2025 Compare Climate & Weather:
Chattanooga, TN vs Louisville, KY

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Highlights

On average, there are 195 sunny days per year in Louisville. Chattanooga averages 207 sunny days per year. The US average is 205 sunny days.

Louisville, Kentucky gets 46.2 inches of rain, on average, per year. Chattanooga, Tennessee gets 51.1 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Louisville averages 8.7 inches of snow per year. Chattanooga averages 1.5 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Louisville, Kentucky
Summer High: the July high is around 87.6 degrees
Winter Low: the January low is 25.5
Rain: averages 46.2 inches of rain a year
Snow: averages 8.7 inches of snow a year

Chattanooga, Tennessee
Summer High: the July high is around 89 degrees
Winter Low: the January low is 28.9
Rain: averages 51.1 inches of rain a year
Snow: averages 1.5 inches of snow a year

BestPlaces Comfort Index
Louisville

The annual BestPlaces Comfort Index for Louisville-Jefferson County is 7.3 (10=best), which means it is one of the most pleasant places in Kentucky.

7.3 / 10
September, May and October are the most pleasant months in Louisville-Jefferson County, while January and December are the least comfortable months.

Chattanooga

The annual BestPlaces Comfort Index for Chattanooga is 7.5 (10=best), which means it is one of the most pleasant places in Tennessee.

7.5 / 10
May, September and October are the most pleasant months in Chattanooga, while January and July are the least comfortable months.

Today's Weather - Chattanooga, TN

10 AM PST

Chance Showers And Thunderstorms

73°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonChance Showers And Thunderstorms77° / 61°SE 5 to 10 mph
TuesdayShowers And Thunderstorms74° / 61°S 0 to 5 mph
WednesdayChance Showers And Thunderstorms81° / 64°S 0 to 5 mph
ThursdayMostly Sunny87° / 70°S 0 to 10 mph
FridayChance Showers And Thunderstorms87° / 68°SW 0 to 10 mph
SaturdayShowers And Thunderstorms Likely85° / 64°SW 5 to 10 mph
SundayChance Rain Showers85° / 67°SW 0 to 5 mph
Today's Weather - Louisville, KY

10 AM PST

Chance Showers And Thunderstorms

72°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonChance Showers And Thunderstorms77° / 62°SE 10 mph
TuesdayScattered Showers And Thunderstorms77° / 61°SE 5 mph
WednesdayScattered Showers And Thunderstorms80° / 65°S 2 to 6 mph
ThursdayPartly Sunny89° / 70°S 6 to 13 mph
FridayScattered Showers And Thunderstorms85° / 65°SW 8 to 13 mph
SaturdayScattered Showers And Thunderstorms81° / 61°SW 7 to 13 mph
SundayPartly Sunny then Isolated Rain Showers79° / 62°SW 7 mph
Average Monthly High / Low (°F)
MonthChattanooga, TNLouisville, KY
January50° / 29°42° / 26°
February54° / 32°47° / 29°
March63° / 39°57° / 36°
April72° / 46°68° / 46°
May79° / 55°77° / 56°
June86° / 64°85° / 65°
July89° / 68°88° / 68°
August89° / 67°87° / 67°
September83° / 60°81° / 59°
October73° / 48°69° / 47°
November62° / 38°57° / 38°
December52° / 31°45° / 29°
Hot, Freezing, Rainy, Snowy Days: Chattanooga / Louisville
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 020 / 239 / 100 / 2
February0 / 015 / 189 / 90 / 2
March0 / 08 / 119 / 110 / 1
April0 / 02 / 28 / 110 / 0
May1 / 00 / 08 / 120 / 0
June8 / 50 / 09 / 100 / 0
July13 / 100 / 09 / 90 / 0
August13 / 100 / 08 / 80 / 0
September4 / 30 / 07 / 70 / 0
October0 / 02 / 16 / 80 / 0
November0 / 09 / 88 / 100 / 0
December0 / 017 / 209 / 110 / 2
July is the hottest month for Chattanooga with an average high temperature of 89.0°, which ranks it as warmer than most places in Tennessee. In Chattanooga, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chattanooga are May, September and October.

