Weather in Atlanta in Celsius: What Temperatures Really Feel Like Year-Round

If you live in Atlanta, Georgia, or you’re planning a visit, knowing the weather in Celsius can make packing, commuting, and planning outdoor plans much easier. Atlanta’s climate is generally described as humid subtropical, which means hot, humid summers and mild, sometimes chilly winters, with plenty of warm days in between.

Below is a clear, Celsius-based guide to what you can expect from Atlanta weather, season by season, plus tips for daily life, commuting, and staying comfortable.

Quick Overview: Atlanta Temperatures in Celsius

Typical daytime high temperatures in Atlanta (annual range):

These are general patterns, not forecasts. Actual temperatures can be a bit higher or lower on any given day.

Understanding Atlanta Weather in Celsius

Atlanta’s weather is shaped by its Southeastern U.S. location and its slightly higher elevation compared with some nearby cities. You’ll see:

• Frequent swings in temperature in late fall, winter, and early spring
• Strong humidity from late spring through early fall
• Occasional storms, especially in summer afternoons

When you convert everything to Celsius, the weather is easier to compare with many international cities.

Winter in Atlanta (December–February)

Winter in Atlanta is usually cool, not brutally cold, but it can still dip below freezing at times.

Typical Winter Temperatures in Celsius

• Daytime highs: about 8–13 °C
• Overnight lows: about 0–5 °C
• Cold snaps can bring temperatures below 0 °C, especially overnight

Snow is infrequent but possible. More common are cold rain and a few frosty mornings. Ice can occasionally form on bridges and overpasses.

What to Wear and Expect

If you live in or are visiting Atlanta in winter:

• Bring layers: a light sweater, plus a medium-weight jacket or coat
• Add gloves, a hat, and a scarf for nights near or below 0 °C
• Expect some rainy, gray days around 5–10 °C

⚠️ Local tip: Even small amounts of snow or ice can disrupt traffic and public services briefly, since Atlanta does not get heavy winter weather often.

Spring in Atlanta (March–May)

Spring is one of the most comfortable times to be in Atlanta when viewed in °C.

Typical Spring Temperatures in Celsius

• March highs: around 16–20 °C, lows 6–10 °C
• April highs: around 20–24 °C, lows 10–14 °C
• May highs: around 24–28 °C, lows 14–18 °C

You can go from a chilly morning near 8 °C to a warm afternoon over 24 °C in the same day.

What It Feels Like Around the City

Spring is ideal for:

• Walking the Atlanta BeltLine
• Visiting Piedmont Park or Grant Park
• Outdoor dining in Midtown, Inman Park, or West Midtown

You’ll want light layers you can remove by midday as the sun warms things into the low-to-mid 20s °C. Showers and thunderstorms are not unusual, but long cold stretches are less common by late spring.

Summer in Atlanta (June–August)

Summer is where Celsius really helps—because the temperatures are high, and humidity makes it feel even hotter.

Typical Summer Temperatures in Celsius

• Daytime highs: usually 29–34 °C
• Overnight lows: usually 20–24 °C

On the hottest days, temperatures can push 35+ °C, especially in late July and early August. When humidity is high, it can feel like temperatures are several degrees hotter than the actual reading.

Daily Life in Atlanta Summer Heat

If you’re out in Atlanta in summer:

• Expect many days around 30–32 °C by early afternoon
• Air conditioning is common in homes, MARTA trains, shops, and offices
• Thunderstorms often develop in late afternoon, briefly cooling things off

Practical tips:

• Dress in light, breathable fabrics
• Plan long walks or runs in the early morning or later evening
• Keep water handy if you’re exploring places like Downtown, Midtown, or Buckhead on foot

Parking lots, sidewalks, and roads can feel much hotter than the stated 30+ °C due to heat radiating from concrete and asphalt.

Fall in Atlanta (September–November)

Fall is another comfortable season, especially once you get into October and November.

Typical Fall Temperatures in Celsius

• Early fall (September): highs 27–30 °C, lows 18–21 °C
• Mid-fall (October): highs 22–26 °C, lows 12–15 °C
• Late fall (November): highs 15–20 °C, lows 6–10 °C

The humidity generally drops as the season goes on, making the air feel crisper and drier.

