addition to temperature and wind speed.

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Astronomical information Sumter

data are always in the local time

Sun and light

Sept. 11, 2025

Sunrise:	Sunset:
7:01 am	7:33 pm
Noon:	Length of day:
1:17 pm	12:31
Start of civil twilight*:	End of civil twilight*:
6:36 am	7:58 pm
Start of nautical twilight*:	End of nautical twilight*:
6:07 am	8:27 pm
Start of astronomical twilight*:	End of astronomical twilight*:
5:37 am	8:57 pm
* What is Twilight?

Moon and moon phases

Moonrise:	Moonset:
09/10/2025 9:14 pm	09/11/2025 11:23 am
Next new moon:	Next full moon:
09/21/2025	10/06/2025