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CheckWeather USChattanooga
Forecast confidence: High · models disagree by 1°F

Chattanooga weather

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Light drizzle,rain likely tomorrow

NWS, the American and the European model agree on a high near 96° in Chattanooga today. Tomorrow looks rain around 96°, with a 75% chance of rain.

96°73°
96°74°
93°72°
94°71°
86°70°
82°68°
Todaymodels agreeTomorrowmodels agreeSundaymodels agreeMondaymodels agreeTuesdaysplit ±11°Wednesdaysplit ±5°
NWSNational Blend (NBM)
96°
Light drizzle
Today 96°·Low 74°·Rain 17%
AmericanNOAA GFS
97°
Mostly clear
Today 97°·Low 71°·Rain 17%
EuropeanECMWF
95°
Light drizzle
Today 95°·Low 74°·Rain 61%
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Chattanooga weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Chattanooga weather in numbers

from 30 years of measured normals

Chattanooga swings 55°F across the year, from 89°F highs in July to 34°F lows in January, and January is usually the wettest month in a year that brings about 49 in of precipitation.

Warmest month
July
89°F average high
Coldest month
January
34°F average low
Wettest month
January
49 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
February, March, April and May
Residents
181,000
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The weather map: all three models at once

NWS, American, European side by side around Chattanooga and nearby towns.Live rain radar →
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Chattanooga hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

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Chattanooga 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Light drizzle
96° 73°
models agree
Tomorrow
Rain
96° 74°
models agree
Sun
Light drizzle
93° 72°
models agree
Mon
Showers
94° 71°
models agree
Tue
Showers
86° 70°
±11°
Wed
Drizzle
82° 68°
±5°
Thu
Drizzle
81° 65°
±14°
Fri
Mostly clear
80° 62°
±4°
Sat
Mostly clear
77° 62°
±8°
Sun
Partly cloudy
78° 61°
±7°
Mon
Light drizzle
79° 62°
±7°
Tue
Showers
73° 58°
±16°
Wed
Partly cloudy
75° 54°
models agree
Thu
Clear
76° 53°
±12°

Chattanooga, Tennessee (TN) is at its warmest in Jul (average highs near 89°F) and coldest in Jan (lows around 34°F), with roughly 49 in of precipitation across the year. Below, compare what NWS, American, European forecast for Chattanooga right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Chattanooga climate by month

average daytime high and overnight low across a typical year
Jan
50°
34°
Feb
60°
40°
Mar
63°
43°
Apr
70°
50°
May
78°
59°
Jun
86°
65°
Jul
89°
70°
Aug
88°
69°
Sep
83°
64°
Oct
74°
54°
Nov
64°
46°
Dec
53°
37°

Which forecast is most accurate in Chattanooga?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
85
/100rank #1
87±1.3°F96±1.3 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
73
/100rank #2
73±2.7°F93±2.1 mph5877% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
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AmericanNOAA GFS
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EuropeanECMWF
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One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Where the models disagree

temperature and rain, judged separately
DayTemperatureRain
Today±1°95° to 97°±44%17% to 61% chance
Tomorrow±3°95° to 98°±57%18% to 75% chance
Sun±3°92° to 95°±21%38% to 59% chance
Mon±3°93° to 95°±11%48% to 59% chance
Tue±11°80° to 91°±16%66% to 82% chance

The models often agree on temperature and still split on rain, and rain is usually what decides whether a plan survives. A wide rain range means the shower is genuinely uncertain, not that the forecast is wrong.

Sunrise and sunset in Chattanooga

today, local time
Sunrise
07:26
Sunset
19:43
Daylight
12h 17m

Common questions

What's the weather in Chattanooga today?
On this page we show what NWS, American, European each forecast for Chattanooga today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Chattanooga today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Chattanooga and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Chattanooga?
Over the last 30 days, the European model has been the most accurate for Chattanooga (CheckWeather Score 85/100), ahead of the American at 73. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Chattanooga?
July is typically the warmest month in Chattanooga, with average highs around 89°F.
How cold does Chattanooga get?
The coldest month in Chattanooga is January, when overnight lows average about 34°F.
How much rain does Chattanooga get?
Chattanooga sees roughly 49 in of precipitation a year, with January usually the wettest month.

Nearby

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