When to go · United States

When to go to Chattanooga

Twelve months of averages for Chattanooga, and what they say about when to go.

When to go

What the averages say

Mean daily highs and lows and the month's rain, averaged over 2001 to 2020.

On these averages, Chattanooga has a mean high between 18°C and 32°C and under 150 mm of rain in April to June, September and October.

Hot months (a mean high of 32°C or more): July and August.
Humid months (a high of 25°C or more with relative humidity of 70% or more): May to September.
Cold months (a mean high under 10°C): January.
The warmest month is July (32°C) and the coolest January (9°C). The wettest is December (140 mm) and the driest October (89 mm); about 1,354 mm of rain falls in a year.

How these sentences are worded

Each sentence is written from the figures by fixed rules, and says no more than they do. Mild to warm: a mean daily high from 18°C up to 32°C. Hot: 32°C or more. Cool: 10°C up to 18°C. Cold: under 10°C. Dry: under 50 mm of rain in the month; wet: 150 mm or more. Humid: a high of 25°C or more with relative humidity of 70% or more. A month is described as good for going when it is mild to warm and not wet.

Chattanooga: highs, lows and rainHighLowRain

The year at a glance

Mild to warm and dry
Mild to warm, humid or showery
Hot
Cool
Wet
Cold

JanCold
FebCool
MarCool
AprMild–warm, mixed
MayMild–warm, mixed
JunMild–warm, mixed
JulHot
AugHot
SeptMild–warm, mixed
OctMild–warm, mixed
NovCool
DecCool

Month by month

Every month in Chattanooga

The whole year, with humidity, cloud and the sunlight reaching the ground.

Climate in Chattanooga by month: mean daily high and low, rain, and what the month is like
Month	High	Low	Rain	Humidity	Cloud	Sunlight (kWh/m²/day)	High in Dubai	What it is like
January	9°C	-1°C	109 mm	83%	64%	2.3	23°C	Cold
February	11°C	0°C	122 mm	83%	69%	2.9	24°C	Cool
March	16°C	5°C	118 mm	81%	63%	4	27°C	Cool
April	22°C	9°C	115 mm	78%	56%	5.3	31°C	Mild to warm, humid or showery
May	26°C	14°C	115 mm	77%	58%	5.8	35°C	Mild to warm, humid or showery
June	30°C	19°C	106 mm	73%	53%	6.3	37°C	Mild to warm, humid or showery
July	32°C	21°C	127 mm	71%	56%	6	39°C	Hot
August	32°C	20°C	96 mm	70%	51%	5.5	39°C	Hot
September	29°C	16°C	108 mm	70%	48%	4.8	37°C	Mild to warm, humid or showery
October	23°C	10°C	89 mm	72%	47%	3.7	34°C	Mild to warm, humid or showery
November	16°C	4°C	109 mm	76%	51%	2.8	29°C	Cool
December	11°C	0°C	140 mm	84%	65%	2	25°C	Cool

The Dubai column is Dubai's mean daily high, for comparison.

Modelled averages for an area about 50 km across, not a weather station's record: NASA POWER climatology, 2001–2020. These data were obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program.

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Plan a trip to Chattanooga

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Plan a trip to Chattanooga More about Chattanooga When to go

Month

High

Low

Rain

Humidity

Cloud

Sunlight (kWh/m²/day)

High in Dubai

What it is like

January

9°C

-1°C

109 mm

83%

64%

2.3

23°C

Cold

February

11°C

0°C

122 mm

83%

69%

2.9

24°C

Cool

March

16°C

5°C

118 mm

81%

63%

27°C

Cool

April

22°C

9°C

115 mm

78%

56%

5.3

31°C

Mild to warm, humid or showery

May

26°C

14°C

115 mm

77%

58%

5.8

35°C

Mild to warm, humid or showery

June

30°C

19°C

106 mm

73%

53%

6.3

37°C

Mild to warm, humid or showery

July

32°C

21°C

127 mm

71%

56%

39°C

Hot

August

32°C

20°C

96 mm

70%

51%

5.5

39°C

Hot

September

29°C

16°C

108 mm

70%

48%

4.8

37°C

Mild to warm, humid or showery

October

23°C

10°C

89 mm

72%

47%

3.7

34°C

Mild to warm, humid or showery

November

16°C

4°C

109 mm

76%

51%

2.8

29°C

Cool

December

11°C

0°C

140 mm

84%

65%

25°C

Cool