September Weather in Holly Hill, United States

Last updated: June 24, 2025

In September, the average temperature in Holly Hill, United States is a warm 27°C (81°F). Expect lows around 22°C (71°F) and highs reaching up to 34°C (94°F). With an average humidity of 83% and 168 mm (6.6 in) of precipitation spread over 20 days, this month promises a mix of warmth and occasional showers, perfect for enjoying the lush surroundings.

September Temperature in Holly Hill

In September in Holly Hill, the average temperature is 27°C (81°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 22°C (71°F). This pleasant climate makes Holly Hill an ideal destination for travelers seeking warm and comfortable weather.

September Weather in Holly Hill: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Holly Hill, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Holly Hill, September typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (71°F).

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

September Precipitation in Holly Hill

In Holly Hill in September, the precipitation amount is 168 mm (6.6 in) over the course of 20 days.

September Precipitation Trends in Holly Hill

The chart displays monthly precipitation patterns in Holly Hill, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Holly Hill, September typically receives around 168 mm (6.6 inches) of precipitation spread over approximately 20 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Holly Hill

In Holly Hill in September humidity is 83%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making sightseeing and outdoor activities feel more exhausting and requiring frequent breaks to relax in the shade or cool off.

September Average Humidity in Holly Hill

This chart illustrates the average monthly humidity levels in Holly Hill, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Holly Hill is approximately 83%, offering insight into how humid the weather typically is during this month.

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

September UV Index in Holly Hill

In Holly Hill in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Holly Hill.

Maximum UV Index Levels in Holly Hill for September

The chart shows the monthly maximum UV Index (UVI) for Holly Hill in September, 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 September, the maximum UV index in Holly Hill typically reaches 11, which falls under the extreme exposure category.

Data source: Holly Hill September 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 September Weather in Holly Hill Compares to Other Months

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

This table compares monthly weather conditions in Holly Hill, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	47 mm (1.9 inches)	83%	moderate
February Weather	19°C (66°F)	60 mm (2.3 inches)	80%	very high
March Weather	19°C (67°F)	28 mm (1.1 inches)	75%	very high
April Weather	22°C (72°F)	76 mm (3.0 inches)	70%	extreme
May Weather	25°C (77°F)	100 mm (4.0 inches)	68%	extreme
June Weather	26°C (80°F)	162 mm (6.4 inches)	75%	extreme
July Weather	27°C (81°F)	174 mm (6.9 inches)	79%	extreme
August Weather	28°C (82°F)	161 mm (6.3 inches)	81%	extreme
September Weather	27°C (81°F)	168 mm (6.6 inches)	83%	extreme
October Weather	25°C (78°F)	107 mm (4.2 inches)	81%	very high
November Weather	21°C (70°F)	72 mm (2.9 inches)	82%	high
December Weather	18°C (65°F)	79 mm (3.1 inches)	84%	moderate