September Weather in Marquette, United States

Last updated: February 24, 2025

September in Marquette, United States, showcases a vibrant transition into autumn, with temperatures oscillating between a maximum of 31°C (88°F) and a minimum of 2°C (35°F). The average temperature sits comfortably at 15°C (59°F), offering a pleasant climate for outdoor activities. However, this month also brings 99 mm (3.9 in) of precipitation spread over 11 days, contributing to the region's lush scenery. With humidity levels around 74%, the air carries a crisp freshness that complements the changing foliage, making September a captivating time to experience Marquette's natural beauty.

September Temperature in Marquette

In September, Marquette experiences a notable transition as summer begins to give way to fall. The temperatures range from a minimum of 2°C (35°F) to a maximum of 31°C (88°F), showcasing a warm yet temperate month. The average temperature of 15°C (59°F) indicates that while the days remain pleasantly warm, especially during the first half of the month, there's a slight chill hinting at the approaching autumn. This time of year often brings vibrant foliage as the leaves start to change, offering a stunning backdrop to the mild weather. As summer warmth lingers, September stands out as a time for enjoying outdoor activities before the temperatures drop further in October.

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.
JanFebMarAprMayJunJulAugSepOctNovDec181727364961686559463224
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 September, Marquette experiences a significant transition in precipitation patterns, with 99 mm (3.9 in) of rain falling over 11 days. This amount reflects a slight decrease from the wetter months of August and June, yet remains robust, maintaining the region's lush landscape into the fall. The rainfall typically spurs vibrant autumn colors and prepares the area for the harsher winter months ahead. As the season progresses, October tends to bring even heavier precipitation, suggesting a gradual increase in moisture that sets the stage for the winter climate. Overall, September serves as a bridge between summer's lushness and the crisp, refreshing onset of autumn, showcasing Marquette's dynamic weather patterns.

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.
JanFebMarAprMayJunJulAugSepOctNovDec425955927510583109991206662
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Marquette

In September, Marquette experiences a slight increase in humidity, with levels reaching 74%, marking a continuation of the gradual decline observed throughout the summer months. As the year progresses from the highs of winter at 92% in January and February to the more moderate levels of July at 70%, September's humidity reflects a transitional phase. This shift not only indicates the waning warmth of summer but also foreshadows the return of the crisper air typical of fall. Overall, the data reveals a clear trend of decreasing humidity during the summer, followed by a subtle rise as autumn approaches, highlighting the city's dynamic climate.

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, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec92%92%88%86%78%74%70%71%74%81%86%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Marquette

As September rolls in Marquette, the UV Index settles at 7, indicating a high exposure category with a burn time of 25 minutes. This marks a gradual decline from the height of summer, where June and July both showcased a very high index of 9 and necessitated vigilant sun protection. The transition continues into October, where the UV Index drops further to 5, suggesting more moderate exposure as autumn progresses. Such trends highlight the importance of adapting sun safety habits with the changing seasons and remind residents to stay informed about UV levels. For more detailed information, visit Marquette UV Index.

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.
JanFebMarAprMayJunJulAugSepOctNovDec245789987532
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.

September Sunshine in Marquette

As summer transitions into autumn, September in Marquette offers a delightful embrace of sunshine, with 270 hours of radiant daylight illuminating the days. This month, while still basking in the glow of summer’s generosity, sees a noticeable decline in sunlight compared to the peak of July’s brilliance at 363 hours. Nevertheless, September stands out as a time of vibrant colors and comfortable temperatures, drawing in residents and visitors alike to enjoy the tail end of the warm season. This gradual decrease in sunshine, from the height of summer to the onset of fall, reflects a natural rhythm in Marquette's climate, paving the way for crisp October days ahead, where daylight dips further to 195 hours. The transformation is a reminder of nature's flow, linking the joy of summer's warmth with the tranquil beauty of autumn in this picturesque locale.

Monthly Sunshine Duration in Marquette: September Highlighted

The September sunshine duration represents the total number of hours Marquette experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec92h156h223h231h308h343h363h320h270h195h134h108h
Data source: Marquette September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Marquette During September

In Marquette, the likelihood of sunny weather experiences a significant shift as summer transitions into autumn. September boasts a 49% chance of sunshine, placing it right in the middle of the spectrum for the year. This is a notable decline from the summer's peak, where July and August show sun probabilities of 62% and 59% respectively. The warmer months' sunny disposition gives way to the cooler days of fall, as indicated by September's drop, yet it remains one of the more favorable months for enjoying clear skies compared to the dreary winter ahead. As the season changes, this trend sets the stage for the beauty of autumn in Marquette, where sunny September days become increasingly cherished.

