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September Weather in Cape Vincent, United States

Last updated: June 24, 2025

In Cape Vincent, United States, the average temperature in September hovers around 18°C (64°F), with minimums dipping to 4°C (40°F) and maximums soaring to 29°C (84°F). This month typically sees about 70 mm (2.8 in) of precipitation distributed over 9 days, accompanied by an average humidity level of 72%.

September Temperature in Cape Vincent

In September in Cape Vincent, the average temperature is 18°C (64°F). The maximum can reach 29°C (84°F), while the minimum can drop to as low as 4°C (40°F). This climate makes Cape Vincent an ideal destination for travelers seeking pleasant weather and a variety of outdoor activities.

September Weather in Cape Vincent: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cape Vincent, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cape Vincent, September typically has an average temperature of 18°C (64°F), with highs reaching up to 29°C (84°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec232431425464727164533930
Data source: Temperature data for Cape Vincent 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 Cape Vincent

In Cape Vincent in September, the total precipitation amount is 70 mm (2.8 in) spread over 9 days.

September Precipitation Trends in Cape Vincent

The chart displays monthly precipitation patterns in Cape Vincent, 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 Cape Vincent, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7978791269991126967015411497
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cape Vincent

In Cape Vincent in September, humidity is 72%. With an average temperature of 18°C (64°F), this humidity feels like a warm, sticky embrace, making travel somewhat uncomfortable as the air clings to your skin, leaving you longing for a refreshing breeze.

September Average Humidity in Cape Vincent

This chart illustrates the average monthly humidity levels in Cape Vincent, 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 Cape Vincent is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cape Vincent

In Cape Vincent in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Cape Vincent.

Maximum UV Index Levels in Cape Vincent for September

The chart shows the monthly maximum UV Index (UVI) for Cape Vincent 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 Cape Vincent typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Cape Vincent 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 Cape Vincent Compares to Other Months

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

This table compares monthly weather conditions in Cape Vincent, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (23°F)79 mm (3.1 inches)93%low
February Weather-4°C (25°F)78 mm (3.1 inches)93%moderate
March Weather0°C (31°F)79 mm (3.1 inches)86%moderate
April Weather6°C (43°F)126 mm (5.0 inches)82%very high
May Weather12°C (54°F)98 mm (3.9 inches)75%very high
June Weather18°C (64°F)91 mm (3.6 inches)68%very high
July Weather22°C (72°F)126 mm (5.0 inches)69%very high
August Weather22°C (71°F)96 mm (3.8 inches)67%very high
September Weather18°C (64°F)70 mm (2.8 inches)72%high
October Weather11°C (53°F)154 mm (6.0 inches)83%moderate
November Weather4°C (39°F)114 mm (4.5 inches)88%moderate
December Weather-1°C (30°F)97 mm (3.8 inches)89%low

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