September Weather in Springfield, United States

Last updated: June 24, 2025

In Springfield, United States, the average temperature in September hovers around 22°C (73°F), creating a pleasant climate for outdoor activities. Temperatures can fluctuate, with a minimum of 7°C (44°F) and a maximum reaching up to 34°C (94°F). Expect about 56 mm (2.2 in) of precipitation spread over 6 days, contributing to an average humidity of 64%. Enjoy this vibrant season!

September Temperature in Springfield

In September in Springfield, the average temperature is 22°C (73°F). The maximum can reach 34°C (94°F), and the minimum can be as low as 7°C (44°F). This makes Springfield a great destination for travelers seeking a pleasant climate with a range of temperatures.

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 22°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (44°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 precipitation amount is 56 mm (2.2 in) spread over 6 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 56 mm (2.2 inches) of precipitation spread over approximately 6 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 Springfield

In Springfield in September humidity is 64%. With an average temperature of 22°C (73°F), this humidity feels like a warm embrace, making traveling comfortable yet slightly sticky, as you enjoy the vibrant sights while needing to stay hydrated.

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 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 Springfield

In Springfield 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 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 9, 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	1°C (35°F)	82 mm (3.2 inches)	81%	moderate
February Weather	3°C (38°F)	87 mm (3.4 inches)	78%	high
March Weather	9°C (49°F)	145 mm (5.7 inches)	76%	high
April Weather	13°C (55°F)	161 mm (6.4 inches)	78%	very high
May Weather	19°C (66°F)	179 mm (7.1 inches)	83%	very high
June Weather	24°C (75°F)	100 mm (3.9 inches)	83%	extreme
July Weather	26°C (79°F)	90 mm (3.5 inches)	78%	extreme
August Weather	24°C (76°F)	121 mm (4.8 inches)	68%	very high
September Weather	22°C (73°F)	56 mm (2.2 inches)	64%	very high
October Weather	15°C (58°F)	143 mm (5.6 inches)	70%	high
November Weather	8°C (46°F)	72 mm (2.8 inches)	83%	moderate
December Weather	5°C (41°F)	53 mm (2.1 inches)	87%	moderate