September Weather in Sparta, United States

Last updated: June 24, 2025

In September, the average temperature in Sparta, United States is a pleasant 23°C (73°F). However, temperatures can vary significantly, with a minimum of 8°C (47°F) and soaring up to 35°C (96°F). Expect 113 mm (4.4 in) of precipitation over 9 days, paired with an average humidity level of 64%. Enjoy the diverse weather that September brings!

September Temperature in Sparta

In September in Sparta, the average temperature is 23°C (73°F). Maximums can reach 35°C (96°F) and minimums can be as low as 8°C (47°F). This mild climate makes it an ideal time to explore and enjoy outdoor activities in Sparta.

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

The chart illustrates September temperature patterns in Sparta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sparta, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (96°F) and lows dropping to around 8°C (47°F).

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

September Precipitation in Sparta

In Sparta in September, the precipitation amount is 113 mm (4.4 in) over a period of 9 days.

September Precipitation Trends in Sparta

The chart displays monthly precipitation patterns in Sparta, 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 Sparta, September typically receives around 113 mm (4.4 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 Sparta

In Sparta in September, humidity is 64%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel quite comfortable yet slightly sticky, urging travelers to enjoy leisurely activities early in the day or seek shade during peak hours.

September Average Humidity in Sparta

This chart illustrates the average monthly humidity levels in Sparta, 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 Sparta is approximately 64%, 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 Sparta

In Sparta 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 Sparta.

Maximum UV Index Levels in Sparta for September

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

Data source: Sparta 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 Sparta Compares to Other Months

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

This table compares monthly weather conditions in Sparta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (40°F)	110 mm (4.3 inches)	87%	moderate
February Weather	7°C (46°F)	188 mm (7.4 inches)	87%	high
March Weather	11°C (52°F)	166 mm (6.5 inches)	85%	very high
April Weather	15°C (59°F)	149 mm (5.9 inches)	82%	very high
May Weather	20°C (69°F)	129 mm (5.1 inches)	83%	extreme
June Weather	24°C (75°F)	124 mm (4.9 inches)	82%	extreme
July Weather	26°C (79°F)	124 mm (4.9 inches)	78%	extreme
August Weather	25°C (77°F)	116 mm (4.6 inches)	67%	very high
September Weather	23°C (73°F)	113 mm (4.4 inches)	64%	very high
October Weather	17°C (63°F)	127 mm (5.0 inches)	74%	high
November Weather	9°C (49°F)	78 mm (3.1 inches)	87%	moderate
December Weather	7°C (45°F)	148 mm (5.8 inches)	88%	moderate