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May Weather in Chattanooga Valley, United States

Last updated: June 24, 2025

In May, the average temperature in Chattanooga Valley, United States hovers around 21°C (70°F), with a minimum plummeting to 4°C (39°F) and a maximum soaring to 34°C (93°F). Expect about 96 mm (3.8 in) of precipitation over 10 days, coupled with an average humidity level of 83%. Prepare for a mix of warmth and moisture during your visit!

May Temperature in Chattanooga Valley

In May in Chattanooga Valley, the average temperature is 21°C (70°F), with maximums reaching 34°C (93°F) and minimums dipping as low as 4°C (39°F). This pleasant climate makes it an ideal time for outdoor activities and exploring the local attractions.

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

The chart illustrates May 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, May typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 4°C (39°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.

May Precipitation in Chattanooga Valley

In Chattanooga Valley in May, the total precipitation amount is 96 mm (3.8 in) over a span of 10 days.

May Precipitation Trends in Chattanooga Valley

The chart displays monthly precipitation patterns in Chattanooga Valley, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Chattanooga Valley, May typically receives around 96 mm (3.8 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec991711691569612010612110613372139
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Chattanooga Valley

In Chattanooga Valley in May humidity is 83%. With an average temperature of 21°C (70°F), this humidity feels like you’re enveloped in a warm, tropical embrace, making it essential to stay hydrated and take breaks during your travels.

May Average Humidity in Chattanooga Valley

This chart illustrates the average monthly humidity levels in Chattanooga Valley, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Chattanooga Valley is approximately 83%, 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 May generated using information from the Copernicus Climate Change Service.

May UV Index in Chattanooga Valley

In Chattanooga Valley in May, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Chattanooga Valley.

Maximum UV Index Levels in Chattanooga Valley for May

The chart shows the monthly maximum UV Index (UVI) for Chattanooga Valley in May, 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 May, the maximum UV index in Chattanooga Valley typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109753
Data source: Chattanooga Valley May 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 May 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 May’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 May’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

Compare Chattanooga Valley's Climate with Cities Worldwide