Atlanta Hartsfield, GA Climate: Temperature & Rain by Month
Pulled from NOAA NCEI 1991–2020 normals →: climate measurements used in PlainClimate's documented score
30-year climate normals (1991-2020) from Atlanta Hartsfield's primary NOAA station, ATLANTA HARTSFIELD INTL AP.
The climate verdict for Atlanta Hartsfield
Water is the standout signal in Atlanta Hartsfield, Georgia: 50.4 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 64°F. It scores 87/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 87% of them.
- 64°F
- annual average temperature (NOAA normal)
- 87/100
- comfort score, above 87% of station-mapped location scores
- 50.4"
- annual precipitation · 2" snow
- 250 days
- frost-free growing season
Atlanta Hartsfield: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00013874 · Atlanta Hartsfield, GA 64°F mean · 50.4" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-WET · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,763
- PHOTO-FINISH ≈ Altus
- PRCP-WET 50.4"
- SWING-MID 36°F
- COMF-TOP 87/100
- LOAD-MIX H/C balanced
- STN-1 USW00013874
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Altus, OK (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every GA station list.
- Atlanta Hartsfi… (this station) 64°F
- Hot Cane Creek Stat…, AR 64°F
- Near Altus, OK 64°F
- Near Aspermont, TX 64°F
- Near Auburn, AL 64°F
Atlanta Hartsfield sits in Georgia, the #6 hottest U.S. state at 63.4°F statewide annual average - see all 50 hottest states ranked by NOAA normals
Climate Living Index · Atlanta Hartsfield
Atlanta Hartsfield: 73/100 · grade B
Atlanta Hartsfield publishes all six Living Index dimensions from NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals.
PlainClimate-derived for Atlanta Hartsfield, not an official NOAA rating. Rankings still use Comfort Score 87/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 28 calendar days | 96/100 · A |
| Frost-free season | 250 days/year | 89/100 · A |
| Annual temperature balance | 63.6°F · 3.9° from 67.5°F | 88/100 · A |
| Snowfall burden | 2.2 inches/year | 75/100 · B |
| Precipitation balance | 50.4 in · 15.4 from 35 in | 46/100 · D |
| Summer moisture balance | 67.3°F mean dew point | 25/100 · F |
Atlanta Hartsfield · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Atlanta Hartsfield is a temperate Köppen climate: Cfa
Coldest-month mean 44.8°F and warmest-month mean 80.9°F place this station in temperate, no dry season, hot summer climates (Cfa). Class Cfa is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: temperate, specifically temperate, no dry season, hot summer.
- Köppen code
- Cfa
- Group
- Temperate
- Warmest month
- 80.9°F
- Coldest month
- 44.8°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · balanced station
Where Atlanta Hartsfield sits across the climate record
Three NOAA fields for Atlanta Hartsfield's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 16% warmest
- Among 6,861 stations, Atlanta Hartsfield sits in the warmer third of annual means.
- Annual precipitation
- Top 19% wettest
- Atlanta Hartsfield's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 79%
- Warmest-to-coldest month gap for Atlanta Hartsfield is compact versus 6,861 complete station-years.
How Atlanta Hartsfield compares across U.S. station-mapped locations
Atlanta Hartsfield's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
87 Top 13% score exceeds 87% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Atlanta Hartsfield's measured station temperature trend
MethodologyAcross 84 complete annual observations from 1932 to 2025, ATLANTA HARTSFIELD INTL AP warmed at a fitted rate of 0.18°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Atlanta Hartsfield primary station fitted change +0.18 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 54°F (12°C) | 36°F (2°C) | 45°F (7°C) | 4.6" | 1.0" | 12.8 | 0.0 |
| February | 58°F (15°C) | 39°F (4°C) | 49°F (9°C) | 4.5" | 0.4" | 7.7 | 0.0 |
| March | 66°F (19°C) | 45°F (7°C) | 56°F (13°C) | 4.7" | 0.4" | 3.0 | 0.0 |
| April | 74°F (23°C) | 53°F (11°C) | 63°F (17°C) | 3.8" | 0.0" | 0.2 | 0.0 |
| May | 81°F (27°C) | 61°F (16°C) | 71°F (22°C) | 3.6" | 0.0" | 0.0 | 2.0 |
| June | 87°F (31°C) | 69°F (20°C) | 78°F (26°C) | 4.5" | 0.0" | 0.0 | 9.9 |
| July | 90°F (32°C) | 72°F (22°C) | 81°F (27°C) | 4.8" | 0.0" | 0.0 | 16.4 |
| August | 89°F (32°C) | 71°F (22°C) | 80°F (27°C) | 4.3" | 0.0" | 0.0 | 13.7 |
| September | 84°F (29°C) | 66°F (19°C) | 75°F (24°C) | 3.8" | 0.0" | 0.0 | 4.9 |
| October | 74°F (24°C) | 55°F (13°C) | 65°F (18°C) | 3.3" | 0.0" | 0.1 | 0.3 |
| November | 64°F (18°C) | 44°F (7°C) | 54°F (12°C) | 4.0" | 0.0" | 2.9 | 0.0 |
| December | 56°F (13°C) | 38°F (4°C) | 47°F (8°C) | 4.6" | 0.4" | 9.1 | 0.0 |
The year, day by day
The year in Atlanta Hartsfield runs from a mild 35°F around January 17 to 90°F at the peak near July 19, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from July 9 through August 5, covering 28 dates. The broader mild season, normal highs of 70°F or more, runs April 1 to October 28.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 35°F around January 17.
