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October Weather in Chattanooga Valley, United States

Last updated: June 24, 2025

In Chattanooga Valley, United States, the average temperature in October is a comfortable 18°C (65°F). However, be prepared for a wide range, as temperatures can dip as low as -2°C (29°F) and soar to a scorching 37°C (99°F). Expect about 133 mm (5.2 in) of precipitation over 10 days, with an average humidity level of 74%, ensuring a moist yet refreshing atmosphere.

October Temperature in Chattanooga Valley

In October in Chattanooga Valley, the average temperature is 18°C (65°F), with maxima reaching 37°C (99°F) and minima dropping as low as -2°C (29°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack accordingly for both warm days and cooler evenings.

October Weather in Chattanooga Valley: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Chattanooga Valley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chattanooga Valley, October typically has an average temperature of 18°C (65°F), with highs reaching up to 37°C (99°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec434854607076797874645046
Data source: Temperature data for Chattanooga Valley 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.

October Precipitation in Chattanooga Valley

In Chattanooga Valley in October, the total precipitation amount is 133 mm (5.2 in) spread over a period of 10 days.

October Precipitation Trends in Chattanooga Valley

The chart displays monthly precipitation patterns in Chattanooga Valley, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Chattanooga Valley, October typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec991711691569612010612110613372139
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Chattanooga Valley

In Chattanooga Valley in October humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

October Average Humidity in Chattanooga Valley

This chart illustrates the average monthly humidity levels in Chattanooga Valley, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Chattanooga Valley is approximately 74%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Chattanooga Valley

In Chattanooga Valley in October, 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 Chattanooga Valley.

Maximum UV Index Levels in Chattanooga Valley for October

The chart shows the monthly maximum UV Index (UVI) for Chattanooga Valley in October, 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 October, the maximum UV index in Chattanooga Valley typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Chattanooga Valley October 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 October Weather in Chattanooga Valley Compares to Other Months

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

This table compares monthly weather conditions in Chattanooga Valley, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)99 mm (3.9 inches)87%moderate
February Weather9°C (48°F)171 mm (6.7 inches)87%high
March Weather12°C (54°F)169 mm (6.7 inches)85%very high
April Weather16°C (60°F)156 mm (6.2 inches)82%very high
May Weather21°C (70°F)96 mm (3.8 inches)83%extreme
June Weather24°C (76°F)120 mm (4.7 inches)82%extreme
July Weather26°C (80°F)106 mm (4.2 inches)78%extreme
August Weather26°C (78°F)121 mm (4.8 inches)67%very high
September Weather24°C (75°F)106 mm (4.2 inches)64%very high
October Weather18°C (65°F)133 mm (5.2 inches)74%high
November Weather10°C (50°F)72 mm (2.8 inches)87%moderate
December Weather8°C (46°F)139 mm (5.5 inches)88%moderate

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