July is the hottest month for Louisville-Jefferson County with an average high temperature of 87.6°, which ranks it as warmer than most places in Kentucky. In Louisville-Jefferson County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Louisville-Jefferson County are May, September and June.
January has the coldest nighttime temperatures for Chattanooga with an average of 28.9°. This is one of the warmest places in Tennessee.

January has the coldest nighttime temperatures for Louisville-Jefferson County with an average of 25.5°. This is warmer than most places in Kentucky.

In Chattanooga, there are 39.0 days annually when the high temperature is over 90°, which is hotter than most places in Tennessee.

In Louisville-Jefferson County, there are 29.0 days annually when the high temperature is over 90°, which is about average compared to other places in Kentucky.

In Chattanooga, there are 71.4 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Tennessee.

In Louisville-Jefferson County, there are 82.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Kentucky.

In Chattanooga, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Tennessee.

In Louisville-Jefferson County, there are 0.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Kentucky.

December is the wettest month in Chattanooga with 4.9 inches of rain, and the driest month is October with 3.2 inches. The wettest season is Spring with 29% of yearly precipitation and 23% occurs in Autumn, which is the driest season. The annual rainfall of 51.1 inches in Chattanooga means that it is drier than most places in Tennessee.


May is the wettest month in Louisville-Jefferson County with 5.2 inches of rain, and the driest month is September with 3.2 inches. The wettest season is Summer with 29% of yearly precipitation and 22% occurs in Winter, which is the driest season. The annual rainfall of 46.2 inches in Louisville-Jefferson County means that it is drier than most places in Kentucky.

December is the rainiest month in Chattanooga with 9.2 days of rain, and October is the driest month with only 6.3 rainy days. There are 99.0 rainy days annually in Chattanooga, which is one of the least rainy places in Tennessee. The rainiest season is Spring when it rains 28% of the time and the driest is Winter with only a 21% chance of a rainy day.

May is the rainiest month in Louisville-Jefferson County with 11.7 days of rain, and September is the driest month with only 7.2 rainy days. There are 115.3 rainy days annually in Louisville-Jefferson County, which is about average compared to other places in Kentucky. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 1.5 inches in Chattanooga means that it is one of the least snowy places in Tennessee.

An annual snowfall of 8.7 inches in Louisville-Jefferson County means that it is about average compared to other places in Kentucky.
January is the snowiest month in Chattanooga with 0.6 inches of snow, and 1 month of the year have significant snowfall.

February is the snowiest month in Louisville-Jefferson County with 2.9 inches of snow, and 4 months of the year have significant snowfall.

DID YOU KNOW?

Many people confuse Weather and Climate, but they are different. Weather refers to the conditions of the atmosphere over a short period of time, while Climate refers to the conditions of the atmosphere over a long period of time.

Weather, more specifically, refers to how the atmosphere behaves and its effects on life and human activities. Most people think of Weather in terms of what can be observed: temperature, humidity, precipitation, and cloudy/sunny conditions. Weather conditions constantly change on a minute-to-minute basis.

Climate is a record of the average weather conditions for a given place over a long period of time, often referred to as Climate Normals. A 30-year period of record is a common requirement to be considered a Climate Normal.

Reviews for Chattanooga    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

Start Your Review of Chattanooga

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Reviews for Louisville    2 Reviews
Jill · Sherman Oaks, CA
re:
Over 16 years ago

Hi. I'd like to know if you still feel the same way about living in Broomfield. I went there this past July to check it out (along with Lafayette, Boulder (can't  More

   |    Reply
NC For Me · Apex, NC
re:
Over 16 years ago

Apex is perfect for what you are looking for. It's close enough to Raleigh, Durham, Chapel Hill to find a job and Cary the next town over, is a little more expensive but  More

   |    Reply

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Zips In Chattanooga, Tennessee
37421, 37343, 37415, 37411, 37405, 37416, 37406, 37404, 37407, 37403, 16 total
Zips In LOUISVILLE, KENTUCKY
40214, 40216, 40299, 40219, 40229, 40272, 40291, 40245, 40218, 40220, 20 total
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