Hartsfield-Jackson Atlanta International

KATL · Georgia, United States

Climate Hartsfield-Jackson Atlanta International 2020-2024

Climate and trends: average temperature, flight conditions, precipitation, wind speed and direction.

Calculated from historical METAR data of Hartsfield-Jackson Atlanta International (KATL) between 2020 and 2024.

VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 73.4 68 64 77 73 72
February 68.0 88 72 71 59 58
March 77.9 68 79 77 83 67
April 84.8 86 75 87 95 84
May 84.4 83 76 82 90 86
June 88.2 94 81 92 84 90
July 91.1 95 88 91 92
August 86.6 90 84 86 84
September 86.6 86 86 83 77
October 80.4 87 86 80 79
November 77.7 77 74 93 76
December 67.8 72 49 66 75
Average 81.4 81.6 79.8 81.0 82.7 79.1

VFR conditions during daylight period

Percentage of observations where the VFR minimums for ceiling and visibility are met: visibility of 5 mi or more and a ceiling of 3,000 ft or more. Only observations between sunrise and sunset are taken into account.

Marginal VFR conditions (%)

Month Average 2024 2023 2022 2021 2020
January 86.2 81 81 89 88 86
February 81.5 95 87 82 71 77
March 88.7 80 88 87 91 82
April 92.1 93 84 93 98 92
May 94.0 93 93 94 96 94
June 94.7 98 91 95 93 97
July 96.5 98 95 96 97
August 93.6 94 91 94 92
September 93.9 96 92 91 89
October 90.8 94 92 92 91
November 89.5 93 88 98 88
December 80.8 85 65 83 90
Average 90.7 90.1 90.5 89.6 91.3 90.1

Marginal VFR conditions or better during daylight period

Percentage of observations where the MVFR minimums for ceiling and visibility are met: visibility of 3⅛ mi or more and a ceiling of 1,000 ft or more. Only observations between sunrise and sunset are taken into account.

Maximum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 13.1 12 16 13 12 14
February 17.1 18 19 17 14 15
March 19.7 20 20 21 21 21
April 23.2 24 23 23 23 22
May 27.3 28 26 28 26 26
June 30.2 32 29 32 30 29
July 31.8 33 32 31 32
August 31.2 33 30 31 31
September 29.2 29 28 28 27
October 24.0 24 23 24 24
November 17.8 18 18 18 20
December 14.3 15 14 18 13
Average 23.2 22.4 23.7 23.5 22.8 22.9

Average highest temperature per day

The maximum temperature is typically observed some hours after noon.

Minimum temperatures (°C)

Month Average 2024 2023 2022 2021 2020
January 3.9 2 7 2 4 6
February 7.3 7 9 6 5 6
March 9.4 10 9 9 10 12
April 12.5 14 13 12 12 11
May 17.6 19 17 18 16 15
June 21.1 22 20 22 21 20
July 22.8 23 23 22 23
August 22.5 23 22 23 23
September 20.1 20 19 19 19
October 14.4 14 11 16 15
November 8.0 9 10 6 10
December 6.0 6 8 9 3
Average 13.6 12.2 14.1 13.7 13.6 13.7

Average lowest temperature per day

The minimum temperature is typically observed just before sunrise.

Precipitation (%)

Month Average 2024 2023 2022 2021 2020
January 11.3 12 12 14 12 14
February 13.1 6 14 16 15 19
March 9.9 15 12 8 10 17
April 6.7 6 14 5 3 5
May 5.6 5 7 4 4 6
June 4.3 2 7 1 5 4
July 2.8 2 3 5 4
August 5.6 2 6 6 8
September 5.4 3 6 11 11
October 6.5 5 5 8 3
November 8.2 12 9 3 6
December 14.7 13 22 12 7
Average 7.5 7.6 8.2 7.3 7.4 8.3

Precipitation during daylight period

Percentage of observations with observed rain, drizzle, snow or hail. Only observations between sunrise and sunset are taken into account.

Wind speed (knots)

Month Average 2024 2023 2022 2021 2020
January 8.5 9 8 8 8 9
February 8.5 9 8 9 9 8
March 8.9 9 8 10 8 8
April 8.5 9 9 8 8 9
May 7.6 7 9 8 8 8
June 7.0 7 8 7 7 7
July 6.3 7 6 6 6
August 6.3 7 6 7 6
September 7.2 7 8 6 8
October 7.6 8 7 7 7
November 7.8 8 9 8 8
December 7.9 8 7 7 8
Average 7.7 8.2 7.8 7.7 7.2 7.7

Average wind speed

Excluding wind gusts. Only observations between sunrise and sunset are taken into account.

Prevailing wind direction

Month 2024 2023 2022 2021 2020
January 292° 267° 292° 296° 331°
February 278° 259° 290° 339° 272°
March 327° 267° 267° 095° 235°
April 254° 330° 243° 279° 293°
May 254° 056° 214° 232° 260°
June 151° 300° 336° 191° 265°
July 296° 247° 255° 273°
August 303° 215° 137° 231°
September 042° 038° 009° 065°
October 344° 332° 267° 069°
November 033° 032° 323° 019°
December 306° 133° 239° 305°

Prevailing wind direction

Average wind direction, weighed by wind speed. Only observations between sunrise and sunset are taken into account.