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September Weather in Ooltewah, United States

Last updated: June 24, 2025

In September, the average temperature in Ooltewah, United States hovers around 24°C (75°F), making it a pleasant time to visit. However, be prepared for temperature extremes, as the minimum can drop to 9°C (48°F) while the maximum can soar to 37°C (99°F). With an average humidity of 64%, you can expect a bit of stickiness in the air. Additionally, anticipate 100 mm (3.9 in) of rainfall over about 9 days, so don’t forget your umbrella!

September Temperature in Ooltewah

In September in Ooltewah, the average temperature is 24°C (75°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 9°C (48°F). This varied climate makes Ooltewah a great destination for travelers seeking both warm and cooler experiences.

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

The chart illustrates September temperature patterns in Ooltewah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ooltewah, September typically has an average temperature of 24°C (75°F), with highs reaching up to 37°C (99°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec434955617176807975655147
Data source: Temperature data for Ooltewah 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 Ooltewah

In Ooltewah in September, the precipitation amount is 100 mm (3.9 in) spread over 9 days.

September Precipitation Trends in Ooltewah

The chart displays monthly precipitation patterns in Ooltewah, 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 Ooltewah, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec961701581471021029912410012474135
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ooltewah

In Ooltewah in September humidity is 64%. With average temperature 24°C (75°F), this humidity feels like a warm blanket enveloping you, making outdoor exploration both refreshing and a little sticky, perfect for leisurely strolls and shaded cafes but with a need for frequent water breaks.

September Average Humidity in Ooltewah

This chart illustrates the average monthly humidity levels in Ooltewah, 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 Ooltewah is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ooltewah

In Ooltewah 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 Ooltewah.

Maximum UV Index Levels in Ooltewah for September

The chart shows the monthly maximum UV Index (UVI) for Ooltewah 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 Ooltewah typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Ooltewah 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 Ooltewah Compares to Other Months

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

This table compares monthly weather conditions in Ooltewah, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)96 mm (3.8 inches)87%moderate
February Weather9°C (49°F)170 mm (6.7 inches)87%high
March Weather13°C (55°F)158 mm (6.2 inches)85%very high
April Weather16°C (61°F)147 mm (5.8 inches)82%very high
May Weather22°C (71°F)102 mm (4.0 inches)83%extreme
June Weather25°C (76°F)102 mm (4.0 inches)82%extreme
July Weather27°C (80°F)99 mm (3.9 inches)78%extreme
August Weather26°C (79°F)124 mm (4.9 inches)67%very high
September Weather24°C (75°F)100 mm (3.9 inches)64%very high
October Weather18°C (65°F)124 mm (4.9 inches)74%high
November Weather10°C (51°F)74 mm (2.9 inches)87%moderate
December Weather8°C (47°F)135 mm (5.3 inches)88%moderate

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