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September Weather in Springfield, United States

Last updated: June 24, 2025

In September, the average temperature in Springfield, United States hovers around 22°C (72°F). Be prepared for a range, as it can dip to a chilly 8°C (47°F) or soar up to a sweltering 36°C (97°F). Expect about 126 mm (5.0 in) of precipitation over 9 days, contributing to an average humidity of 71%. Make sure to pack accordingly!

September Temperature in Springfield

In September in Springfield, the average temperature is 22°C (72°F), with maximums reaching 36°C (97°F) and minimums dropping as low as 8°C (47°F). This weather makes it an ideal time for outdoor activities and exploring the local attractions while enjoying comfortable 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 (72°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec374149566874787672614642
Data source: Temperature data for Springfield generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Springfield

In Springfield in September, the precipitation amount is 126 mm (5.0 in) spread over 9 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 126 mm (5.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9815313914811916511010612610991129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Springfield

In Springfield in September humidity is 71%. With an average temperature of 22°C (72°F), this humidity feels like the air is thick and slightly stifling, making outdoor activities require frequent breaks to stay hydrated and cool.

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 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%82%83%83%80%74%71%78%88%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec3579101111109753
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.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)98 mm (3.9 inches)87%moderate
February Weather5°C (42°F)153 mm (6.0 inches)86%moderate
March Weather9°C (49°F)139 mm (5.5 inches)86%high
April Weather14°C (57°F)148 mm (5.8 inches)82%very high
May Weather20°C (68°F)119 mm (4.7 inches)82%very high
June Weather24°C (75°F)165 mm (6.5 inches)83%extreme
July Weather26°C (79°F)110 mm (4.3 inches)80%extreme
August Weather25°C (77°F)106 mm (4.2 inches)74%very high
September Weather22°C (72°F)126 mm (5.0 inches)71%very high
October Weather16°C (61°F)109 mm (4.3 inches)78%high
November Weather8°C (46°F)91 mm (3.6 inches)88%moderate
December Weather5°C (42°F)129 mm (5.1 inches)88%moderate

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