Weather in Atlanta in Celsius: What to Expect All Year

If you’re in Atlanta or planning a visit and you prefer temperatures in Celsius, it helps to understand how the city’s weather usually feels across the year. Atlanta has a humid subtropical climate: hot, muggy summers, mild winters, and plenty of changeable weather in between.

Below is a practical guide to Atlanta weather in Celsius, season by season, plus tips on what to wear, how humidity affects comfort, and where to get reliable local forecasts.

Quick Overview: Atlanta Temperatures in °C

Use this table as a fast reference for typical temperatures in Atlanta, Georgia (°C). These are approximate, but they match what residents commonly experience.

Understanding Atlanta Weather in Celsius

Atlanta temperatures are usually reported in Fahrenheit, but converting to Celsius gives you a clearer, more global sense of the climate:

• 32 °F ≈ 0 °C
• 50 °F ≈ 10 °C
• 68 °F ≈ 20 °C
• 86 °F ≈ 30 °C
• 95 °F ≈ 35 °C

In summer, Atlanta often reaches around 32–34 °C in the afternoon. In winter, daytime temperatures frequently sit near 10–12 °C, with colder mornings.

If you’re used to cooler or drier climates, humidity will be one of the biggest differences you feel in Atlanta, especially from late spring through early fall.

Winter in Atlanta (December–February) in °C

Atlanta winters are generally mild compared with much of the U.S., but they can still feel cold, especially when it’s damp or windy.

Typical winter temperatures (°C):

• Morning lows: around 1–5 °C
• Afternoon highs: around 8–14 °C
• Occasional cold nights can drop below 0 °C (sub-freezing)

Snow does fall some years, but it’s usually light and short-lived. Much more common are cold rain and gray days.

What winter feels like in Atlanta

• Many days: cool but manageable with a light to medium jacket
• Colder spells: can feel biting, especially with wind, even if the thermometer only shows a few degrees below 10 °C
• Ice and freezing rain: occasionally cause hazardous driving and walking conditions, even when temperatures are just around 0 °C

What to wear in winter (°C perspective)

For Atlanta in winter, most residents rely on:

• A medium-weight coat or insulated jacket
• Layers such as sweaters or hoodies
• A hat and gloves on mornings near or below 0 °C
• Waterproof footwear on rainy days

If you’re visiting from a very cold climate, Atlanta’s winter may feel modest. But local buildings, homes, and transit systems are not designed for prolonged deep freezes, so brief cold snaps still have a big impact.

Spring in Atlanta (March–May) in °C

Spring in Atlanta is one of the most pleasant times of the year, with blooming trees, warming temperatures, and frequent sun mixed with scattered showers.

Typical spring temperatures (°C):

• March: about 5–10 °C in the morning, 15–20 °C in the afternoon
• April: about 10–13 °C in the morning, 20–24 °C in the afternoon
• May: about 14–18 °C in the morning, 24–28 °C in the afternoon

What spring feels like in Atlanta

• Early spring (March): can still feel cool, especially in the mornings
• By April and May: days often feel comfortably warm, especially around 20–25 °C
• Rain and thunderstorms are common, but usually brief

You’ll also notice pollen in the air, especially from trees and grasses. This can affect those with allergies, even when the temperature is comfortable around 18–22 °C.

What to wear in spring

• Layered clothing works best: a light jacket or sweater over a t‑shirt
• By late April and May, many people switch to short sleeves and lighter fabrics
• Carry a compact umbrella or light rain jacket for passing showers

Summer in Atlanta (June–August) in °C

Summer in Atlanta is hot, humid, and often sticky. This is when understanding Celsius values is especially useful if you’re planning outdoor activities.

Typical summer temperatures (°C):

• Morning lows: around 20–24 °C
• Afternoon highs: around 30–34 °C
• Some hotter days can reach 35–37 °C

Heat and humidity: Why it feels hotter

Humidity in Atlanta summers can be high, especially in July and August. When it’s 32 °C with high humidity, it can feel even hotter because:

• Sweat doesn’t evaporate as easily
• The air can feel heavy and muggy
• Nights often stay warm, sometimes not dropping below 22–24 °C

This is why weather updates sometimes mention a “heat index”—a measure of how the temperature feels when humidity is included.

Staying comfortable and safe in summer

If you live in or visit Atlanta during summer and see forecasts near 30–35 °C, consider:

• Plan strenuous outdoor activities (like running or hiking) for early morning or later in the evening
• Use air conditioning whenever possible—most homes, restaurants, hotels, and public buildings in Atlanta are cooled
• Drink water regularly, even if you don’t feel very thirsty
• Wear light-colored, breathable clothing and a hat when outside

Many local events, festivals, and outdoor concerts in Atlanta are scheduled for late afternoon or evening to avoid the peak heat of the day.