Percentage of Sunny Days in September in Marquette

The chart illustrates the percentage of sunny days in Marquette throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Marquette experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec24%27%37%34%48%46%62%59%49%34%34%17%
Data source: Marquette September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Marquette in September

As September rolls in, Marquette experiences a noticeable shift in daylight, with 12 hours of sunlight gracing the days. This marks a decrease from the peak summer months, where daylight peaked at a solid 15 hours during June, July, and even a bit into August. The transition towards autumn is palpable, as the days gradually shorten, paving the way for the crisp, cozy vibes of fall. September serves as a gentle reminder of the cycles of nature, bridging the long, sunlit days of summer with the shorter light hours of the approaching winter months. The drop in daylight from summer hints at the impending chill, inviting residents to savor the remaining warmth and enjoy the vibrant foliage that follows.

Average Daylight Hours in Marquette for September

The chart illustrates the variation in daylight duration in Marquette throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 2m10h 19m11h 57m13h 36m15h 2m15h 45m15h 21m14h 5m12h 29m10h 50m9h 22m8h 37m
Data source: Marquette daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Marquette

In September, Marquette begins to feel a gentle shift in its winds, with an average speed of 3.9 m/s (9 mph)—a refreshing change as summer fades into fall. This slight uptick in wind speed signals a transition from the milder breezes of July and August, which saw averages of 2.8 m/s (6 mph) and 3.4 m/s (8 mph), respectively. As the season progresses, October maintains a similar pace at 3.6 m/s (8 mph), while the winds ramp up again in the late autumn months, peaking in November and December at 4.7 m/s (11 mph) and 4.8 m/s (11 mph). This gradual increase suggests that while September still enjoys a taste of summer's calm, it sets the stage for the brisker winds that define Marquette's fall and winter seasons.

Average September Wind Speed in Marquette

The chart displays monthly wind speed patterns in Marquette, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.74.14.63.83.62.92.83.43.9 m/s3.64.74.8
Data source: Marquette September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Marquette Compares to Other Months

The weather in Marquette changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Marquette and find detailed weather information for every month.

September and January showcase stark contrasts in weather. In September, temperatures can fluctuate between a chilly 2°C (35°F) at night and a warm 31°C (88°F) during the day, with an average of 15°C (59°F). This month also sees an average of 99 mm (3.9 in) of precipitation over 11 days, accompanied by a relative humidity of 74%. In stark contrast, January experiences much harsher conditions, with minimum temperatures plummeting to a frigid -27°C (-16°F) and a maximum of just 6°C (42°F), averaging around -8°C (18°F). Precipitation is lower in January at 42 mm (1.7 in) over 9 days, but the humidity level rises significantly to 92%. For more detailed insights on what to expect, visit Marquette weather in January.

September and February present stark contrasts in weather. In September, temperatures range from a chilly 2°C (35°F) at night to a warm average of 15°C (59°F) during the day, peaking at a high of 31°C (88°F). The month sees about 99 mm (3.9 in) of precipitation over 11 days, with a moderate humidity level of 74%. In contrast, February offers a much colder experience, with temperatures dipping down to a frigid -26°C (-14°F) and averaging -8°C (17°F), with a maximum of only 11°C (52°F). Precipitation is lower at 59 mm (2.3 in) across the same number of days, but the humidity is significantly higher at 92%. For more detailed weather insights during this chilly month, check out Marquette weather in February.

September and March present stark contrasts in weather patterns. In September, temperatures range from a minimum of 2°C (35°F) to a maximum of 31°C (88°F), with an average of 15°C (59°F), creating a warm backdrop for outdoor activities. The month experiences 99 mm (3.9 in) of precipitation over about 11 days, and the humidity sits at a comfortable 74%. In contrast, March is much colder, with temperatures plunging to a minimum of -23°C (-9°F) and peaking at 15°C (60°F), averaging -3°C (27°F). The month sees less precipitation, totaling 55 mm (2.2 in) over approximately 10 days, but the humidity notably rises to 88%, making the air feel even chillier. For more detailed information, check out Marquette weather in March.

In September, the weather in Marquette is generally warmer than in April, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 31°C (88°F). This month typically experiences 99 mm (3.9 in) of precipitation over 11 days, coupled with a humidity level of 74%. In contrast, April sees a much colder range, with temperatures dipping as low as -12°C (11°F) and peaking at 20°C (68°F). Despite slightly lower precipitation at 92 mm (3.6 in) over the same number of days, April's higher humidity at 86% contributes to a chillier atmosphere, making it feel quite different from the warmth of September. For more details on April weather specifics, you can explore Marquette weather in April.

