Marietta climate
Marietta offers a mild winter with a humid summer and allergy burden
Marietta averages a 90°F summer high, with 58 days above 90°F, and the climate profile lists five comfortable months. The average winter low is 36°F with 44 days below freezing, so winter is generally easier than summer while still requiring a home that handles cold mornings and occasional icy surfaces.
Humidity is 76 percent, allergy levels are Poor, solar exposure is 1,656 peak sun hours, and modeled fine particle pollution is 8.2 micrograms per cubic meter for 2021 through 2025. Moderate heat risk and High storm exposure make cooling, indoor air, power, shade, and flexible outdoor plans important.
Living through the seasons
Summer and winter comfort tell a similar story.
- Overall Comfort
- Good
2.8 / 5
- Average Summer High
- 90°F
- Days Above 90°F
- 58 days/year
- Summer Feel
- Very Good
Hot · 90°F
Good
3.4 / 5
- Average Winter Low
- 36°F / 2°C
- Days Below Freezing
- 44 days/year
- Winter Feel
- Good
Very Good
Good
2.9 / 5
The shape of the year
Humidity, comfortable months, and sunshine show how the seasons differ.
- Humidity
- 76%
- Comfortable Months
- 5 months
- Solar Exposure
- 1656 peak sun hrs/yr
Good
Fair
Fair
Air, allergies, and weather
Air quality and allergies shape day to day comfort. The best months and weather risks help with timing.
Air and allergies
- Air Quality
- Excellent
- Allergy Levels
- Poor
4.4 / 5
Current AQI
Checking…
Current PM2.5
Checking…
Timing and weather
- Long Term Fine Particle Pollution
- 8.2 µg/m³ 2021-2025 modeled average
- Best Months
- Apr, May, Jun, Sep, Oct
- Toughest Months
- Jan, Jul, Aug
- Heat Risk
- Moderate
- Drought Risk
- Low - Medium (0.2-0.4)
- Weather Volatility
- Moderate
Good · 8.2 µg/m³ 2021-2025 modeled average
Good
3.3 / 5
Marietta in everyday life
Could Marietta work for you?
What may work well
- Marietta offers five comfortable months and a winter that is less demanding than many colder retirement markets.
- April, May, June, September, and October provide a useful warm season for Square, park, and mountain plans when the hour is chosen carefully.
- Marietta’s air quality is listed Excellent, while the climate sources make room for a more detailed home comfort review.
What to think about
- A 90°F average summer high and 58 days above 90°F make cooling and shade central household concerns.
- Humidity is 76 percent and allergy levels are Poor, so indoor air and moisture questions deserve direct attention.
- Moderate heat and High storm exposure can affect power, routes, medications, and time outside even when winter feels manageable.
Make Marietta’s seasons part of the home decision
Plan around the hot stretch
List the outdoor time that matters from April through October, then identify shade, indoor, and early hour alternatives for 58 hot days and Poor allergy levels.
Review the home envelope
For Marietta, ask about cooling, filters, ventilation, moisture, insulation, entryways, power backup, windows, and the actual utility responsibility.
Keep storm routes ready
Pair Marietta’s climate rows with flood, storm, drainage, medication, cooling, emergency contact, and alternate route questions.
Choose the decision actions
Save the Marietta seasonal home plan, Compare another address, and choose Find my fit after heat, air, storm, winter, and mobility questions are clear.
Questions retirees ask
What is Marietta’s summer climate like?
The average summer high is 90°F, with 58 days above 90°F and a Very Good summer feel. For Marietta, plan shade, cooling, early outings, indoor options, and a response to power or storm disruption.
How cold is a Marietta winter?
The average winter low is 36°F, with 44 days below freezing. Review heating, insulation, entryways, pipes, parking, vehicle readiness, and routes for colder mornings.
Which Marietta months are easiest for outdoor plans?
Marietta lists April, May, June, September, and October as the best months, with five comfortable months overall. Marietta’s personal heat, humidity, and allergy tolerance should guide the comparison.
Why do Marietta’s allergy and air rows both matter?
Air quality is Excellent, while allergy levels are Poor, humidity is 76 percent, and modeled fine particle pollution is 8.2 micrograms per cubic meter. For Marietta, review filters, ventilation, moisture, and personal response rather than treating one row as the whole climate.
Does Marietta’s mild winter remove storm planning?
No. Cobb County has High storm and flood rows, and summer heat can add power and cooling concerns. For Marietta, pair seasonal comfort with drainage, insurance, emergency contacts, and alternate routes.
Marietta gives a household a useful warm season and a comparatively manageable winter, but summer heat, humidity, allergies, and storms shape the year. Save the Marietta seasonal home plan, Compare another address, and choose Find my fit after cooling, air, route, and hazard needs are visible.
Sources
Climate comfort helps estimate how practical daily life may feel across the year, especially for heat, humidity, cold, and seasonal constraints.
Seasonal timing, health conditions, air conditioning, air quality, and elevation can change the lived experience.
- NASA POWER
Used for Overall Comfort, Summer Feel, Average Summer High, Days Above 90°F, Winter Feel, Average Winter Low, Days Below Freezing, Humidity, Comfortable Months, Solar Exposure, Best Months, Toughest Months, Allergy Levels, Heat Risk
- Open-Meteo / Copernicus CAMS, checked against U.S. EPA AirData
Used for Air Quality, Long-Term Fine-Particle Pollution
Checked 2026-05-18
- World Resources Institute (WRI)
Used for Drought Risk
Checked 2026-07-13
- Open-Meteo + Climate Heuristic
Used for Weather Volatility
Partnerships never affect rankings, scores, methodology, or inclusion.
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