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September Weather in Algonac, United States

Last updated: June 24, 2025

In September, the average temperature in Algonac, United States is a comfortable 19°C (67°F). Expect a minimum temperature of 8°C (46°F) and a maximum of 29°C (85°F), providing a pleasant range for outdoor activities. Precipitation averages around 75 mm (2.9 in) over 11 days, so don't forget your umbrella! With an average humidity of 80%, the air may feel a bit muggy, enhancing the cozy atmosphere of the season.

September Temperature in Algonac

In September in Algonac, the average temperature is 19°C (67°F). Maximums can reach 29°C (85°F), and minimums can be as low as 8°C (46°F). This mild weather makes Algonac an ideal destination for travelers seeking a comfortable climate.

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

The chart illustrates September temperature patterns in Algonac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Algonac, September typically has an average temperature of 19°C (67°F), with highs reaching up to 29°C (85°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec282936455769747367564134
Data source: Temperature data for Algonac 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 Algonac

In Algonac in September, the precipitation amount is 75 mm (2.9 in) over the course of 11 days.

September Precipitation Trends in Algonac

The chart displays monthly precipitation patterns in Algonac, 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 Algonac, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec828382109111918982751259875
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Algonac

In Algonac in September humidity is 80%. With an average temperature of 19°C (67°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor exploration a bit uncomfortable and sticky, yet it encourages you to seek out refreshing indoor activities or shaded spots to escape the heat.

September Average Humidity in Algonac

This chart illustrates the average monthly humidity levels in Algonac, 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 Algonac is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Algonac

In Algonac in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Algonac.

Maximum UV Index Levels in Algonac for September

The chart shows the monthly maximum UV Index (UVI) for Algonac 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 Algonac typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec25589101098642
Data source: Algonac 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 Algonac Compares to Other Months

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

This table compares monthly weather conditions in Algonac, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)82 mm (3.2 inches)88%low
February Weather-2°C (29°F)83 mm (3.2 inches)87%moderate
March Weather2°C (36°F)82 mm (3.2 inches)85%moderate
April Weather7°C (45°F)109 mm (4.3 inches)86%very high
May Weather14°C (57°F)111 mm (4.4 inches)80%very high
June Weather20°C (69°F)91 mm (3.6 inches)80%very high
July Weather24°C (75°F)89 mm (3.5 inches)80%very high
August Weather23°C (74°F)82 mm (3.2 inches)80%very high
September Weather19°C (67°F)75 mm (2.9 inches)80%very high
October Weather13°C (56°F)125 mm (4.9 inches)84%high
November Weather5°C (41°F)98 mm (3.8 inches)89%moderate
December Weather1°C (34°F)75 mm (3.0 inches)86%low

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