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Marietta, GA 30066 Weather
Current conditions
Observed at Cobb County International Airport - McCollum Field · 22 min ago
Forecast
10-day-
Today
Sunny, with a high near 75. East wind 0 to 5 mph.
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Tonight
Clear, with a low around 45. Northwest wind 0 to 5 mph.
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Thursday
Sunny, with a high near 74. Northwest wind 0 to 5 mph.
National Weather Service forecast updated 5 hrs ago.
Hourly
Hourly forecast- Now63°
- 12 PM67°
- 1 PM70°
- 2 PM72°
- 3 PM73°
- 4 PM74°
- 5 PM73°
- 6 PM72°
- 7 PM67°
- 8 PM61°
- 9 PM59°
- 10 PM56°
- 11 PM54°
- Thu12 AM53°
- 1 AM51°
- 2 AM50°
- 3 AM49°
- 4 AM48°
- 5 AM47°
- 6 AM46°
- 7 AM46°
- 8 AM46°
- 9 AM49°
- 10 AM57°
10-day forecast
Details- TodayOct 21Sunny45°75°
- ThuOct 22Sunny48°74°
- FriOct 23Sunny46°71°
- SatOct 24Sunny43°66°
- SunOct 25Sunny43°68°
- MonOct 26Sunny45°72°
- TueOct 27Mostly Sunny48°75°
- WedOct 28Cloudy55°74°
- ThuOct 29Sunny51°74°
- FriOct 30Sunny52°77°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Marietta
More weather news- Atlanta On Fire Watch as Weeklong Dry Spell Sets In
The National Weather Service says relative humidity could drop to 30% or lower for at least four hours Wednesday afternoon and evening. With dry fuels across the area, residents should check with local burn-permitting…
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High fire danger expected across much of Georgia WednesdayCobb County and most of north and central Georgia face high fire danger Wednesday afternoon into the evening, Oct. 21, according to a special weather statement issued by the National Weather Service. Relative humidity…
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Feeling Like Fall! Cool, dry conditions prevail for Metro Atlanta this weekAfter a relentless Summer that continued well into the Fall season, perfect Autumnal weather will stick around this week. — After a relentless Summer that continued well into the Fall season, we are rewarded with…
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Tuesday night forecastFOX 5 Atlanta Chilly, November-like mornings and comfortable afternoons continue across North Georgia. Highs reach the mid-70s Wednesday with plenty of sunshine before a late-week cold front brings cooler air, leaving…
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Tuesday evening weather forecastFOX 5 Atlanta Chilly, November-like mornings and comfortable afternoons continue across North Georgia. Highs reach the mid-70s Wednesday with plenty of sunshine before a late-week cold front brings cooler air, leaving…
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Sunshine and chilly mornings all week in Atlanta before weekend rain chancesCBS News Atlanta is a local news organization that is part of CBS News and Stations. Also referred to as WUPA and channel 69, CBS News Atlanta offers local breaking news, weather coverage and investigative reporting…
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FIRST ALERT FORECAST: Mostly sunny, 70s this afternoonATLANTA, Ga. (Atlanta News First) — It’ll be another nice day in north Georgia with warmer afternoon highs. Plan on the mid 70s in Atlanta with the upper 70s as you travel further south. Due to dry air in north Georgia…
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Tuesday evening First Alert weather forecast - 10/20/26CBS News Tuesday evening First Alert weather forecast - 10/20/26 Becerra, Hilton campaign for California governor in Bay Area 2 weeks out from Election Day Oakland considers raising nuisance property fines to $10,000 a…
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Tuesday afternoon weather forecastFOX 5 Atlanta
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Cobb climate summary & weather forecast for Tuesday, October 20, 2026Tonight it is expected to be mostly clear, with an overnight low of around 47 degrees. Sunny, with a high near 75. Calm wind. Mostly clear, with a low around 47. North wind around 5 mph becoming calm. Sunny, with a high…
Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- WedModerate (56)
Atlanta, GA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Almanac
MonthlyMarietta Dobbins Afb, records since 1949. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).
Nearby
- Atlanta 34 km
- South Fulton 52 km
- Sandy Springs 17 km
- Roswell 13 km
- Johns Creek 28 km
- Alpharetta 20 km
- Smyrna 17 km
- Brookhaven 25 km
- Stonecrest 50 km
- Dunwoody 19 km
- Peachtree Corners 27 km
- Milton 21 km
Forecasters' discussion
From the National Weather Service office in FFC, issued 5 hrs ago
Key Messages
- Elevated fire danger is likely the next several afternoons for portions of the area due to low relative humidity.
- Dry conditions and pleasant temperatures will persist for the next 7 days with a slight cooldown over the weekend.
Short Term
(Today through Thursday) Issued at 336 AM EDT Wed Oct 21 2026
Conditions remain very dry across north and central GA. A wave break over the coming days will transition upper level flow from the NW to the NE, generally having little to no impact on moisture or precipitation chances. PWATs will remain near the climatological 10th percentile, meaning precipitation chances will remain near zero.
Temperatures during the day will continue the slight upswing. Highs will likely reach the mid to upper 70s by Thursday for most. With little in the way of increased moisture, this likely means we will continue to see RH values fall to below 25% for much of the area each afternoon. Elevated fire danger to continue.
Lows each day will continue to be in the low 40s for most, though we could continue to see upper 30s for the northern portions of the CWA.
Long Term
(Thursday night through Tuesday) Issued at 336 AM EDT Wed Oct 21 2026
On the whole, the long-term forecast period will remain uneventful. Dry weather will persist from the weekend into at least the first half of next week.
The only feature of much interest will be a backdoor cold front that will arrive Friday and provide a shot of cooler air for the weekend as a surface high settles across the Northeast and Mid-Atlantic. High temperatures will drop back toward the 60s/low 70s over the weekend with lows nudging into the lower to mid 40s for most by Sunday. Temperatures then likely begin a gradual rebound thereafter as the surface high settles southward.
Aviation
(12Z TAFS) Issued at 611 AM EDT Wed Oct 21 2026
VFR thru period, few high clouds. Winds light and vrb, less than 6kts, but generally NE turn NW tngt. No precip.
//ATL Confidence...12Z Update... High confidence all elements.
SM
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.