Fall in Atlanta (September–November) in °C

Fall in Atlanta offers a gradual break from the summer heat, with cooler mornings and pleasantly warm days.

Typical fall temperatures (°C):

• September: mornings around 18–20 °C, afternoons 26–30 °C
• October: mornings around 12–15 °C, afternoons 21–25 °C
• November: mornings around 7–10 °C, afternoons 15–20 °C

What fall feels like

• Early fall can still feel like summer at times, especially in early September
• By October, many days sit comfortably near 20–24 °C, ideal for outdoor activities
• November brings cooler, crisper air, especially in the mornings

Fall is a favorite season for outdoor attractions in and around Atlanta, such as the Atlanta BeltLine, Piedmont Park, and nearby hiking areas in North Georgia.

What to wear in fall

• Early fall: similar to late summer—short sleeves and lightweight outfits
• Mid to late fall: a light sweater or jacket in the morning and evening, with comfortable daytime temperatures often above 18 °C

Rain, Storms, and Severe Weather in Atlanta (°C Context)

Atlanta gets rain throughout the year, and thunderstorms are common in warmer months.

Key points in Celsius terms:

• Warm-season showers often pop up on days around 28–32 °C
• Thunderstorms can form quickly in hot, humid conditions
• In winter, rain near 2–4 °C can occasionally turn into freezing rain or sleet

You may also hear about:

• Severe thunderstorms: Sometimes bring heavy rain, gusty winds, hail, or occasional tornadoes in the region
• Tropical systems or remnants: Atlanta is inland, but moisture from Gulf or Atlantic storms can bring very heavy rain and gusty winds, even when temperatures are around 20–25 °C

When forecasts mention severe weather, local officials often advise staying informed and having a way to receive alerts, especially during peak storm seasons in spring and summer.

Humidity, “Feels Like” Temperature, and Air Quality

Humidity and “feels like” temperatures

When it’s 30 °C in Atlanta in July with high humidity, your body can experience it more like 35 °C or higher. That is why many residents plan midday indoor breaks or seek shade during these hours.

To stay more comfortable:

• Prioritize shade and cooling centers (such as libraries, malls, and community centers) when it’s very hot
• Take extra care with outdoor activities on days above 32 °C, especially with high humidity

Air quality on hot days

On some summer days, especially when temperatures reach the low- to mid-30s °C, air quality can become hazy or smoggy. Local agencies sometimes issue air quality alerts, particularly for people who are sensitive to air pollution.

Where to Get Local Weather Information in Celsius

Atlanta weather sources generally show temperatures in Fahrenheit, but many services allow you to switch to Celsius.

Common options residents and visitors use include:

• Smartphones and weather apps: Most allow you to set the unit to °C in settings
• TV and local media: Television broadcasts typically present °F, but you can convert mentally or use a phone app alongside
• Home assistants and smart devices: Often respond in °C if you set your preference

You can also check updates from the National Weather Service Atlanta office, which serves the metro area and provides official watches, warnings, and advisories:

• National Weather Service – Forecast Office Peachtree City (serving Metro Atlanta)
  4 Falcon Drive, Peachtree City, GA 30269
  (This office supports Atlanta forecasts and severe weather alerts.)

For local emergency or weather-related questions (not life-threatening emergencies), many residents follow updates from:

• City of Atlanta and Fulton County emergency management offices
• Local news stations based in Atlanta that highlight storms, heat advisories, and winter weather impacts on roads and transit

Practical Tips for Living With Atlanta Weather in °C

Here’s a quick, Celsius-based guide to everyday decisions:

• Below 5 °C: You’ll want a coat or heavy jacket; watch for possible icy patches on bridges and overpasses in winter.
• 5–15 °C: Light to medium jacket weather; common in winter days and early spring mornings.
• 15–22 °C: Comfortable for most people; common in spring and fall—ideal for parks, walking the BeltLine, or outdoor dining.
• 22–28 °C: Warm but manageable; typical of late spring and early fall.
• 28–35 °C: Hot to very hot; typical Atlanta summer afternoons—seek shade, use AC, and plan strenuous activity for cooler times of day.

Understanding Atlanta’s weather in Celsius helps you pack correctly, plan your daily routine, and know what to expect whether you’re walking through Downtown, exploring Midtown and Piedmont Park, or heading out to Hartsfield–Jackson Atlanta International Airport.