Atlanta, Georgia climate: Normal weather by month, frost dates and records
Atlanta's normal year runs from 36°F January nights to 90°F July afternoons, with 50.4 inches of precipitation and 2 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.6°C, January lows of 2°C, July highs of 32°C, 1,281 mm of precipitation a year.
- NOAA stationAtlanta Hartsfield International Airport
- Station IDUSW00013874
- Location33.63°N 84.44°W
- Elevation1,010 ft (308 m)
- From the center9 miles
- Population520,070
On October 23, the normal high in Atlanta is 72°F and the normal low 52°F, and the chance of measurable rain or snow is 23%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Atlanta.
- Jan 54° 36°
- Feb 58° 39°
- Mar 66° 45°
- Apr 74° 53°
- May 81° 61°
- Jun 87° 69°
- Jul 90° 72°
- Aug 89° 71°
- Sep 84° 66°
- Oct 74° 55°
- Nov 64° 44°
- Dec 56° 38°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Atlanta each month?
July is the warmest month, with normal highs of 90°F; January the coldest, with normal lows of 36°F. The most precipitation falls in July (4.75 in), the least in October (3.28 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 54°F | 36°F | 44.8°F | 4.59 | 1.0 | 11 | <1 | 13 | 10 h 10 min |
| February | 58°F | 39°F | 48.5°F | 4.55 | 0.4 | 10 | <1 | 8 | 11 h |
| March | 66°F | 45°F | 55.6°F | 4.68 | 0.4 | 11 | <1 | 3 | 11 h 50 min |
| April | 74°F | 53°F | 63.2°F | 3.81 | 0.0 | 9 | <1 | <1 | 13 h |
| May | 81°F | 61°F | 71.2°F | 3.56 | 0.0 | 9 | 2 | <1 | 13 h 50 min |
| June | 87°F | 69°F | 77.9°F | 4.54 | 0.0 | 11 | 10 | <1 | 14 h 20 min |
| July | 90°F | 72°F | 80.9°F | 4.75 | 0.0 | 12 | 16 | <1 | 14 h 10 min |
| August | 89°F | 71°F | 80.2°F | 4.30 | 0.0 | 10 | 14 | <1 | 13 h 30 min |
| September | 84°F | 66°F | 74.9°F | 3.82 | 0.0 | 7 | 5 | <1 | 12 h 30 min |
| October | 74°F | 55°F | 64.7°F | 3.28 | 0.0 | 7 | <1 | <1 | 11 h 20 min |
| November | 64°F | 44°F | 54.2°F | 3.98 | 0.0 | 8 | <1 | 3 | 10 h 30 min |
| December | 56°F | 38°F | 47.3°F | 4.57 | 0.4 | 11 | <1 | 9 | 10 h |
| Year (annual) | 73°F | 54°F | 63.6°F | 50.43 | 2.2 | 116 | 47 | 36 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 12°C | 2°C | 7.1°C | 117 mm | 3 cm |
| February | 15°C | 4°C | 9.2°C | 116 mm | 1 cm |
| March | 19°C | 7°C | 13.1°C | 119 mm | 1 cm |
| April | 23°C | 11°C | 17.3°C | 97 mm | 0 cm |
| May | 27°C | 16°C | 21.8°C | 90 mm | 0 cm |
| June | 31°C | 20°C | 25.5°C | 115 mm | 0 cm |
| July | 32°C | 22°C | 27.2°C | 121 mm | 0 cm |
| August | 32°C | 22°C | 26.8°C | 109 mm | 0 cm |
| September | 29°C | 19°C | 23.8°C | 97 mm | 0 cm |
| October | 24°C | 13°C | 18.2°C | 83 mm | 0 cm |
| November | 18°C | 7°C | 12.3°C | 101 mm | 0 cm |
| December | 13°C | 4°C | 8.5°C | 116 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013874; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Atlanta?
Normal highs sit between 65°F and 85°F in March, April, May, September and October. Of those, October has the fewest days with rain (7).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013874.
When is the last frost in Atlanta?
In Atlanta, the last spring frost (32°F) comes after March 15 in half of years and after April 4 in one year in ten; the first autumn frost comes before November 20 in half of years and before November 4 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- March 151 year in 10 after April 4; 9 in 10 after February 23
- First autumn frost, half of years before
- November 201 year in 10 before November 4; 9 in 10 before December 10
NOAA puts the median frost-free season at 252 days, and the season without a hard freeze (28°F) at 281 days.
