Chattanooga, TN Weather by Month and Climate Averages

How much rain does Chattanooga get?

Chattanooga gets 58.6 in of precipitation in an average year, spread over about 120 days with measurable rain. That is more rainy days than 78% of the US.

February is the wettest month, with 6.0 in. October is the driest, with 3.8 in. March has the most rainy days, about 11.

The longest dry spell in the last five years lasted 20 days, to November 9, 2023.

See where Chattanooga ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Tennessee.

Does it snow in Chattanooga?

The snowiest winter on record is 1992–93, with 22.7 in.

The most recent measurable snow at the station fell on January 31, 2026.

See where Chattanooga ranks: snowiest cities in the US.

Chattanooga weather by month

Chattanooga weather in January

In January, Chattanooga averages a high of 45°F and a low of 29°F. It gets 5.5 in of precipitation over about 10 rainy days. The sun is out about 38% of daylight hours. The January record high is 71°F (2002) and the record low is -2°F (2014).

Chattanooga weather in February

In February, Chattanooga averages a high of 49°F and a low of 32°F. It gets 6.0 in of precipitation over about 11 rainy days. The sun is out about 39% of daylight hours. The February record high is 76°F (2023) and the record low is -5°F (1996).

Chattanooga weather in March

In March, Chattanooga averages a high of 58°F and a low of 39°F. It gets 5.6 in of precipitation over about 11 rainy days. The sun is out about 38% of daylight hours. The March record high is 82°F (2012) and the record low is 6°F (1996).

Chattanooga weather in April

In April, Chattanooga averages a high of 67°F and a low of 48°F. It gets 5.5 in of precipitation over about 10 rainy days. The sun is out about 47% of daylight hours. The April record high is 84°F (1999) and the record low is 26°F (2021). April is one of the most comfortable months to visit.

Chattanooga weather in May

In May, Chattanooga averages a high of 74°F and a low of 58°F. It gets 4.3 in of precipitation over about 11 rainy days. The sun is out about 39% of daylight hours. The May record high is 87°F (2019) and the record low is 38°F (1996). May is one of the most comfortable months to visit.

Chattanooga weather in June

In June, Chattanooga averages a high of 80°F and a low of 65°F. It gets 4.2 in of precipitation over about 11 rainy days. The sun is out about 42% of daylight hours. The June record high is 100°F (2010) and the record low is 48°F (2021).

Chattanooga weather in July

In July, Chattanooga averages a high of 83°F and a low of 68°F. It gets 4.8 in of precipitation over about 11 rainy days. The sun is out about 36% of daylight hours. The July record high is 99°F (2012) and the record low is 57°F (2014).

Chattanooga weather in August

In August, Chattanooga averages a high of 83°F and a low of 68°F. It gets 4.0 in of precipitation over about 10 rainy days. The sun is out about 46% of daylight hours. The August record high is 98°F (2007) and the record low is 53°F (2004).

Chattanooga weather in September

In September, Chattanooga averages a high of 77°F and a low of 62°F. It gets 4.9 in of precipitation over about 8 rainy days. The sun is out about 49% of daylight hours. The September record high is 93°F (2011) and the record low is 44°F (2000). September is one of the most comfortable months to visit.

Chattanooga weather in October

In October, Chattanooga averages a high of 67°F and a low of 52°F. It gets 3.8 in of precipitation over about 8 rainy days. The sun is out about 58% of daylight hours. The October record high is 93°F (2019) and the record low is 28°F (2006). October is one of the most comfortable months to visit.

Chattanooga weather in November

In November, Chattanooga averages a high of 57°F and a low of 41°F. It gets 4.6 in of precipitation over about 9 rainy days. The sun is out about 50% of daylight hours. The November record high is 81°F (2016) and the record low is 15°F (2019).

Chattanooga weather in December

In December, Chattanooga averages a high of 48°F and a low of 33°F. It gets 5.4 in of precipitation over about 10 rainy days. The sun is out about 40% of daylight hours. The December record high is 73°F (2007) and the record low is -6°F (2022).

Sunshine, humidity and wind in Chattanooga

October is the sunniest month in Chattanooga, with sunshine about 58% of daylight hours. July is the cloudiest, at 36%. Over the year the sun shines about 44% of daylight hours. Chattanooga is cloudier than 71% of the US.

Humidity peaks in August at 73% and is lowest in March at 60%.

Chattanooga has about 10 days a year above 90°F. Chattanooga is cooler than 79% of the US.

Thunderstorms occur on about 4 days a year.

See where Chattanooga ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

First and last freeze in Chattanooga

The first fall freeze in Chattanooga typically comes around November 6, and the last spring freeze around March 28. That leaves a frost-free growing season of about 223 days.

Chattanooga weather records

The hottest temperature on record at the Chattanooga station is 100°F, on June 26, 2010. The coldest is -6°F, on December 23, 2022.

The wettest day on record brought 8.4 in of rain, on September 17, 2004.

43 all-time records have been set at the station since 1995.

The best time to visit Chattanooga

The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 71°F.

Winter (December–February) is chilly, with average highs around 47°F and lows near 31°F. Snow is possible.

Spring (March–May) is mild, with average highs around 66°F and lows near 48°F.

Summer (June–August) is warm, with average highs around 82°F and lows near 67°F. It can feel humid.

Autumn (September–November) is mild, with average highs around 67°F and lows near 51°F.

Chattanooga climate questions

How much rain does Chattanooga get?

Chattanooga gets 58.6 in of precipitation in an average year, over about 120 rainy days.

What is the wettest month in Chattanooga?

February is the wettest month in Chattanooga, with 6.0 in. October is the driest, with 3.8 in.

How many rainy days does Chattanooga have a year?

Chattanooga has about 120 days with measurable rain in an average year. March has the most, about 11.

What is the hottest month in Chattanooga?

July is the warmest month in Chattanooga, with an average high of 83°F.

What is the coldest month in Chattanooga?

January is the coldest month in Chattanooga, with an average low of 29°F.

What is the record high temperature in Chattanooga?

The record high at the Chattanooga station is 100°F, set on June 26, 2010. The record low is -6°F, on December 23, 2022.

What is the sunniest month in Chattanooga?

October is the sunniest month in Chattanooga, with sunshine about 58% of daylight hours. July is the cloudiest.

When is the first frost in Chattanooga?

The first fall freeze in Chattanooga typically comes around November 6. The last spring freeze is around March 28.

What is the best time to visit Chattanooga?

The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 71°F.