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CheckWeather US›Chattanooga

Chattanooga weather

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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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Next 14 hours

consensus of the three models

7-day forecast

where the models agree, and where they split

Chattanooga, 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.

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 the US?

CheckWeather Score — graded against the weather that actually happened
ProviderCheckWeather Score🌡 Temp💨 Wind🌧 RainRun by
European logo
European ★ Best
Behind Apple Weather, Windy
88
/100rank #1
85±1.5°F96±1.2 mph8592% hitECMWF — European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
Behind Windy & many free apps
74
/100rank #2
82±1.8°F92±2.6 mph5374% 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 40 cities. Lower error means a higher score. The apps you know (AccuWeather, Apple Weather, The Weather Channel) are built on these models.

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?
No single model is always right. NWS, American, European each run their own physics, so we line all three up: when they agree the Chattanooga forecast is reliable, and when they split you should expect surprises. See our tested US accuracy scoreboard for how the models compare.
What is the warmest month in Chattanooga?
Jul is typically the warmest month in Chattanooga, with average highs around 89°F.
How cold does Chattanooga get?
The coldest month in Chattanooga is Jan, when overnight lows average about 34°F.
How much rain does Chattanooga get?
Chattanooga sees roughly 49 in of precipitation a year, with Jan usually the wettest month.

The forecasts Americans check

The two biggest apps keep their model a secret, so we can't show their numbers, only link you to them. The National Weather Service is public, so its data sits right in the comparison above.

NWSNational Weather Service
Open model · shown above ✓AWAccuWeather
Closed model · open ↗↗TWCThe Weather Channel
Closed model · open ↗↗

Nearby

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