September Weather in Sandusky, United States

Last updated: February 24, 2025

Experience the vibrant September weather in Sandusky, United States, where temperatures dance between 10°C (50°F) and a sizzling 31°C (88°F), averaging a pleasant 20°C (69°F). This month brings a typical humidity level of 78%, creating a lush atmosphere perfect for outdoor activities. While you may encounter precipitation on 9 days with an accumulation of 70 mm (2.8 in), the fluctuating weather offers an ideal blend of sunshine and refreshing rain. Enjoy the transition into fall with Sandusky's dynamic climate and a myriad of experiences waiting to be discovered!

September Temperature in Sandusky

September in Sandusky, United States, marks a delightful transition from the sweltering summer months to the more temperate fall season. With a minimum temperature of around 10°C (50°F) and a pleasant average of 20°C (69°F), residents can enjoy comfortable outdoor activities. The maximum temperatures peak at 31°C (88°F), providing a few last tastes of summer warmth. This month typically showcases a gradual decline in daily highs compared to the preceding months of July and August, where temperatures frequently soar into the low 30s. As September progresses, the weather becomes increasingly crisp, hinting at the upcoming autumn foliage and cooler days, offering a refreshing change for those looking to embrace the seasonal shift.

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

The chart illustrates September temperature patterns in Sandusky, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec303138486070767468584235
Data source: Temperature data for Sandusky generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Sandusky

In September, Sandusky experiences a notable shift in precipitation, with total rainfall measuring 70 mm (2.8 in), making it one of the drier months of the year. This month typically sees only 9 days of rain, contrasting sharply with the heavier, more frequent downpours of the preceding summer months. As the transition into fall unfolds, September's rainfall pattern marks a decrease from the peak of July and May, showcasing a gradual decline in precipitation. This decrease not only signifies the waning warmth of summer but also sets the stage for autumn's arrival, where rainfall picks up again in October. Overall, September’s moderate precipitation and reduced rainy days highlight a brief interlude before the wetter months resume.

September Precipitation Trends in Sandusky

The chart displays monthly precipitation patterns in Sandusky, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7683881061241081218270999872
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Sandusky

In September, Sandusky, United States, experiences a notable shift as humidity levels settle at 78%, aligning with the summer's gradual retreat. This decrease indicates a transition from the more humid months of June through August, where levels hovered around the low 80s. Interestingly, this drop marks a significant departure from the winter months, like January and February, where humidity levels lingered between 87% and 88%. As autumn approaches, September's humidity suggests a balance between the lingering warmth of summer and the cooler air that October will bring, creating a comfortable atmosphere ideal for enjoying the changing seasons.

September Average Humidity in Sandusky

This chart illustrates the average monthly humidity levels in Sandusky, 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.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%87%88%81%82%81%78%78%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sandusky

As September rolls into Sandusky, the UV Index remains at a very high level of 8, signaling a need for sun safety. This marks a slight decline from the peak summer months, where it reached a consistent 10, but it's still crucial to be cautious with a burn time of just 15 minutes. Since May, there's been a notable trend of elevated UV exposure, peaking during the summer, with September continuing to reflect significant sunshine. As we transition into fall, the UV Index will gradually decrease, but for now, enjoy the beautiful weather while safeguarding your skin. For more details, check out Sandusky UV Index.

Maximum UV Index Levels in Sandusky for September

The chart shows the monthly maximum UV Index (UVI) for Sandusky 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.
JanFebMarAprMayJunJulAugSepOctNovDec346810101098642
Data source: Sandusky 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 Sandusky

As summer fades into autumn, September in Sandusky continues to bask in the warm glow of sunshine, providing a generous 295 hours of light—a delightful balance following the peak of July and August. This month holds onto the vibrant rays of summer while gently welcoming the cooler breezes of fall, making it a perfect time for outdoor activities. Interestingly, the sunny hours begin to taper off as the year progresses, dropping to 249 hours in April and witnessing a gradual decline until the dreariness of winter sets in by November. However, compared to earlier months, September's sunshine remains substantial, offering an idyllic backdrop for exploring the picturesque landscapes that Sandusky is renowned for, before the inevitable arrival of shorter, cloudier days.

Monthly Sunshine Duration in Sandusky: September Highlighted

The September sunshine duration represents the total number of hours Sandusky 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.
JanFebMarAprMayJunJulAugSepOctNovDec112h167h244h249h296h341h363h335h295h235h181h149h
Data source: Sandusky September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sandusky During September

As September rolls into Sandusky, a notable shift towards sunnier skies becomes evident, with the chance of sunshine peaking at 55%—the highest figure of the year. This positive trend marks a significant improvement from the earlier months, where the likelihood of sun fluctuated between 18% in January and 39% in both April and June. After a warm summer, September welcomes a touch of autumn while still retaining an inviting warmth, making it an ideal time for outdoor activities under a bright sun. With only October showing a decrease back to 33%, September stands out as a golden opportunity for enjoying the outdoors before the chill of winter sets in.

