Sumter weather in September 2025

The temperatures in Sumter in September are comfortable with low of 19°C and and high up to 29°C.

You can expect about 3 to 8 days of rain in Sumter during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Sumter in September 2025.

If you’re planning to visit Sumter in the near future, we highly recommend that you review the 14 day weather forecast for Sumter before you arrive.

Temperatures

29° / 19°

Rainy Days

Snowy Days

Dry Days

Rainfall

135

Sun Hours

7.6

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 32° /20°	2 30° /20°	3 30° /19°	4 30° /19°	5 31° /21°	6 30° /21°
7 30° /21°	8 30° /20°	9 28° /20°	10 27° /19°	11 29° /20°	12 29° /20°	13 28° /21°
14 29° /19°	15 29° /19°	16 26° /18°	17 28° /18°	18 28° /18°	19 29° /19°	20 31° /19°
21 31° /20°	22 32° /20°	23 27° /18°	24 30° /16°	25 31° /19°	26 29° /19°	27 28° /19°
28 25° /17°	29 27° /17°	30 25° /18°

Explore the weather in Sumter in other months

Sumter annual weather

Month	Temperatures	Rainy Days	Dry Days	Snowy Days	Rainfall	Weather	More details
January	12° / 4°	5	25	1	96 mm	Ok	Sumter in January
February	14° / 5°	6	22	1	116 mm	Good	Sumter in February
March	18° / 9°	6	25	0	110 mm	Good	Sumter in March
April	23° / 13°	6	25	0	124 mm	Perfect	Sumter in April
May	27° / 17°	8	23	0	165 mm	Good	Sumter in May
June	31° / 21°	7	23	0	145 mm	Ok	Sumter in June
July	33° / 23°	9	22	0	169 mm	Ok	Sumter in July
August	32° / 22°	8	23	0	168 mm	Ok	Sumter in August
September	29° / 19°	6	24	0	135 mm	Good	Sumter in September
October	24° / 14°	3	28	0	103 mm	Perfect	Sumter in October
November	17° / 9°	3	26	0	73 mm	Good	Sumter in November
December	14° / 6°	6	25	0	135 mm	Good	Sumter in December

Temperatures in Sumter in September

Rain in Sumter in September

Weather in Sumter in September - FAQ

What is the average temperature in Sumter in September?

The average temperature in Sumter in September is 19/29° C.

What is the chance of rain in Sumter in September?

On average, there are 6 rainy days in Sumter during September.

Weather wise, is September a good time to visit Sumter?

The weather in Sumter in September is good.

Can it snow in Sumter in September?

On average, there are 0 snowy days in Sumter in September.

More about the weather in Sumter