In comparing the weather of September and May, September generally presents warmer conditions, with average temperatures reaching 15°C (59°F) and highs soaring up to 31°C (88°F), whereas May's temperatures start cooler with an average of 10°C (50°F) and a maximum of 28°C (82°F). Although September experiences more rainfall at 99 mm (3.9 in) over 11 days compared to May's 74 mm (2.9 in) over 10 days, both months exhibit relatively high humidity levels, with September at 74% and May slightly higher at 78%. For a closer look at May's weather specifics, you can refer to Marquette weather in May.

When comparing the weather in September and June, we find that both months feature similar temperature ranges, with September averaging 15°C (59°F) and June slightly warmer at 16°C (61°F). Max temperatures peak at 31°C (88°F) in September, closely followed by June’s maximum of 32°C (89°F). Both months experience relatively high humidity at 74% and similar levels of precipitation, with September receiving 99 mm (3.9 in) over 11 days and June slightly higher at 105 mm (4.1 in) over 12 days. For a more detailed look at June weather, you can visit Marquette weather in June.

In July, the weather is generally warmer, with average temperatures around 20°C (68°F) and a maximum reaching up to 33°C (92°F), while September sees a drop in temperatures, averaging 15°C (59°F) and peaking at 31°C (88°F). Both months experience significant humidity, with July at 70% and September slightly higher at 74%. Precipitation is fairly comparable; July receives 83 mm (3.3 in) over 10 days, whereas September has 99 mm (3.9 in) spread across 11 days. For a more detailed look at July in Marquette, visit Marquette weather in July.

In comparing the weather patterns of September and August, September tends to be cooler with a minimum temperature of 2°C (35°F) compared to August’s 5°C (41°F). Both months reach a maximum of 31°C (88°F), but September has a lower average temperature of 15°C (59°F) compared to August’s 18°C (65°F). While September experiences slightly less precipitation at 99 mm (3.9 in) over 11 days, August sees 108 mm (4.3 in) over 13 days, indicating a wetter month. Interestingly, humidity remains fairly constant, with September at 74% and August at 71%. For more detailed weather information, you can check Marquette weather in August.

September and October exhibit significant contrasts in weather conditions. In September, temperatures range from a low of 2°C (35°F) to a high of 31°C (88°F), with an average of 15°C (59°F). This month experiences a total precipitation of 99 mm (3.9 in) over approximately 11 days, alongside a humidity level of 74%. In contrast, October sees a drop in the average temperature to 8°C (46°F), with a minimum of -7°C (20°F) and a maximum of 25°C (78°F). Precipitation increases to 120 mm (4.7 in) over 14 days, resulting in a higher average humidity of 81%. These changes highlight a transition from the warmer, more humid conditions of September to the cooler, wetter climate of October, as detailed in this link: Marquette weather in October.

September and November present contrasting weather patterns. In September, temperatures range from a mild minimum of 2°C (35°F) to a warm maximum of 31°C (88°F), with an average of 15°C (59°F). This month experiences 99 mm (3.9 in) of precipitation over 11 days and a humidity level of 74%. In stark contrast, November sees much cooler temperatures, with a minimum of -13°C (9°F), an average of 0°C (32°F), and a maximum of 22°C (71°F). Although November receives less precipitation at 66 mm (2.6 in) over 13 days, it has a higher humidity of 86%. For more specific details about November's weather, visit Marquette weather in November.

September weather features a wide temperature range, with minimums around 2°C (35°F) and maximums reaching up to 31°C (88°F), resulting in an average of 15°C (59°F). In contrast, December experiences much colder conditions, with temperatures dropping to a minimum of -25°C (-12°F) and a maximum of 13°C (55°F), leading to an average of -4°C (24°F). While September sees significant rainfall totaling 99 mm (3.9 in) over 11 days, December has less precipitation at 62 mm (2.4 in), though it occurs over 12 days, contributing to the overall dampness and increased humidity, which is notably higher at 90%. For more detailed information about conditions during this time, you can check Marquette weather in December.

Compare Marquette's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Marquette

As September unfolds in Marquette, the weather transitions dramatically from the sweltering summer warmth to a more temperate climate. While the days can still flirt with maximum temperatures around 31°C (88°F), the cooler nights bring relief, with averages settling around 15°C (59°F) and dips that can reach as low as 2°C (35°F). This month also experiences notable precipitation, with almost half of its days seeing some rain, contributing to a humidity level of 74% that adds to the refreshing feel in the air. Compared to the hot and dry summer months, September offers a perfect blend of warmth and crispness, making it an ideal time to enjoy the beauty of Marquette. For more details, check out the comprehensive insights on Marquette Climate.