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September Weather in Sidell, United States

Last updated: June 24, 2025

In September, the average temperature in Sidell, United States is a pleasant 21°C (71°F). However, temperatures can fluctuate, with a minimum of 6°C (43°F) and a maximum reaching up to 34°C (94°F). Expect about 74 mm (2.9 in) of precipitation spread over 7 days, accompanied by an average humidity level of 79%. 🌦️

September Temperature in Sidell

In September in Sidell, the average temperature is 21°C (71°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 6°C (43°F). This diverse temperature range makes it a great destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Sidell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sidell, September typically has an average temperature of 21°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec293243526575777570574236
Data source: Temperature data for Sidell 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 Sidell

In Sidell in September, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.

September Precipitation Trends in Sidell

The chart displays monthly precipitation patterns in Sidell, 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 Sidell, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec797911211414310592106741207961
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sidell

In Sidell in September humidity is 79%. With an average temperature of 21°C (71°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel laborious and exhausting. Travelers should be prepared to hydrate frequently and take breaks in shaded areas to fully enjoy their time exploring.

September Average Humidity in Sidell

This chart illustrates the average monthly humidity levels in Sidell, 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 Sidell is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%82%84%83%80%83%82%83%79%79%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sidell

In Sidell 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 Sidell.

Maximum UV Index Levels in Sidell for September

The chart shows the monthly maximum UV Index (UVI) for Sidell 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 Sidell typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Sidell 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 Sidell Compares to Other Months

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

This table compares monthly weather conditions in Sidell, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)79 mm (3.1 inches)84%moderate
February Weather0°C (32°F)79 mm (3.1 inches)82%moderate
March Weather6°C (43°F)112 mm (4.4 inches)84%high
April Weather11°C (53°F)114 mm (4.5 inches)83%very high
May Weather18°C (65°F)143 mm (5.6 inches)80%very high
June Weather24°C (75°F)105 mm (4.1 inches)83%extreme
July Weather25°C (78°F)92 mm (3.6 inches)82%very high
August Weather24°C (75°F)106 mm (4.2 inches)82%very high
September Weather21°C (71°F)74 mm (2.9 inches)79%very high
October Weather14°C (58°F)120 mm (4.7 inches)79%high
November Weather5°C (42°F)79 mm (3.1 inches)88%moderate
December Weather2°C (36°F)61 mm (2.4 inches)87%moderate

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