September Weather in Springfield, United States

Last updated: June 24, 2025

In September, the average temperature in Springfield, United States is a warm 25°C (78°F), perfect for outdoor adventures. Expect temperatures to range from a cooler 11°C (52°F) to a sizzling 36°C (98°F). With 114 mm (4.5 in) of precipitation spread over 14 days, it's wise to be prepared for the occasional rain shower. The atmosphere feels quite humid, with an average humidity level of 83%, making it a truly tropical experience!

September Temperature in Springfield

In September in Springfield, the average temperature is 25°C (78°F). The maximum can reach 36°C (98°F) and the minimum can be as low as 11°C (52°F). This makes it an ideal time for travelers seeking warm weather while also providing cooler evenings for comfort.

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 25°C (78°F), with highs reaching up to 36°C (98°F) and lows dropping to around 11°C (52°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 114 mm (4.5 in) over the course of 14 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 114 mm (4.5 inches) of precipitation spread over approximately 14 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 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 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 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 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	11°C (52°F)	60 mm (2.4 inches)	86%	moderate
February Weather	14°C (57°F)	83 mm (3.3 inches)	81%	high
March Weather	16°C (61°F)	68 mm (2.7 inches)	81%	very high
April Weather	19°C (67°F)	85 mm (3.3 inches)	79%	very high
May Weather	23°C (75°F)	109 mm (4.3 inches)	75%	extreme
June Weather	26°C (79°F)	152 mm (6.0 inches)	75%	extreme
July Weather	27°C (82°F)	170 mm (6.7 inches)	80%	extreme
August Weather	27°C (81°F)	178 mm (7.0 inches)	81%	extreme
September Weather	25°C (78°F)	114 mm (4.5 inches)	83%	very high
October Weather	22°C (71°F)	76 mm (3.0 inches)	78%	very high
November Weather	14°C (58°F)	83 mm (3.3 inches)	85%	high
December Weather	12°C (54°F)	118 mm (4.6 inches)	87%	moderate