October Weather in Sumter, United States

Last updated: June 24, 2025

In Sumter, United States, the average temperature in October hovers around 21°C (69°F). However, temperatures can vary widely, with a minimum of 2°C (36°F) and a scorching maximum of 38°C (100°F). Expect about 56 mm (2.2 in) of precipitation over 9 days, coupled with an average humidity of 78%. Whether you enjoy the heat or prefer cooler days, be prepared for the diversity of weather this month!

October Temperature in Sumter

In October in Sumter, the average temperature is 21°C (69°F). The maximum can reach 38°C (100°F), while the minimum can dip as low as 2°C (36°F). Travelers should be prepared for a wide range of temperatures and plan accordingly for both warm days and cooler evenings.

October Weather in Sumter: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Sumter, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sumter, October typically has an average temperature of 21°C (69°F), with highs reaching up to 38°C (100°F) and lows dropping to around 2°C (36°F).

Data source: Temperature data for Sumter generated using information from the Copernicus Climate Change Service.

October Precipitation in Sumter

In Sumter in October, the precipitation amount is 56 mm (2.2 in) over a period of 9 days.

October Precipitation Trends in Sumter

The chart displays monthly precipitation patterns in Sumter, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Sumter, October typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Sumter

In Sumter in October, humidity is 78%. With an average temperature of 21°C (69°F), this humidity feels like a warm embrace that clings to your skin, making outdoor activities feel more intense and leaving you yearning for refreshing breezes or a cool drink as you explore.

October Average Humidity in Sumter

This chart illustrates the average monthly humidity levels in Sumter, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Sumter is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Sumter

In Sumter in October, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Sumter.

Maximum UV Index Levels in Sumter for October

The chart shows the monthly maximum UV Index (UVI) for Sumter in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in Sumter typically reaches 8, which falls under the very high exposure category.

Data source: Sumter October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How October Weather in Sumter Compares to Other Months

Weather in Sumter varies notably across the year, with each month offering distinct climate conditions. This page compares October’s weather to other months in Sumter, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Sumter, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	78 mm (3.1 inches)	86%	moderate
February Weather	12°C (54°F)	95 mm (3.7 inches)	81%	high
March Weather	14°C (58°F)	70 mm (2.8 inches)	81%	very high
April Weather	18°C (65°F)	102 mm (4.0 inches)	79%	very high
May Weather	23°C (74°F)	97 mm (3.8 inches)	75%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	75%	extreme
July Weather	28°C (82°F)	144 mm (5.7 inches)	80%	extreme
August Weather	27°C (81°F)	128 mm (5.0 inches)	81%	very high
September Weather	25°C (78°F)	136 mm (5.4 inches)	83%	very high
October Weather	21°C (69°F)	56 mm (2.2 inches)	78%	very high
November Weather	13°C (55°F)	67 mm (2.6 inches)	85%	high
December Weather	10°C (51°F)	141 mm (5.5 inches)	87%	moderate