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September Weather in Seymour, United States

Last updated: June 24, 2025

In September, the average temperature in Seymour, United States is a pleasant 22°C (71°F). Expect a range of temperatures, with a minimum of 7°C (45°F) and a maximum of 34°C (94°F). During this month, precipitation averages 86 mm (3.4 in) over 8 days, contributing to the overall humidity, which sits around 69%.

September Temperature in Seymour

In September in Seymour, the average temperature is 22°C (71°F). Maximum temperatures can reach 34°C (94°F), while minimums can drop to as low as 7°C (45°F). This varied climate makes Seymour an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Seymour, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seymour, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec333745546674787671594339
Data source: Temperature data for Seymour 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 Seymour

In Seymour in September, the precipitation amount reaches 86 mm (3.4 in) over the course of 8 days.

September Precipitation Trends in Seymour

The chart displays monthly precipitation patterns in Seymour, 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 Seymour, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec8210913812113312610298869798100
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Seymour

In Seymour in September humidity is 69%. With an average temperature of 22°C (71°F), this humidity feels like walking through a warm embrace, making travel slightly uncomfortable yet refreshing, as the air clings to your skin and adds a layer of warmth to your exploration.

September Average Humidity in Seymour

This chart illustrates the average monthly humidity levels in Seymour, 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 Seymour is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%85%86%84%79%82%79%70%69%76%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Seymour

In Seymour 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 Seymour.

Maximum UV Index Levels in Seymour for September

The chart shows the monthly maximum UV Index (UVI) for Seymour 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 Seymour typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910111098643
Data source: Seymour 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 Seymour Compares to Other Months

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

This table compares monthly weather conditions in Seymour, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (33°F)82 mm (3.2 inches)87%moderate
February Weather3°C (37°F)109 mm (4.3 inches)85%moderate
March Weather7°C (46°F)138 mm (5.4 inches)86%high
April Weather12°C (55°F)121 mm (4.8 inches)84%very high
May Weather19°C (66°F)133 mm (5.2 inches)79%very high
June Weather24°C (75°F)126 mm (5.0 inches)82%extreme
July Weather26°C (78°F)102 mm (4.0 inches)79%very high
August Weather24°C (76°F)98 mm (3.9 inches)70%very high
September Weather22°C (71°F)86 mm (3.4 inches)69%very high
October Weather15°C (59°F)97 mm (3.8 inches)76%high
November Weather6°C (44°F)98 mm (3.9 inches)88%moderate
December Weather4°C (39°F)100 mm (3.9 inches)87%moderate

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