September Weather in Saint Ignace, United States

Last updated: February 24, 2025

In Saint Ignace, United States, September showcases a delightful transition to fall, with temperatures ranging from a brisk 5°C (41°F) to a pleasant 29°C (85°F), yielding an average of 16°C (61°F). This month is characterized by a humidity level of 79%, creating a refreshing atmosphere amidst occasional rain. With 96 mm (3.8 in) of precipitation spread over 11 days, visitors can expect a mix of sunny, crisp days and cozy, drizzly afternoons. Whether you're exploring the vibrant landscapes or enjoying local festivities, September in Saint Ignace offers a charming canvas for autumn adventures.

September Temperature in Saint Ignace

As September arrives in Saint Ignace, temperatures start to showcase a comfortable transition from the summer heat to the crispness of fall. The minimum temperatures hover around 5°C (41°F), while daily highs can reach a pleasant 29°C (85°F), offering perfect weather for outdoor activities. With an average temperature of 16°C (61°F), this month’s climate makes it an ideal time for exploring the scenic beauty of the region. The warmth of late summer lingers, yet a hint of autumn’s chill begins to creep in, signaling a shift. As daylight hours gradually shorten, residents and visitors alike can enjoy the perfect blend of warmth and cool breezes, making September a delightful month to experience the natural charm of Saint Ignace.

September Weather in Saint Ignace: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint Ignace, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec222129385061686861503628
Data source: Temperature data for Saint Ignace 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 Saint Ignace

In September, Saint Ignace experiences a notable uptick in precipitation, with 96 mm (3.8 in) recorded over 11 days. This gradual increase in rainfall marks the transition into autumn, following a relatively dry and warm summer. August's average of 95 mm sets the stage for September's slightly higher totals, reflecting the seasonal shift. The frequency of rainy days also increases slightly, indicating a return to wetter weather patterns as the days shorten. As October approaches, the trend continues, with even more substantial precipitation on the horizon, culminating in October’s average of 138 mm across 17 days. This progression not only highlights the region's seasonal changes but also prepares the landscape for the vibrant colors and cooler temperatures of fall.

September Precipitation Trends in Saint Ignace

The chart displays monthly precipitation patterns in Saint Ignace, 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.
JanFebMarAprMayJunJulAugSepOctNovDec50645794891008695971387477
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint Ignace

In Saint Ignace, September greets residents with a humidity level of 79%, marking a slight increase from the summer months, which maintain a steady 75%. This uptick signals the transition from the warm, dry days of summer to the cooler onset of autumn. While September's humidity begins to approach the more humid conditions of earlier months, like January and February, it remains comfortably lower than in the heart of winter. As the year progresses, humidity levels typically rise again in October, indicating a cyclical pattern that reflects the region's shifting seasons. Overall, September offers a pleasant balance, echoing the tail end of summer while gently preparing for the fall.

September Average Humidity in Saint Ignace

This chart illustrates the average monthly humidity levels in Saint Ignace, 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%91%87%86%79%75%75%75%79%85%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint Ignace

As September arrives in Saint Ignace, the UV Index trends reflect a gradual decline from the peak summer rays. With a UV Index of 7 and a high exposure category, residents and visitors must take precautions, as the recommended burn time stands at 25 minutes. This marks a transition from the very high levels seen in the summer months, particularly July and August, which reached an Index of 9. Overall, September offers a significant reduction in UV intensity, yet awareness remains essential for safe sun exposure. For tailored information on UV levels and safety measures, check out Saint Ignace UV Index.

Maximum UV Index Levels in Saint Ignace for September

The chart shows the monthly maximum UV Index (UVI) for Saint Ignace 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.
JanFebMarAprMayJunJulAugSepOctNovDec245799987532
Data source: Saint Ignace 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 Saint Ignace

As summer fades into autumn, September in Saint Ignace offers a delightful balance of sunshine, with 275 hours illuminating the transition from the vibrant days of summer to the more subdued tones of fall. Following the peak sunshine of July with its impressive 360 hours, September retains a warm glow, outshining both the bracing winter months and the early fall, like March and November, which see less than half the sun exposure. This gentle decline in hours is a sign of nature’s shift, preparing residents and visitors alike for the scenic beauty of autumn leaves and the tranquil charm of the approaching cooler season. Whether enjoying the milder temperatures or basking in the sun’s soft rays, September remains a cherished time for outdoor adventures and scenic views in this charming lakeside town.

Monthly Sunshine Duration in Saint Ignace: September Highlighted

The September sunshine duration represents the total number of hours Saint Ignace 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.
JanFebMarAprMayJunJulAugSepOctNovDec87h136h228h239h304h331h360h332h275h192h121h99h
Data source: Saint Ignace September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Saint Ignace During September

In Saint Ignace, the likelihood of sunny weather takes a notable upturn as summer fades into early autumn. September boasts a 51% chance of sunshine, marking it as one of the sunniest months of the year, just slightly ahead of July and August. This transition period reflects the gradual shift in weather patterns, where the lingering warmth of summer often coexists with the crispness of fall. As days slowly shorten, residents and visitors alike can still enjoy a pleasant mix of sunshine, making it an ideal time for outdoor activities before the chill of October sets in.

