September Weather in Springfield, United States

Last updated: June 24, 2025

The average temperature in Springfield, United States during September is a warm 26°C (80°F), but it can vary significantly with minimums of 15°C (60°F) and maximums reaching 35°C (95°F). Expect precipitation totaling 164 mm (6.5 in) over approximately 15 days, contributing to an average humidity level of 79%. Be prepared for a mix of comfort and moisture as you enjoy the season!

September Temperature in Springfield

In September in Springfield, the average temperature is 26°C (80°F). Maximums can reach 35°C (95°F), and minimums can be as low as 15°C (60°F). This pleasant climate makes Springfield an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Springfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Springfield, September typically has an average temperature of 26°C (80°F), with highs reaching up to 35°C (95°F) and lows dropping to around 15°C (60°F).

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

September Precipitation in Springfield

In Springfield in September, the total precipitation amount is 164 mm (6.5 in) spread over the course of 15 days.

September Precipitation Trends in Springfield

The chart displays monthly precipitation patterns in Springfield, 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 Springfield, September typically receives around 164 mm (6.5 inches) of precipitation spread over approximately 15 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 Springfield

In Springfield in September, humidity is 79%. With an average temperature of 26°C (80°F), this humidity feels like an enveloping warm blanket, making travel feel slightly sluggish and prompting frequent hydration breaks to stay comfortable while exploring the sights.

September Average Humidity in Springfield

This chart illustrates the average monthly humidity levels in Springfield, 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 Springfield is approximately 79%, 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 Springfield

In Springfield in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Springfield.

Maximum UV Index Levels in Springfield for September

The chart shows the monthly maximum UV Index (UVI) for Springfield 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 Springfield typically reaches 10, which falls under the very high exposure category.

Data source: Springfield 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 Springfield Compares to Other Months

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

This table compares monthly weather conditions in Springfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	89 mm (3.5 inches)	83%	moderate
February Weather	16°C (60°F)	123 mm (4.8 inches)	82%	very high
March Weather	18°C (64°F)	56 mm (2.2 inches)	79%	very high
April Weather	20°C (68°F)	118 mm (4.6 inches)	77%	very high
May Weather	24°C (76°F)	100 mm (3.9 inches)	74%	extreme
June Weather	27°C (81°F)	180 mm (7.1 inches)	70%	extreme
July Weather	28°C (82°F)	172 mm (6.8 inches)	78%	extreme
August Weather	27°C (82°F)	200 mm (7.9 inches)	78%	extreme
September Weather	26°C (80°F)	164 mm (6.5 inches)	79%	very high
October Weather	23°C (74°F)	100 mm (3.9 inches)	74%	very high
November Weather	16°C (62°F)	48 mm (1.9 inches)	83%	high
December Weather	14°C (58°F)	131 mm (5.2 inches)	86%	moderate