Temperatures in September
It's hot in September in Chattanooga with an average temperature of 30°C. Temperatures this month range from a low of 27°C to a high of 32°C. At night, you can expect temperatures between 17°C and 22°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Chattanooga in September. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of September
The month of September starts in Chattanooga with hot temperatures, averaging around 32°C during the day and nights close to 21°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-September
By mid-September, the average daytime temperature drops to around 30°C, with nights close to 20°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers.
End of September
By the end of September, the average daytime temperature in Chattanooga will be around 29°C, with nights close to 18°C. A shower might show up, but overall the weather will be dry and sunny.
As it gets cooler in the evening, it’s best to wear layers.
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Precipitation in September
In September, there is an average of 83 mm of precipitation, spread over 6 days. The wind speed is around 3 Bft, mostly coming from the Southeast.
The precipitation chance averages 19% per day this month. Though that seems low, there are also a few days with a higher chance of precipitation.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in September for Chattanooga. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Chattanooga in September |
London | ||
|---|---|---|---|
 Average Temperature |
30°C | 20°C | |
 High Temp |
32°C | 22°C | |
| Low Temp |
27°C | 17°C | |
 Total Precipitation |
83 mm | 44 mm | |
| Rainy Days |
6 days | 8 days | |
August
UV index
The UV index is a maximum of 7 this month. That's a moderate to high value on the intensity scale of 1 to 11. Unprotected skin can burn within 15-25 minutes.
Is September a good time to visit Chattanooga?
September is a great month to be in Chattanooga for sunny weather. You’ll get high temperatures and not too much rain this month.
Temperature records for Chattanooga in September
With 38°C, Chattanooga hit the highest temperature in the last 10 years in September 2019. The lowest daytime temperature in this month was 17°C in 2017. The extreme night temperatures ranged from a low of 8°C to a high of 25°C.
Check out the climate of Chattanooga for all months and discover the best travel time
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Daily Temperature in September in Chattanooga
This chart shows the average daily temperatures, both day and night, for each day in September in Chattanooga, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Chattanooga
The chart below shows the average daily precipitation in September for Chattanooga, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 6 days of rain in Chattanooga.
Daily UV Index in September in Chattanooga
This chart shows the average daily UV index in September in Chattanooga, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Chattanooga Over the Years
This chart shows the average temperature in September in Chattanooga, measured in degrees Celsius, over the past years.
Total Precipitation in September in Chattanooga Over the Years
This chart shows the average precipitation in September in Chattanooga, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Chattanooga
Click on a specific day in September for detailed info on the typical weather on that day in Chattanooga. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Chattanooga
Have you been to Chattanooga in September?
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Average Weather in Chattanooga by Month
Click on a month below to see detailed weather info for Chattanooga. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Chattanooga for all months at once
