2025 Compare Climate & Weather:
Phoenix, AZ vs Chattanooga, TN

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Highlights

On average, there are 207 sunny days per year in Chattanooga. Phoenix averages 299 sunny days per year. The US average is 205 sunny days.

Chattanooga, Tennessee gets 51.1 inches of rain, on average, per year. Phoenix, Arizona gets 9.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Chattanooga averages 1.5 inches of snow per year. Phoenix averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Phoenix, Arizona
Summer High: the July high is around 104.5 degrees
Winter Low: the January low is 43.2
Rain: averages 9.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index
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.

Phoenix

The annual BestPlaces Comfort Index for Phoenix is 7.3 (10=best), which means it is less comfortable than most places in Arizona.

7.3 / 10
April, March and November are the most pleasant months in Phoenix, while July and August are the least comfortable months.

Today's Weather - Phoenix, AZ

4 PM PST

Sunny

91°F

DAYDESCRIPTIONHIGH / LOWWIND
This AfternoonSunny93° / 71°W 5 mph
FridaySunny100° / 76°E 5 mph
SaturdaySunny101° / 78°E 5 to 15 mph
SundayMostly Sunny103° / 77°SE 5 to 15 mph
MondayMostly Sunny97° / 70°SSW 0 to 15 mph
TuesdayMostly Sunny86° / 63°SW 5 to 15 mph
WednesdaySunny87° / 64°SSW 0 to 10 mph
Today's Weather - Chattanooga, TN

4 PM PST

Chance Showers And Thunderstorms

77°F

DAYDESCRIPTIONHIGH / LOWWIND
TonightChance Showers And Thunderstorms58° / 77°NW 0 to 5 mph
Friday NightPartly Cloudy52° / 72°NE 5 mph
Saturday NightSlight Chance Rain Showers54° / 77°NE 0 to 5 mph
Sunday NightChance Rain Showers58° / 71°E 0 to 5 mph
Monday NightShowers And Thunderstorms62° / 76°E 0 to 5 mph
Tuesday NightShowers And Thunderstorms then Chance Showers And Thunderstorms61° / 82°S 0 to 5 mph
Wednesday NightChance Rain Showers then Partly Cloudy64° / 87°S 0 to 5 mph
Average Monthly High / Low (°F)
MonthPhoenix, AZChattanooga, TN
January67° / 43°50° / 29°
February70° / 46°54° / 32°
March76° / 50°63° / 39°
April84° / 57°72° / 46°
May94° / 65°79° / 55°
June102° / 73°86° / 64°
July105° / 80°89° / 68°
August103° / 80°89° / 67°
September98° / 73°83° / 60°
October88° / 61°73° / 48°
November75° / 49°62° / 38°
December65° / 42°52° / 31°
Hot, Freezing, Rainy, Snowy Days: Phoenix / Chattanooga
MonthHot DaysFreezing DaysRainy DaysSnowy Days
January0 / 01 / 204 / 90 / 0
February0 / 00 / 154 / 90 / 0
March1 / 00 / 84 / 90 / 0
April8 / 00 / 22 / 80 / 0
May22 / 10 / 01 / 80 / 0
June29 / 80 / 00 / 90 / 0
July31 / 130 / 04 / 90 / 0
August31 / 130 / 04 / 80 / 0
September28 / 40 / 03 / 70 / 0
October13 / 00 / 22 / 60 / 0
November1 / 00 / 92 / 80 / 0
December0 / 02 / 174 / 90 / 0
July is the hottest month for Phoenix with an average high temperature of 104.5°, which ranks it as warmer than most places in Arizona. In Phoenix, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Phoenix are March, November and April.

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.
December has the coldest nighttime temperatures for Phoenix with an average of 42.2°. This is one of the warmest places in Arizona.

January has the coldest nighttime temperatures for Chattanooga with an average of 28.9°. This is one of the warmest places in Tennessee.

In Phoenix, there are 163.2 days annually when the high temperature is over 90°, which is hotter than most places in Arizona.

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

In Phoenix, there are 3.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Arizona.

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 Phoenix, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Arizona.

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.

August is the wettest month in Phoenix with 1.1 inches of rain, and the driest month is June with 0.0 inches. The wettest season is Spring with 35% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 9.2 inches in Phoenix means that it is drier than most places in Arizona.


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.

August is the rainiest month in Phoenix with 4.0 days of rain, and June is the driest month with only 0.4 rainy days. There are 33.1 rainy days annually in Phoenix, which is less rainy than most places in Arizona. The rainiest season is Spring when it rains 34% of the time and the driest is Summer with only a 20% chance of a rainy day.

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.

There is rarely any recorded snowfall in Phoenix, ranking it as one of the least snowy places in Arizona.

An annual snowfall of 1.5 inches in Chattanooga means that it is one of the least snowy places in Tennessee.
Any measurable snowfall is a rare occurance in Phoenix.

January is the snowiest month in Chattanooga with 0.6 inches of snow, and 1 month 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 Phoenix    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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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

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Zips In Phoenix, Arizona
85032, 85033, 85041, 85008, 85035, 85037, 85022, 85009, 85254, 85339, 47 total
Zips In CHATTANOOGA, TENNESSEE
37421, 37343, 37415, 37411, 37405, 37416, 37406, 37404, 37407, 37403, 16 total
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