Where the wet dates fall
The likeliest wet date is July 4, when 38% of years recorded at least a hundredth of an inch. The driest is September 30 at 23%. Summed across the calendar, that is about 116 wet dates a year.
The widest day
April 8 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Atlanta Hartsfield.
Where Atlanta Hartsfield Stands Nationally
The normal water year runs well above the national norm at roughly 50 inches.
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Atlanta Hartsfield earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 1.0"
11.1 days with precipitation
Snow: 0.4"
10.4 days with precipitation
Snow: 0.4"
10.5 days with precipitation
8.9 days with precipitation
9.4 days with precipitation
11.1 days with precipitation
12.0 days with precipitation
10.2 days with precipitation
7.3 days with precipitation
6.8 days with precipitation
7.9 days with precipitation
Snow: 0.4"
10.7 days with precipitation
Atlanta Hartsfield spreads its precipitation across the year
Neither half of the year dominates here: June through August take 27% of the annual total and December through February 27%, with neither reaching the 35% that would mark a distinct wet season. Atlanta Hartsfield has no dry season to plan around, though it does carry a 36.1°F seasonal spread.
The gap between the wettest and driest month still matters: July averages 4.8" and October 3.3". The three wettest months together take 28% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
When it rains in Atlanta Hartsfield, it arrives in quantity
50.4" of precipitation falls across only about 116 wet days here, averaging 0.43 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 116 a year, 32% of all days
- Average depth per wet day
- 0.43 inches
- Most wet days
- July, about 12
- Fewest wet days
- October, about 7
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Snow reaches Atlanta Hartsfield, but rarely amounts to much
The normals record 2.2 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 2 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
November 20
50% probability date
Last Spring Freeze
March 15
50% probability date
Growing Season
250 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,531
Higher = more heating needed
Cooling Degree Days
2,051
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 61% | 9.2 | 20% | 33% |
| February | 60% | 9.5 | 20% | 33% |
| March | 59% | 8.9 | 21% | 27% |
| April | 63% | 8.3 | 20% | 22% |
| May | 67% | 7.4 | 13% | 20% |
| June | 69% | 7.1 | 14% | 20% |
| July | 70% | 6.7 | 12% | 16% |
| August | 69% | 7.0 | 16% | 18% |
| September | 68% | 7.9 | 27% | 20% |
| October | 67% | 7.7 | 32% | 21% |
| November | 65% | 8.3 | 25% | 27% |
| December | 67% | 8.9 | 19% | 36% |
Nationwide similar cities
Other rankable U.S. places outside GA closest to Atlanta Hartsfield on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (64°F here).
- Altus, OK 64°F · 0.0°F off
- Aspermont, TX 64°F · 0.0°F off
- Auburn, AL 64°F · 0.0°F off
- Cleveland, MS 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (50.4" here), excluding temperature-peer places.
- Harrison, NJ 50.4" · 0.0" off
- Henderson, TX 50.4" · 0.0" off
- Holly Hill, SC 50.5" · 0.0" off
- Raleigh, NC 50.5" · 0.0" off
Data-derived climate profile
How Atlanta Hartsfield's climate pattern fits together
mixed demand · wet · mid swing
Water is prominent even though neither heating nor cooling wholly defines the record. Atlanta Hartsfield averages 50.4 inches of precipitation a year. Annual snowfall totals 2.2 inches. The monthly table supplies the seasonal distribution hidden by that annual total.
July and January mark the typical warm and cold ends of the calendar in Atlanta Hartsfield's middle-range seasonal profile. The measured spread is 36.1°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Atlanta Hartsfield's normal, at 2,531 and 2,051 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
The frost-free window extends for about 250 days. That is a long calendar measure, but it is not a forecast and does not combine heat, rainfall, soil, or local elevation into a planting recommendation.
These labels group NOAA 1991-2020 normals from Atlanta Hartsfield's primary station, where heating and cooling demand are close enough that neither season sets the character on its own. On a balanced station like Atlanta Hartsfield, the bands are descriptive ranges rather than an official NOAA classification or a forecast.
Questions about Atlanta Hartsfield's climate
How much rain does Atlanta Hartsfield get? ▼
How many days above 90°F does Atlanta Hartsfield get? ▼
How much energy does heating and cooling require in Atlanta Hartsfield? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Atlanta Hartsfield's primary station: ATLANTA HARTSFIELD INTL AP (USW00013874). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Atlanta Hartsfield; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Atlanta Hartsfield comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.