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CheckWeather USMarietta
Forecast confidence: High · models disagree by 2°F

Marietta weather

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Mostly clear,rain likely tomorrow

NWS, the American and the European model agree on a high near 93° in Marietta today. Tomorrow looks light drizzle around 93°, with a 71% chance of rain.

93°70°
93°72°
90°70°
91°72°
84°69°
78°68°
Todaymodels agreeTomorrowmodels agreeSundaysplit ±7°Mondaysplit ±6°Tuesdaysplit ±7°Wednesdaymodels agree
NWSNational Blend (NBM)
94°
Mostly clear
Today 94°·Low 71°·Rain 5%
AmericanNOAA GFS
92°
Partly cloudy
Today 92°·Low 70°·Rain 5%
EuropeanECMWF
95°
Light drizzle
Today 95°·Low 68°·Rain 84%
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Marietta weather alerts and warnings

active National Weather Service watches, warnings and advisories

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Marietta weather in numbers

from 30 years of measured normals

Marietta swings 52°F across the year, from 88°F highs in July to 36°F lows in January, and January is usually the wettest month in a year that brings about 53 in of precipitation.

Warmest month
July
88°F average high
Coldest month
January
36°F average low
Wettest month
January
53 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
February, March, April and October
Residents
59,000
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The weather map: all three models at once

NWS, American, European side by side around Marietta and nearby towns.Live rain radar →
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Marietta 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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Marietta 10-day forecast, out to 14 days

where the models agree, and where they split
Today
Mostly clear
93° 70°
models agree
Tomorrow
Light drizzle
93° 72°
models agree
Sun
Light drizzle
90° 70°
±7°
Mon
Light drizzle
91° 72°
±6°
Tue
Thunderstorm
84° 69°
±7°
Wed
Light drizzle
78° 68°
models agree
Thu
Cloudy
78° 66°
±14°
Fri
Mostly clear
78° 65°
±11°
Sat
Mostly clear
77° 64°
±11°
Sun
Mostly clear
76° 63°
±4°
Mon
Light drizzle
78° 63°
models agree
Tue
Thunderstorm
79° 64°
models agree
Wed
Cloudy
78° 60°
±5°
Thu
Clear
81° 58°
±12°

Marietta, Georgia (GA) is at its warmest in Jul (average highs near 88°F) and coldest in Jan (lows around 36°F), with roughly 53 in of precipitation across the year. Below, compare what NWS, American, European forecast for Marietta 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.

Marietta climate by month

average daytime high and overnight low across a typical year
Jan
54°
36°
Feb
61°
42°
Mar
65°
45°
Apr
71°
51°
May
79°
60°
Jun
87°
66°
Jul
88°
71°
Aug
88°
69°
Sep
82°
64°
Oct
73°
54°
Nov
64°
47°
Dec
55°
38°

Which forecast is most accurate in Marietta?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
87
/100rank #1
91±0.9°F96±1.3 mph7687% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
66
/100rank #2
85±1.5°F94±1.8 mph2458% 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±2°92° to 95°±79%5% to 84% chance
Tomorrow±3°92° to 94°±57%14% to 71% chance
Sun±7°88° to 94°±43%24% to 67% chance
Mon±6°89° to 94°±30%41% to 71% chance
Tue±7°81° to 87°±5%62% to 67% 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 Marietta

today, local time
Sunrise
07:23
Sunset
19:40
Daylight
12h 17m

Common questions

What's the weather in Marietta today?
On this page we show what NWS, American, European each forecast for Marietta 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 Marietta today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Marietta 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 Marietta?
Over the last 30 days, the European model has been the most accurate for Marietta (CheckWeather Score 87/100), ahead of the American at 66. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Marietta?
July is typically the warmest month in Marietta, with average highs around 88°F.
How cold does Marietta get?
The coldest month in Marietta is January, when overnight lows average about 36°F.
How much rain does Marietta get?
Marietta sees roughly 53 in of precipitation a year, with January usually the wettest month.

Nearby

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