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September Weather in Urbana, United States

Last updated: June 24, 2025

In Urbana, United States, the average temperature in September hovers around 19°C (67°F). However, temperatures can vary significantly, with a minimum of 2°C (36°F) and a maximum reaching up to 33°C (92°F). Expect 121 mm (4.8 in) of precipitation over 10 days, and a relatively high average humidity of 74%.

September Temperature in Urbana

In September in Urbana, the average temperature is 19°C (67°F), with maximums reaching 33°C (92°F) and minimums dropping as low as 2°C (36°F). This range makes it a great time to visit for those who enjoy mild weather but should be prepared for both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Urbana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Urbana, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec202237476172757266523730
Data source: Temperature data for Urbana 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 Urbana

In Urbana in September, the precipitation amount is 121 mm (4.8 in) spread over a period of 10 days.

September Precipitation Trends in Urbana

The chart displays monthly precipitation patterns in Urbana, 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 Urbana, September typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec4655697816513399831211424642
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Urbana

In Urbana in September, humidity is 74%. With an average temperature of 19°C (67°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel stifling, often leading travelers to seek shade and hydrate frequently.

September Average Humidity in Urbana

This chart illustrates the average monthly humidity levels in Urbana, 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 Urbana is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Urbana

In Urbana 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 Urbana.

Maximum UV Index Levels in Urbana for September

The chart shows the monthly maximum UV Index (UVI) for Urbana 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 Urbana typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec34589111098533
Data source: Urbana 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 Urbana Compares to Other Months

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

This table compares monthly weather conditions in Urbana, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (21°F)46 mm (1.8 inches)84%moderate
February Weather-6°C (22°F)55 mm (2.2 inches)85%moderate
March Weather3°C (37°F)69 mm (2.7 inches)84%moderate
April Weather9°C (48°F)78 mm (3.1 inches)83%very high
May Weather16°C (61°F)165 mm (6.5 inches)75%very high
June Weather22°C (73°F)133 mm (5.2 inches)79%extreme
July Weather24°C (75°F)99 mm (3.9 inches)75%very high
August Weather22°C (72°F)83 mm (3.3 inches)69%very high
September Weather19°C (67°F)121 mm (4.8 inches)74%very high
October Weather11°C (52°F)142 mm (5.6 inches)79%moderate
November Weather3°C (37°F)46 mm (1.8 inches)88%moderate
December Weather-1°C (30°F)42 mm (1.6 inches)82%moderate

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