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August Weather in Chattanooga Valley, United States

Last updated: June 24, 2025

In August, the average temperature in Chattanooga Valley, United States hovers around 26°C (78°F). You can expect a minimum of 15°C (60°F) and rise up to a maximum of 35°C (96°F). Rainfall is likely, with an average precipitation of 121 mm (4.8 in) spread over 14 days. Additionally, the atmosphere carries an average humidity of 67%, enhancing the warm, tropical vibe.

August Temperature in Chattanooga Valley

In August in Chattanooga Valley, the average temperature is 26°C (78°F). Maximums can reach 35°C (96°F), while minimums can drop as low as 15°C (60°F). This diverse temperature range makes Chattanooga Valley an ideal destination for travelers seeking a balance of warmth and cooler evenings.

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

The chart illustrates August 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, August typically has an average temperature of 26°C (78°F), with highs reaching up to 35°C (96°F) and lows dropping to around 15°C (60°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.

August Precipitation in Chattanooga Valley

In Chattanooga Valley in August, the precipitation amount is 121 mm (4.8 in) over a span of 14 days.

August Precipitation Trends in Chattanooga Valley

The chart displays monthly precipitation patterns in Chattanooga Valley, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Chattanooga Valley, August typically receives around 121 mm (4.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec991711691569612010612110613372139
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Chattanooga Valley

In Chattanooga Valley in August humidity is 67%. With average temperature 26°C (78°F), this humidity feels like a warm embrace, making it essential for travelers to stay hydrated while enjoying leisurely strolls and exploring the vibrant surroundings.

August Average Humidity in Chattanooga Valley

This chart illustrates the average monthly humidity levels in Chattanooga Valley, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Chattanooga Valley is approximately 67%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in Chattanooga Valley

In Chattanooga Valley in August, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chattanooga Valley.

Maximum UV Index Levels in Chattanooga Valley for August

The chart shows the monthly maximum UV Index (UVI) for Chattanooga Valley in August, 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 August, the maximum UV index in Chattanooga Valley typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Chattanooga Valley August 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 August 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 August’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 August’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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