Percentage of Sunny Days in September in Saint Ignace

The chart illustrates the percentage of sunny days in Saint Ignace 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 Saint Ignace experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec13%19%39%34%49%45%55%50%51%34%30%16%
Data source: Saint Ignace September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Saint Ignace in September

As summer fades in Saint Ignace, September marks a subtle transition with 12 hours of daylight, a gentle decline from the peak of 15 hours in June and July. This month gracefully bridges the vibrant long days of summer and the shorter daylight hours of fall. With a relatively balanced light ratio, September offers a cozy ambiance, inviting residents and visitors alike to savor outdoor activities under the softening sun. Following this slight dip, the days will continue to shorten, promising the crispness of autumn just around the corner, but for now, the lingering warmth of summer still holds sway in the charming northern Michigan landscape.

Average Daylight Hours in Saint Ignace for September

The chart illustrates the variation in daylight duration in Saint Ignace throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 7m10h 22m11h 57m13h 34m14h 57m15h 38m15h 15m14h 1m12h 28m10h 52m9h 27m8h 43m
Data source: Saint Ignace daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Saint Ignace

As summer fades into autumn, September in Saint Ignace showcases a gentle rise in wind speed, averaging 4.3 m/s (10 mph). This marks a noticeable shift from the calmer winds of July and August, which hover around 3.4 m/s and 3.7 m/s, respectively. While the September breeze may not rival the gusty months of November or December, it brings a refreshing change that hints at the vibrant colors and cooler temperatures ahead. The transition into fall is evident as the winds pick up slightly after a lull, setting the stage for the dynamic weather patterns characteristic of the approaching season. Overall, September's winds provide a delightful prelude to the brisk, invigorating days that lie in wait.

Average September Wind Speed in Saint Ignace

The chart displays monthly wind speed patterns in Saint Ignace, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.75.24.74.14.03.43.74.3 m/s4.05.25.8
Data source: Saint Ignace September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Saint Ignace Compares to Other Months

The weather in Saint Ignace 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 Saint Ignace and find detailed weather information for every month.

In September, the weather is generally mild with average temperatures around 16°C (61°F) and daytime highs reaching up to 29°C (85°F), making it a pleasant time for outdoor activities. However, this month also experiences a fair amount of rain, with around 96 mm (3.8 in) of precipitation over approximately 11 days and humidity levels at 79%.

In stark contrast, January brings much colder conditions, with average temperatures plummeting to -5°C (22°F) and lows often dipping to -23°C (-9°F). This winter month sees less precipitation at 50 mm (2.0 in), but it comes over about 12 days, and humidity levels rise to 92%. For a more detailed look at the winter climate, you can check Saint Ignace weather in January.

Comparing the weather of September and February reveals significant differences in temperature and overall climate conditions. In September, temperatures range from a cool 5°C (41°F) at night to a warm 29°C (85°F) during the day, with an average temperature of 16°C (61°F). The month experiences moderate rainfall, with 96 mm (3.8 in) of precipitation over about 11 days and a humidity level of 79%. In stark contrast, February presents a much colder scenario, with temperatures plummeting to a minimum of -20°C (-4°F) and peaking at a maximum of only 8°C (47°F), averaging -6°C (22°F). Despite lower precipitation at 64 mm (2.5 in) over 13 days, February's high humidity of 91% contributes to a biting chill. For more detailed information, you can visit Saint Ignace weather in February.

When comparing the weather in September and March, notable differences emerge. September enjoys milder temperatures, with a minimum of 5°C (41°F) and an average of 16°C (61°F), peaking at a warm 29°C (85°F). In contrast, March experiences much colder conditions, starting at a minimum of -18°C (0°F) and averaging -2°C (29°F) despite reaching a maximum of 16°C (61°F). Precipitation in September is higher at 96 mm (3.8 in) over 11 days, compared to March's 57 mm (2.3 in) spread over just 9 days. Humidity levels are also higher in March at 87%, compared to 79% in September. For a closer look at March weather specifics, take a look at Saint Ignace weather in March.

When comparing the weather in September and April, significant differences emerge. September typically offers a milder climate, with temperatures ranging from a minimum of 5°C (41°F) to a maximum of 29°C (85°F), resulting in an average of 16°C (61°F). In contrast, April experiences colder temperatures, with a minimum of -9°C (16°F) and an average of just 3°C (38°F). Both months have similar levels of precipitation, with September receiving 96 mm (3.8 in) over 11 days and April slightly less at 94 mm (3.7 in) over 13 days. Additionally, April tends to be slightly more humid, averaging around 85% compared to September's 79%. For more details on April weather, you can check Saint Ignace weather in April.

