October Weather in Harleyville, United States

Last updated: June 24, 2025

In October, the average temperature in Harleyville, United States is a comfortable 21°C (70°F), but be prepared for a range, with minimums dipping to 2°C (36°F) and highs soaring up to 37°C (99°F). Expect about 64 mm (2.5 in) of precipitation spread across 8 days, contributing to an average humidity of 78%. Stay hydrated and enjoy the climate!

October Temperature in Harleyville

In October in Harleyville, the average temperature is 21°C (70°F), with maximums reaching up to 37°C (99°F) and minimums as low as 2°C (36°F). Be prepared for a wide range of temperatures when traveling to Harleyville during this month.

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

The chart illustrates October temperature patterns in Harleyville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harleyville, October typically has an average temperature of 21°C (70°F), with highs reaching up to 37°C (99°F) and lows dropping to around 2°C (36°F).

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

October Precipitation in Harleyville

In Harleyville in October, the precipitation amount is 64 mm (2.5 in) over the course of 8 days.

October Precipitation Trends in Harleyville

The chart displays monthly precipitation patterns in Harleyville, 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 Harleyville, October typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 8 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 Harleyville

In Harleyville in October, humidity is 78%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that can leave travelers feeling sticky and slightly fatigued, making it important to stay hydrated and take frequent breaks from outdoor activities.

October Average Humidity in Harleyville

This chart illustrates the average monthly humidity levels in Harleyville, 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 Harleyville 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 Harleyville

In Harleyville 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 Harleyville.

Maximum UV Index Levels in Harleyville for October

The chart shows the monthly maximum UV Index (UVI) for Harleyville 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 Harleyville typically reaches 8, which falls under the very high exposure category.

Data source: Harleyville 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 Harleyville Compares to Other Months

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

This table compares monthly weather conditions in Harleyville, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	10°C (50°F)	73 mm (2.9 inches)	86%	moderate
February Weather	13°C (56°F)	98 mm (3.9 inches)	81%	high
March Weather	15°C (59°F)	75 mm (3.0 inches)	81%	very high
April Weather	19°C (66°F)	109 mm (4.3 inches)	79%	very high
May Weather	23°C (74°F)	96 mm (3.8 inches)	75%	extreme
June Weather	26°C (79°F)	122 mm (4.8 inches)	75%	extreme
July Weather	27°C (82°F)	166 mm (6.6 inches)	80%	extreme
August Weather	27°C (81°F)	144 mm (5.7 inches)	81%	extreme
September Weather	25°C (78°F)	117 mm (4.6 inches)	83%	very high
October Weather	21°C (70°F)	64 mm (2.5 inches)	78%	very high
November Weather	14°C (57°F)	66 mm (2.6 inches)	85%	high
December Weather	11°C (53°F)	135 mm (5.3 inches)	87%	moderate