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September Weather in Marquette, United States

Last updated: June 24, 2025

In Marquette, United States, the average temperature in September is a pleasant 23°C (73°F). However, temperatures can vary significantly, with a minimum of 5°C (42°F) and a scorching maximum of 37°C (99°F). During this month, expect about 67 mm (2.6 in) of precipitation spread over 7 days, accompanied by an average humidity level of 73%. Whether you're enjoying the warm days or preparing for some rain, be ready for a dynamic climate!

September Temperature in Marquette

In September in Marquette, the average temperature is 23°C (73°F). Maximums can reach 37°C (99°F), while minimums can drop as low as 5°C (42°F). Be prepared for a wide range of temperatures, so pack accordingly for your travels!

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

The chart illustrates September temperature patterns in Marquette, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Marquette, September typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (99°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec323347556578817873574537
Data source: Temperature data for Marquette 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 Marquette

In Marquette in September, the total precipitation amount is 67 mm (2.6 in) over a span of 7 days.

September Precipitation Trends in Marquette

The chart displays monthly precipitation patterns in Marquette, 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 Marquette, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec28326959172847910567822825
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marquette

In Marquette in September humidity is 73%. With an average temperature of 23°C (73°F), this humidity feels like a thick blanket wrapping around you, making travel feel stifling and sticky, as every step seems to linger in the moisture-laden air.

September Average Humidity in Marquette

This chart illustrates the average monthly humidity levels in Marquette, 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 Marquette is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%78%67%70%82%81%80%80%74%71%79%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marquette

In Marquette 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 Marquette.

Maximum UV Index Levels in Marquette for September

The chart shows the monthly maximum UV Index (UVI) for Marquette 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 Marquette typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101111109743
Data source: Marquette 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 Marquette Compares to Other Months

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

This table compares monthly weather conditions in Marquette, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)28 mm (1.1 inches)74%moderate
February Weather1°C (33°F)32 mm (1.2 inches)78%high
March Weather8°C (47°F)69 mm (2.7 inches)67%high
April Weather13°C (55°F)59 mm (2.3 inches)70%very high
May Weather19°C (66°F)172 mm (6.8 inches)82%very high
June Weather26°C (78°F)84 mm (3.3 inches)81%extreme
July Weather27°C (81°F)79 mm (3.1 inches)80%extreme
August Weather25°C (78°F)105 mm (4.1 inches)80%very high
September Weather23°C (73°F)67 mm (2.6 inches)73%very high
October Weather14°C (57°F)82 mm (3.2 inches)71%high
November Weather7°C (45°F)28 mm (1.1 inches)79%moderate
December Weather3°C (38°F)25 mm (1.0 inches)83%moderate

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