When comparing the weather in September and May, one can observe notable differences in temperature and precipitation levels. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 29°C (85°F), showcasing a warmer average of 16°C (61°F). Conversely, May experiences cooler conditions, with temperatures dipping to a minimum of -2°C (28°F) and peaking at 27°C (80°F), resulting in a lower average of 10°C (50°F). Precipitation is relatively similar, with September receiving 96 mm (3.8 in) over 11 days, while May has slightly less at 89 mm (3.5 in) over 10 days. Both months share a humidity level of 79%, but the overall warmth in September makes it feel quite distinct. For more specific insights, visit Saint Ignace weather in May.

In comparing the weather of June and September, both months feature similar average temperatures, hovering around 16°C (61°F), but their maximum temperatures show slight variation, with June reaching up to 30°C (86°F) and September peaking at 29°C (85°F). Precipitation levels are almost equal, with June receiving 100 mm (4.0 in) over 10 days and September accumulating 96 mm (3.8 in) over 11 days. Notably, September experiences a slightly higher humidity level at 79%, compared to June's 75%. For more detailed information, you can check Saint Ignace weather in June.

In comparing the weather of September and July, September tends to have cooler temperatures with a minimum of 5°C (41°F) and an average of 16°C (61°F), while July features warmer conditions, starting at a minimum of 10°C (50°F) and an average of 20°C (69°F). The maximum temperatures in July can reach up to 31°C (88°F), compared to September's peak of 29°C (85°F). Precipitation levels are slightly higher in September, with 96 mm (3.8 in) over 11 days, contrasted with July's 86 mm (3.4 in) across 9 days. Additionally, September experiences higher humidity at 79%, while July holds a moderate level of 75%. For detailed information, you can check the Saint Ignace weather in July.

September weather shows a notable shift from August, with cooler temperatures overall. The minimum temperature in September drops to 5°C (41°F) compared to August's 8°C (48°F), while the average temperature also cools to 16°C (61°F) from 20°C (68°F) in August. Although September sees a similar amount of precipitation, totaling 96 mm (3.8 in) over 11 days, it is slightly higher than August's 95 mm (3.7 in) across 9 days. Additionally, September experiences increased humidity at 79%, while August maintains a lower level at 75%. For more specific insights, you can check Saint Ignace weather in August.

September typically showcases a wider temperature range, with minimums around 5°C (41°F) and maximums reaching 29°C (85°F), while averaging around 16°C (61°F). The month experiences moderate precipitation of 96 mm (3.8 in) over 11 days, accompanied by a humidity level of 79%. In contrast, October brings cooler conditions, with minimum temperatures dropping to -3°C (26°F) and an average of 10°C (50°F). Although the maximum temperature is more subdued at 24°C (76°F), October sees an increase in precipitation to 138 mm (5.4 in) over 17 days, along with a slight rise in humidity to 85%. For more details on the changing weather patterns, you can check Saint Ignace weather in October.

In September, weather in Saint Ignace is generally mild, with temperatures ranging from a cool 5°C (41°F) to a warm 29°C (85°F) and an average of 16°C (61°F). The month sees a fair amount of precipitation, with 96 mm (3.8 in) falling over 11 days, and humidity levels around 79%. In contrast, November brings a stark shift in climate, featuring much colder temperatures, with lows reaching -12°C (11°F) and an average of only 2°C (37°F). While November has slightly less precipitation at 74 mm (2.9 in) over 14 days, humidity is higher at 88%. For more detailed information, you can check Saint Ignace weather in November.

September and December present stark contrasts in weather. September boasts warmer temperatures with a minimum of 5°C (41°F) and an average of 16°C (61°F), reaching a maximum of 29°C (85°F). The month experiences a moderate amount of precipitation at 96 mm (3.8 in) over 11 days, coupled with a humidity level of 79%. In contrast, December ushers in a much colder climate, with temperatures dipping as low as -19°C (-1°F) and averaging -2°C (29°F), and a maximum of 13°C (56°F). Precipitation is slightly lower at 77 mm (3.0 in), but it occurs over more days—15 in total—resulting in a higher humidity level of 89%. For more detailed information, you can check Saint Ignace weather in December.

Compare Saint Ignace's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Saint Ignace

As summer transitions into autumn, September in Saint Ignace beckons with cooler temperatures and a refreshing atmosphere. The warmest days may linger, yet the average temperature dips, making it a pleasant time for outdoor activities. This month also brings an uptick in precipitation, with rain gracing the area on several days, contributing to the lush greenery that characterizes this beautiful region. Humidity remains relatively high, reminding us of the summer's warmth while heralding the crispness of fall. For a deeper dive into the evolving weather patterns, check out Saint Ignace Climate.