Percentage of Sunny Days in September in Sandusky

The chart illustrates the percentage of sunny days in Sandusky 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 Sandusky experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec18%24%49%39%37%39%46%48%55%33%43%25%
Data source: Sandusky September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sandusky in September

As September unfolds in Sandusky, the days begin to shorten, offering 12 hours of daylight—a gentle decline from the sun-drenched heights of summer. This transition marks a shift from the 15 hours in June and 14 hours in July, inviting a cozy ambiance as autumn approaches. While the daylight hours are still generous compared to the winter months ahead, dropping to 11 hours in October and lingering at 9 hours through November and December, September acts as a poignant reminder of the fleeting warmth before the chill sets in. Each month paints a vivid picture of seasonal change, as daylight wanes gracefully, gradually preparing the beautiful Michigan coastline for its serene fall.

Average Daylight Hours in Sandusky for September

The chart illustrates the variation in daylight duration in Sandusky throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 33m10h 37m11h 58m13h 21m14h 31m15h 6m14h 47m13h 44m12h 25m11h 2m9h 50m9h 13m
Data source: Sandusky daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Sandusky

As September rolls into Sandusky, the average wind speed experiences a refreshing uptick, reaching 4.8 m/s (11 mph), a pleasant contrast to the gentler breezes of summer. After a steady decline from May's 4.1 m/s down to a serene 3.3 m/s in August, this month's winds reflect the transitional nature of early autumn, hinting at the approaching seasonal changes. Interestingly, September's wind speed is notably higher than the low of 3.3 m/s seen in August, and it prepares the way for October's return to 4.6 m/s. This subtle rise not only invigorates the air but also signals the shift towards a brisker climate ahead, embodying the whimsical charm of early fall in the Great Lakes region.

Average September Wind Speed in Sandusky

The chart displays monthly wind speed patterns in Sandusky, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.55.45.24.64.14.23.83.34.8 m/s4.65.45.1
Data source: Sandusky September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Sandusky Compares to Other Months

The weather in Sandusky 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 Sandusky and find detailed weather information for every month.

September and January present stark contrasts in weather. In September, temperatures range from a mild 10°C (50°F) at night to a warm 31°C (88°F) during the day, fostering a pleasant atmosphere for outdoor activities. With an average temperature of 20°C (69°F) and relatively moderate humidity at 78%, September typically experiences 70 mm of rainfall over about nine days.

In contrast, January plunges into much colder conditions, where temperatures can drop to a frigid -21°C (-6°F) at night, with daytime highs reaching only 15°C (59°F). The average temperature sits at a chilling -1°C (30°F), and despite slightly higher precipitation at 76 mm over ten days, the biting humidity of 88% intensifies the cold. For more details on January conditions, you can check Sandusky weather in January.

September and February present starkly contrasting weather patterns. September features a mild climate with average temperatures around 20°C (69°F), peaking at a comfortable 31°C (88°F), while February grapples with chilling cold, where average temperatures drop to -1°C (31°F) and can plummet as low as -21°C (-6°F). Both months see significant precipitation, with September receiving 70 mm (2.8 in) over about 9 days and February slightly higher at 83 mm (3.3 in) across 13 days. Additionally, humidity levels are higher in February at 87%, compared to September’s 78%, contributing to a crisp atmosphere. For more detailed insights into February weather, you can explore Sandusky weather in February.

In September, temperatures are generally mild to warm, with a minimum of 10°C (50°F) and an average of 20°C (69°F), peaking at 31°C (88°F). The month experiences about 70 mm (2.8 in) of precipitation over 9 days, with humidity levels around 78%. In contrast, March brings a much chillier climate, with temperatures dipping as low as -12°C (11°F), averaging only 3°C (39°F), and reaching a maximum of 18°C (66°F). This month sees increased precipitation at 87 mm (3.4 in) spread over 12 days, alongside slightly higher humidity at 87%. For more specific insights on this month, check out Sandusky weather in March.

In September, the weather tends to be warmer, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), and an average of 20°C (69°F). This month typically experiences 70 mm (2.8 in) of precipitation across about 9 days, alongside a humidity level of 78%. Conversely, April starts off quite chilly, with temperatures dipping as low as -2°C (28°F) and only reaching a maximum of 24°C (76°F), giving an average temperature of 9°C (48°F). April is wetter, with 106 mm (4.2 in) of rain over approximately 14 days and a higher humidity level of 87%. For more details on the specific conditions in April, you can refer to the following link: Sandusky weather in April.