A hard freeze (28°F) comes after February 28 in half of springs and before December 5 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Atlanta in zone 8a across its 24 ZIP code areas (8a in 30318, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Atlanta's NOAA station is in zone 8b: the coldest night of a typical year reaches 15°F (30 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Georgia · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00013874; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
What hardiness zone is each Atlanta ZIP code in?
The USDA's 2023 map gives each ZIP code area one zone. Atlanta's 24 ZIP code areas are all in zone 8a. Each ZIP's frost dates are in the frost tool.
| ZIP code | Zone | Land in Atlanta |
|---|---|---|
| 30303 | 8a | 2.7 km² |
| 30305 | 8a | 16.8 km² |
| 30306 | 8a | 8.8 km² |
| 30307 | 8a | 7.3 km² |
| 30308 | 8a | 4.1 km² |
| 30309 | 8a | 8.6 km² |
| 30310 | 8a | 22.3 km² |
| 30311 | 8a | 32.1 km² |
| 30312 | 8a | 8.6 km² |
| 30313 | 8a | 3.0 km² |
| 30314 | 8a | 11.8 km² |
| 30315 | 8a | 29.5 km² |
| 30316 | 8a | 9.8 km² |
| 30317 | 8a | 8.2 km² |
| 30318 | 8a | 52.6 km² |
| 30319 | 8a | 2.9 km² |
| 30322 | 8a | 1.2 km² |
| 30324 | 8a | 10.3 km² |
| 30326 | 8a | 1.9 km² |
| 30327 | 8a | 28.8 km² |
| 30331 | 8a | 48.0 km² |
| 30342 | 8a | 10.6 km² |
| 30354 | 8a | 17.5 km² |
| 30363 | 8a | 0.6 km² |
Source: USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; ZIP areas in the place: Census Bureau 2020 ZCTA-to-place relationship file. A ZIP area counts when at least a tenth of its land (and 0.5 km²) lies in the place.
How hot and how cold does it get in Atlanta?
In a normal year in Atlanta, 47 days a year reach 90°F (1 of them 100°F or more), 36 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 47a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 36a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
- Days with 1 inch of snow or more
- 1a normal year
The highest temperature in Atlanta's official record (kept by the National Weather Service since 1878) is 106°F, on June 30, 2012; the lowest is −9°F, on February 13, 1899.
The wettest calendar year on that record is 1948, with 71.45 in; the snowiest season is 1935–36, with 10.9 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00013874; records: ACIS (NOAA Regional Climate Centers), NWS threaded record ATLthr. Records use complete months only; a month missing more than three days is left out.
How humid and windy is Atlanta, and how clear are its skies?
The summer (June-August) dew point averages 67°F. The muggiest month is July, with an average dew point of 69°F, above the 65°F at which most people call the air sticky; the driest air comes in January (32°F). February is the windiest month (9.5 mph on average), and October has the most clear or nearly clear hours (51%).
| Month | Dew point | Humidity | Afternoon humidity | Wind | Clear or few clouds | Overcast |
|---|---|---|---|---|---|---|
| January | 32°F | 61% | 45% | 9.2 mph | 37% | 33% |
| February | 37°F | 60% | 45% | 9.5 mph | 36% | 33% |
| March | 44°F | 59% | 43% | 8.9 mph | 38% | 27% |
| April | 52°F | 63% | 46% | 8.3 mph | 40% | 22% |
| May | 62°F | 67% | 50% | 7.4 mph | 31% | 20% |
| June | 67°F | 69% | 52% | 7.1 mph | 31% | 20% |
| July | 69°F | 70% | 53% | 6.7 mph | 31% | 16% |
| August | 66°F | 69% | 52% | 7.0 mph | 35% | 18% |
| September | 58°F | 68% | 50% | 7.9 mph | 48% | 20% |
| October | 47°F | 67% | 47% | 7.7 mph | 51% | 21% |
| November | 38°F | 65% | 48% | 8.3 mph | 42% | 27% |
| December | 34°F | 67% | 52% | 8.9 mph | 34% | 36% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00013874. Monthly averages of all hours; afternoon humidity at 3 p.m. local standard time; sky as the share of hours NOAA's observations rate clear or few clouds (a dash where NOAA publishes no sky value).
