September Weather in Saint Matthews, United States

Last updated: June 24, 2025

In Saint Matthews, United States, the average temperature in September hovers around 25°C (78°F). You can expect a comfortable range with minimums dipping to 11°C (52°F) and maximums soaring to 37°C (99°F). However, be prepared for some rain, as the region experiences an average precipitation of 107 mm (4.2 in) over about 9 days. With an average humidity level of 83%, you'll want to stay hydrated while enjoying the beautiful surroundings!

September Temperature in Saint Matthews

In September in Saint Matthews, the average temperature is 25°C (78°F). The maximum can reach 37°C (99°F), while the minimum can drop as low as 11°C (52°F). This mild climate makes Saint Matthews an ideal destination for travelers seeking warm and pleasant weather.

September Weather in Saint Matthews: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint Matthews, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Matthews, September typically has an average temperature of 25°C (78°F), with highs reaching up to 37°C (99°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Saint Matthews

In Saint Matthews in September, the precipitation amount is 107 mm (4.2 in), occurring over a span of 9 days.

September Precipitation Trends in Saint Matthews

The chart displays monthly precipitation patterns in Saint Matthews, 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 Saint Matthews, September typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 9 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Saint Matthews

In Saint Matthews in September, humidity is 83%. With an average temperature of 25°C (78°F), this humidity feels like stepping into a warm, damp embrace, making travel sticky and exhausting, as each movement can leave you drenched in sweat.

September Average Humidity in Saint Matthews

This chart illustrates the average monthly humidity levels in Saint Matthews, 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 Saint Matthews 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 Saint Matthews

In Saint Matthews 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 Saint Matthews.

Maximum UV Index Levels in Saint Matthews for September

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

Data source: Saint Matthews 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 Saint Matthews Compares to Other Months

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

This table compares monthly weather conditions in Saint Matthews, 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 (49°F)	80 mm (3.1 inches)	86%	moderate
February Weather	12°C (54°F)	96 mm (3.8 inches)	81%	high
March Weather	15°C (58°F)	73 mm (2.9 inches)	81%	very high
April Weather	19°C (66°F)	115 mm (4.5 inches)	79%	very high
May Weather	23°C (74°F)	100 mm (3.9 inches)	75%	extreme
June Weather	26°C (79°F)	118 mm (4.6 inches)	75%	extreme
July Weather	27°C (82°F)	150 mm (5.9 inches)	80%	extreme
August Weather	27°C (81°F)	133 mm (5.2 inches)	81%	extreme
September Weather	25°C (78°F)	107 mm (4.2 inches)	83%	very high
October Weather	21°C (69°F)	68 mm (2.7 inches)	78%	very high
November Weather	13°C (56°F)	64 mm (2.5 inches)	85%	high
December Weather	11°C (51°F)	133 mm (5.2 inches)	87%	moderate