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September Weather in Cicero, United States

Last updated: June 24, 2025

In September, the average temperature in Cicero, United States hovers around 21°C (70°F). Expect a range where the minimum can dip to 5°C (42°F), while the maximum can soar to 33°C (92°F). During this month, anticipate 77 mm (3.0 in) of precipitation over approximately 7 days, along with an average humidity level of 69%.

September Temperature in Cicero

In September in Cicero, the average temperature is 21°C (70°F). Maximum temperatures can reach 33°C (92°F), while the minimum can drop as low as 5°C (42°F). This variability makes Cicero an ideal destination for travelers looking for a diverse climate experience.

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

The chart illustrates September temperature patterns in Cicero, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cicero, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (92°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec303342526473767469574136
Data source: Temperature data for Cicero 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 Cicero

In Cicero in September, the precipitation amount is 77 mm (3.0 in) over the course of 7 days.

September Precipitation Trends in Cicero

The chart displays monthly precipitation patterns in Cicero, 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 Cicero, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec81911229213810410892771028775
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cicero

In Cicero in September humidity is 69%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but requiring occasional breaks for hydration and shade during your travels.

September Average Humidity in Cicero

This chart illustrates the average monthly humidity levels in Cicero, 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 Cicero is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cicero

In Cicero in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Cicero.

Maximum UV Index Levels in Cicero for September

The chart shows the monthly maximum UV Index (UVI) for Cicero 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 Cicero typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Cicero 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 Cicero Compares to Other Months

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

This table compares monthly weather conditions in Cicero, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)81 mm (3.2 inches)87%moderate
February Weather0°C (33°F)91 mm (3.6 inches)85%moderate
March Weather6°C (43°F)122 mm (4.8 inches)86%high
April Weather11°C (52°F)92 mm (3.6 inches)84%very high
May Weather18°C (64°F)138 mm (5.4 inches)79%very high
June Weather23°C (73°F)104 mm (4.1 inches)82%extreme
July Weather25°C (77°F)108 mm (4.3 inches)79%very high
August Weather23°C (74°F)92 mm (3.6 inches)70%very high
September Weather21°C (70°F)77 mm (3.0 inches)69%very high
October Weather14°C (58°F)101 mm (4.0 inches)76%high
November Weather5°C (42°F)87 mm (3.4 inches)88%moderate
December Weather2°C (36°F)75 mm (2.9 inches)87%low

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