How sunny is Atlanta?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Atlanta, 4.5 kWh per square metre a day. July is the sunniest month (80%) and February the cloudiest (69%). Among the 459 U.S. places of 50,000 or more, that ranks tied 243rd (with 32 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 73% | 2.8 |
| February | 69% | 3.3 |
| March | 73% | 4.4 |
| April | 78% | 5.6 |
| May | 80% | 6.2 |
| June | 79% | 6.2 |
| July | 80% | 6.0 |
| August | 80% | 5.5 |
| September | 79% | 4.8 |
| October | 78% | 4.0 |
| November | 78% | 3.1 |
| December | 70% | 2.4 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Atlanta need?
A normal year in Atlanta brings 2,531 heating degree days, 53% fewer than the median U.S. place (5,373), and 2,051 cooling degree days, 2.3 times the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,606 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 627 | 1 |
| February | 463 | 2 |
| March | 309 | 17 |
| April | 120 | 64 |
| May | 22 | 214 |
| June | 1 | 387 |
| July | 0 | 494 |
| August | 0 | 470 |
| September | 5 | 302 |
| October | 99 | 88 |
| November | 336 | 10 |
| December | 551 | 2 |
| Year (annual) | 2,531 | 2,051 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00013874. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Atlanta been warmer than normal lately?
2025 averaged 65.3°F, 1.7°F above the 1991-2020 normal of 63.6°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 64.5°F | +0.9°F | 53.81 | 0.0 |
| 2022 | 64.6°F | +1.0°F | 48.15 | 0.6 |
| 2023 | 65.9°F | +2.3°F | 41.04 | 0.0 |
| 2024 | 66.2°F | +2.6°F | 63.18 | 0.0 |
| 2025 | 65.3°F | +1.7°F | 41.63 | – |
Over 84 complete years from 1932 to 2025, the station's annual mean temperature rose at a fitted 3.2°F per century (+0.18°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00013874; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Atlanta's climate compare?
Atlanta is warmer than 49 of the other 100 places with their own NOAA record in Georgia, and wetter than 38. Across the 7,247 U.S. stations with normals, its annual mean of 63.6°F is warmer than 84%.
In the Köppen classification computed from these normals, Atlanta is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Atlanta share this climate record?
10 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- South Fulton, GAalso near: Jonesboro (15 mi, 61.7°F a year); Mableton (15 mi, 60.1°F a year)112,003 people · 8 mi W
- East Point, GA38,270 people · 3 mi NW
- Union City, GA28,195 people · 7 mi W
- Forest Park, GA19,301 people · 5 mi E
- Fairburn, GA17,267 people · 10 mi SW
- College Park, GA13,953 people · 1 mi NW
- Panthersville, GA8,840 people · 11 mi NE
- Gresham Park, GA7,544 people · 9 mi NE
- Hapeville, GA6,712 people · 3 mi NE
- Conley, GA5,404 people · 6 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Atlanta's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Atlanta. This page uses Atlanta Hartsfield International Airport; the other differs by site and elevation:
| Station | From the center | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Atlanta Fulton County Airport USW00003888 | 6 mi W | 840 ft | 62.3°F | 34°F | 90°F | 48.1 | – | March 24 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Atlanta's climate
What is the coldest month in Atlanta?
January, with a normal high of 54°F and a normal low of 36°F. The warmest is July (90°F by day, 72°F at night).
Does it snow in Atlanta?
Yes: 2 inches in a normal year, falling on 2 days with 0.1 inch or more, the most in January (1.0 inches).
What is the rainiest month in Atlanta?
July, with 4.75 in of precipitation in a normal year; the driest is October with 3.28 in.
What plant hardiness zone is Atlanta in?
The USDA's 2023 map puts Atlanta in zone 8a across its 24 ZIP code areas (8a in 30318, the largest). By the same method at Atlanta's NOAA station, the coldest night of a typical year reaches 15°F (30 years, 1991-2020): zone 8b.
How late can frost come in Atlanta?
In half of years the last 32°F night comes after March 15; in one year in ten it comes after April 4. Waiting until April 4 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Atlanta in OctoberThis month day by day, its records and recent years
- Georgia climateThe statewide normals and every place in the state
- Jonesboro, GA9 miles from this station, 61.7°F a year
- Mableton, GA17 miles from this station, 60.1°F a year
- Chamblee, GA19 miles from this station, 61.5°F a year
- Peachtree City, GA20 miles from this station, 63.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made