September Weather in Lexington, United States

Last updated: June 24, 2025

In September, the average temperature in Lexington, United States hovers around 25°C (77°F), with a minimum of 11°C (52°F) and a maximum reaching up to 36°C (97°F). Expect an average precipitation of 106 mm (4.2 in) over approximately 8 days, and a notable average humidity of 82% that adds a touch of tropical ambiance to your experience!

September Temperature in Lexington

In September in Lexington, the average temperature is 25°C (77°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 11°C (52°F). This range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

September Weather in Lexington: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lexington, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lexington, September typically has an average temperature of 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Lexington

In Lexington in September, the precipitation amount is 106 mm (4.2 in) over a span of 8 days.

September Precipitation Trends in Lexington

The chart displays monthly precipitation patterns in Lexington, 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 Lexington, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 8 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 Lexington

In Lexington in September, humidity is 82%. With an average temperature of 25°C (77°F), this humidity feels like a warm, oppressive blanket enveloping you as you explore, making every step feel more laborious and prompting the need for frequent hydration breaks.

September Average Humidity in Lexington

This chart illustrates the average monthly humidity levels in Lexington, 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 Lexington is approximately 82%, 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 Lexington

In Lexington in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Lexington.

Maximum UV Index Levels in Lexington for September

The chart shows the monthly maximum UV Index (UVI) for Lexington 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 Lexington typically reaches 9, which falls under the very high exposure category.

Data source: Lexington 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 Lexington Compares to Other Months

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

This table compares monthly weather conditions in Lexington, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	103 mm (4.1 inches)	86%	moderate
February Weather	11°C (53°F)	120 mm (4.7 inches)	84%	high
March Weather	14°C (57°F)	89 mm (3.5 inches)	83%	very high
April Weather	18°C (64°F)	108 mm (4.2 inches)	81%	very high
May Weather	23°C (73°F)	108 mm (4.2 inches)	81%	extreme
June Weather	26°C (78°F)	97 mm (3.8 inches)	81%	extreme
July Weather	27°C (81°F)	102 mm (4.0 inches)	83%	extreme
August Weather	27°C (81°F)	117 mm (4.6 inches)	81%	very high
September Weather	25°C (77°F)	106 mm (4.2 inches)	82%	very high
October Weather	20°C (68°F)	112 mm (4.4 inches)	78%	very high
November Weather	12°C (54°F)	83 mm (3.3 inches)	86%	high
December Weather	10°C (50°F)	121 mm (4.8 inches)	89%	moderate