How Fall Feels Across Atlanta

Early fall can still feel like summer, with warm days over 27 °C. By late fall, you’ll want:

• A light jacket for evenings around 8–12 °C
• Long sleeves or a sweater for cooler days near 15–18 °C

It’s a popular time for outdoor events, festivals, and football games, because the upper teens to low 20s °C are comfortable for most people.

Rain, Storms, and Humidity in Celsius Terms

Rainfall and Storms

Atlanta sees regular rainfall spread across the year, with:

• Many summer afternoons having brief storms when it’s around 28–32 °C
• Occasional thunderstorms in spring and fall
• Winter rain often falling when temperatures are around 5–10 °C

Storms can bring gusty winds and lightning, so it’s common for locals to quickly check a weather app before heading out.

Humidity and “Feels Like” Temperatures

In late spring through early fall, you’ll hear people say it “feels hotter than it is.” That’s humidity. For example:

• A temperature of 31 °C on a humid July day might feel closer to 35–38 °C
• Conversely, a dry 15 °C day in fall can feel fresh and comfortable

When you see “feels like” temperatures in apps, they’re usually higher than the actual Celsius reading in Atlanta’s humid months.

How to Quickly Convert Atlanta Temperatures to Celsius

If you’re used to Fahrenheit (which is commonly used locally in Atlanta) but want to think in Celsius, these approximate conversions help:

• 10 °C ≈ 50 °F – cool, light jacket
• 20 °C ≈ 68 °F – mild and comfortable
• 25 °C ≈ 77 °F – warm
• 30 °C ≈ 86 °F – hot
• 35 °C ≈ 95 °F – very hot

A rough mental formula if you see °F:

• Subtract 32, then divide by 2, and adjust slightly
  • Example: 86 °F → (86 − 32) = 54 → about 27 °C (actual: 30 °C, but it gives you a ballpark)

Microclimates Within Atlanta

Within the City of Atlanta and surrounding metro, temperatures in Celsius are usually similar, but you might notice small differences:

• Downtown / Midtown:
  Slightly warmer at night—concrete and buildings hold heat, so a night temperature might stay near 22–24 °C in summer.
• Suburban and wooded areas (e.g., parts of DeKalb, Cobb, or northern Fulton):
  Can be 1–2 °C cooler at night, especially in winter and fall.
• Higher elevations north of the city:
  Occasionally a bit cooler, especially on clear nights.

These differences matter if you’re comparing an airport reading to what you feel at home or on a specific trail.

Planning Activities in Atlanta Around Celsius Temperatures

Here’s how Atlanta’s typical Celsius temperatures align with common plans:

Outdoor Activities

• 8–15 °C:
  Good for jogging on the BeltLine, hiking around Stone Mountain Park, or walking in Piedmont Park with a light jacket.
• 16–24 °C:
  Ideal for patio dining, outdoor festivals, and exploring neighborhoods like Virginia-Highland, Old Fourth Ward, and West Midtown.
• 25–32 °C:
  Fine for outdoor time if you pace yourself and stay hydrated. Popular for visits to Atlanta Botanical Garden or Zoo Atlanta, especially in morning or late afternoon.
• Above 32 °C:
  Better for shorter outdoor stretches, with lots of breaks in shade or air conditioning.

Commuting and Transit

If you use MARTA buses or trains, or walk to stations in Atlanta:

• Summer mornings around 22–25 °C warm quickly to 30+ °C, so shade and light clothing help.
• Winter mornings can be near 0–4 °C, so gloves and layers make waiting at outdoor stops more comfortable.

Where Atlanta Weather Records Are Taken

Most official temperature readings for Atlanta are taken at or near Hartsfield–Jackson Atlanta International Airport, where instruments record temperatures in both Celsius (°C) and Fahrenheit (°F). Local news stations and weather services then share those readings citywide.

Because the airport sits slightly south of the city center, some in-town neighborhoods might feel a bit warmer or cooler at a given moment, but usually by only 1–2 °C.

Practical Summary: What Celsius Ranges to Expect in Atlanta

If you want a quick mental map of Atlanta weather in Celsius:

• Winter:
  Around 0–12 °C, with cold nights and cool days
• Spring:
  Around 8–26 °C, shifting from cool to warm
• Summer:
  Around 20–34 °C, hot and humid, often feeling hotter
• Fall:
  Around 8–27 °C, warm early, pleasantly cool later

Knowing these ranges makes it easier to pack the right clothes, plan your day, and understand forecasts whether your phone shows Celsius or Fahrenheit while you’re in Atlanta.