When comparing the weather in September and May, notable differences emerge. September typically experiences milder conditions with an average temperature of 20°C (69°F), ranging from a minimum of 10°C (50°F) to a maximum of 31°C (88°F). Precipitation is relatively low at 70 mm (2.8 in) over about 9 days, with humidity sitting around 78%. In contrast, May has cooler temperatures, averaging 16°C (60°F), with a minimum of 1°C (35°F) and a maximum of 29°C (84°F). This month sees increased rainfall, totaling 124 mm (4.9 in) across about 14 days, resulting in slightly higher humidity levels of 81%. For more detailed insights, check out Sandusky weather in May.

When comparing the weather in September and June, we notice some key differences. September enjoys slightly warmer evenings with a minimum temperature of 10°C (50°F) compared to June's minimum of 11°C (52°F). The average temperatures remain similar, with September averaging 20°C (69°F) and June at 21°C (71°F). However, June tends to be wetter, with 108 mm (4.3 in) of precipitation over 12 days, while September experiences less rainfall at 70 mm (2.8 in) over 9 days. Additionally, humidity levels are marginally higher in June at 82% compared to September's 78%. For more specific details, you can check Sandusky weather in June.

In comparing the weather of September and July, notable differences emerge. September features a wider temperature range, with minimums dipping to 10°C (50°F) and maximums reaching 31°C (88°F), while average temperatures sit at a comfortable 20°C (69°F). In contrast, July experiences warmer nights with minimum temperatures around 17°C (64°F) and maximums peaking at 32°C (91°F), though the average is slightly higher at 24°C (76°F). Additionally, September tends to be wetter with 70 mm (2.8 in) of precipitation over 9 days, compared to July's 121 mm (4.8 in) over 13 days. Humidity remains relatively high in both months, with September at 78% and July at 81%. For more insights, check out Sandusky weather in July.

In comparing the weather of September and August, September tends to be slightly cooler, with average temperatures ranging from 10°C (50°F) to a maximum of 31°C (88°F), while August maintains a warmer range of 16°C (61°F) to 31°C (89°F). Precipitation is also a factor, as September experiences 70 mm (2.8 in) over 9 rainy days, whereas August has a bit more rain with 82 mm (3.2 in) over 13 days. Humidity remains consistent for both months at 78%, contributing to the muggy weather typical of late summer. For more detailed information, you can check Sandusky weather in August.

September typically boasts milder temperatures, with an average of 20°C (69°F) and highs reaching up to 31°C (88°F), while October sees a significant drop, averaging only 14°C (58°F) with a maximum of 28°C (83°F). In September, the weather is relatively drier, with around 70 mm (2.8 in) of precipitation over roughly 9 days, whereas October experiences increased rainfall, totaling 99 mm (3.9 in) over about 15 days. Additionally, humidity rises slightly, making October feel a bit more damp at 82% compared to September's 78%. For more specifics about October weather, check out Sandusky weather in October.

In September, the weather is generally warm with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 31°C (88°F), averaging around 20°C (69°F). There is moderate rainfall, with precipitation totaling 70 mm (2.8 in) over 9 days and humidity levels at 78%. In contrast, November brings a significant drop in temperature, with lows reaching -8°C (18°F) and an average of only 6°C (42°F), despite a maximum of 21°C (70°F). The month experiences increased precipitation of 98 mm (3.9 in) over 11 days, accompanied by higher humidity at 89%. For more detailed information on November weather patterns, check Sandusky weather in November.

September and December present stark contrasts in weather. In September, temperatures range from a mild 10°C (50°F) at night to a warm average of 20°C (69°F), peaking at a high of 31°C (88°F) during the day. The month sees a total precipitation of 70 mm (2.8 in) spread over nine days, accompanied by a humidity level of 78%. In contrast, December brings much colder conditions, with temperatures dropping to a minimum of -16°C (4°F) and an average of just 2°C (35°F), while the daily maximum reaches a relatively mild 15°C (59°F). Precipitation in December remains similar at 72 mm (2.8 in), but it occurs over 12 days, and humidity rises to 86%. For more details on December weather, check out the link: Sandusky weather in December.

Compare Sandusky's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Sandusky

As summer begins to wane, September in Sandusky offers a refreshing transition with its mild temperatures and increased humidity. While the maximum daytime highs can still reach pleasantly warm levels, the nights take on a cooler charm, providing a comfortable escape from the sweltering heat of July and August. The month sees an average of nine days of precipitation, hinting at the autumnal shift while contributing to the lush scenery. Unlike the previous months, where humidity can feel stifling, September tends to balance warmth and freshness, making it a delightful time to experience the beauty of Sandusky. For those interested in further exploring the area's climate, be sure to check out Sandusky Climate.