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September Weather in Lexington, United States

Last updated: June 24, 2025

In Lexington, United States, the average temperature in September hovers around 24°C (76°F), with a minimum of 9°C (48°F) and a maximum reaching 37°C (100°F). Expect about 102 mm (4.0 in) of precipitation spread over 7 days, along with an average humidity of 64%. It’s a month of varied weather, perfect for enjoying both sunshine and refreshing rain!

September Temperature in Lexington

In September in Lexington, the average temperature is 24°C (76°F). Maximum temperatures can reach 37°C (100°F), while minimum temperatures can drop as low as 9°C (48°F). Be prepared for a wide range of weather conditions to make the most of your travel experience.

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 24°C (76°F), with highs reaching up to 37°C (100°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec414255607079838176635146
Data source: Temperature data for Lexington generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Lexington

In Lexington in September, the total precipitation amount is 102 mm (4.0 in) over a period of 7 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 102 mm (4.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec5359941321538052621021113538
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lexington

In Lexington in September, humidity is 64%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable but still enjoyable, as you may find yourself yearning for a refreshing breeze or a quick dip in the water.

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 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%75%75%83%82%78%68%64%71%82%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec46810101111109754
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.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)53 mm (2.1 inches)79%moderate
February Weather6°C (43°F)59 mm (2.3 inches)78%high
March Weather13°C (55°F)94 mm (3.7 inches)75%very high
April Weather16°C (60°F)132 mm (5.2 inches)75%very high
May Weather21°C (71°F)153 mm (6.0 inches)83%very high
June Weather26°C (79°F)80 mm (3.1 inches)81%extreme
July Weather28°C (83°F)52 mm (2.0 inches)78%extreme
August Weather27°C (82°F)62 mm (2.4 inches)68%very high
September Weather24°C (76°F)102 mm (4.0 inches)64%very high
October Weather17°C (63°F)111 mm (4.4 inches)71%high
November Weather11°C (52°F)35 mm (1.4 inches)82%moderate
December Weather8°C (46°F)38 mm (1.5 inches)87%moderate

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