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September Weather in Sedan, United States

Last updated: June 24, 2025

In September, the average temperature in Sedan, United States hovers around 23°C (74°F). Expect a range with a minimum dropping to 5°C (42°F) and a maximum soaring to 36°C (97°F). With precipitation of 84 mm (3.3 in) over about 7 days, you can anticipate some rainfall, while the average humidity sits at a comfortable 67%.

September Temperature in Sedan

In September in Sedan, the average temperature is 23°C (74°F). Maximums can reach 36°C (97°F), and minimums can be as low as 5°C (42°F). Be prepared for warm days and cool nights while exploring this vibrant destination.

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

The chart illustrates September temperature patterns in Sedan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sedan, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec353750576778817874594741
Data source: Temperature data for Sedan 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 Sedan

In Sedan in September, the total precipitation amount is 84 mm (3.3 in) distributed over a span of 7 days.

September Precipitation Trends in Sedan

The chart displays monthly precipitation patterns in Sedan, 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 Sedan, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec5648991012151028791841413232
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sedan

In Sedan in September humidity is 67%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making outdoor exploration pleasant yet slightly sticky, perfect for leisurely strolls but requiring occasional breaks for hydration.

September Average Humidity in Sedan

This chart illustrates the average monthly humidity levels in Sedan, 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 Sedan is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%76%71%74%83%83%81%73%67%72%82%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sedan

In Sedan in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Sedan.

Maximum UV Index Levels in Sedan for September

The chart shows the monthly maximum UV Index (UVI) for Sedan 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 Sedan typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec36710101111109753
Data source: Sedan 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 Sedan Compares to Other Months

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

This table compares monthly weather conditions in Sedan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)56 mm (2.2 inches)77%moderate
February Weather3°C (37°F)48 mm (1.9 inches)76%high
March Weather10°C (50°F)99 mm (3.9 inches)71%high
April Weather14°C (57°F)101 mm (4.0 inches)73%very high
May Weather20°C (67°F)215 mm (8.5 inches)83%very high
June Weather25°C (78°F)102 mm (4.0 inches)83%extreme
July Weather27°C (81°F)87 mm (3.4 inches)81%extreme
August Weather26°C (79°F)91 mm (3.6 inches)73%very high
September Weather23°C (74°F)84 mm (3.3 inches)67%very high
October Weather15°C (59°F)141 mm (5.5 inches)72%high
November Weather8°C (47°F)32 mm (1.2 inches)82%moderate
December Weather5°C (41°F)32 mm (1.2 inches)85%moderate

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