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September Weather in College City, United States

Last updated: June 24, 2025

In September, the average temperature in College City, United States is a pleasant 24°C (75°F). However, temperatures can vary significantly, dipping to a cool 8°C (47°F) at night and soaring to a scorching 36°C (96°F) during the day. Expect about 72 mm (2.8 in) of precipitation over 7 days, with an average humidity level of 68%.

September Temperature in College City

In September in College City, the average temperature is 24°C (75°F). The maximum can reach 36°C (96°F), while the minimum can drop to as low as 8°C (47°F). Pack accordingly for a mix of warm days and cooler nights during your travels.

September Weather in College City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in College City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In College City, September typically has an average temperature of 24°C (75°F), with highs reaching up to 36°C (96°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec394252597077817975624844
Data source: Temperature data for College City 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 College City

In College City in September, the total precipitation amount is 72 mm (2.8 in) over the course of 7 days.

September Precipitation Trends in College City

The chart displays monthly precipitation patterns in College City, 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 College City, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec941371471731679890116721179299
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in College City

In College City in September, humidity is 68%. With an average temperature of 24°C (75°F), this humidity feels like a warm, enveloping embrace that can leave travelers feeling sticky and slightly fatigued, making it essential to stay hydrated and take breaks in shaded areas.

September Average Humidity in College City

This chart illustrates the average monthly humidity levels in College City, 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 College City is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%80%80%83%83%76%69%68%72%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in College City

In College City 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 College City.

Maximum UV Index Levels in College City for September

The chart shows the monthly maximum UV Index (UVI) for College City 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 College City typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36810101111109753
Data source: College City 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 College City Compares to Other Months

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

This table compares monthly weather conditions in College City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)94 mm (3.7 inches)83%moderate
February Weather5°C (42°F)137 mm (5.4 inches)81%high
March Weather11°C (52°F)147 mm (5.8 inches)80%very high
April Weather15°C (59°F)173 mm (6.8 inches)80%very high
May Weather21°C (70°F)167 mm (6.6 inches)83%very high
June Weather25°C (78°F)98 mm (3.8 inches)83%extreme
July Weather27°C (82°F)90 mm (3.6 inches)76%extreme
August Weather26°C (79°F)116 mm (4.6 inches)69%very high
September Weather24°C (75°F)72 mm (2.8 inches)68%very high
October Weather17°C (62°F)117 mm (4.6 inches)72%high
November Weather9°C (48°F)92 mm (3.6 inches)83%moderate
December Weather7°C (44°F)99 mm (3.9 inches)86%moderate

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