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Template:Atlanta weatherbox

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Climate data for Atlanta (Hartsfield–Jackson Int'l), 1991–2020 normals,[a] extremes 1878–present[b]
Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
Record high °F (°C) 79
(26)
81
(27)
89
(32)
93
(34)
97
(36)
106
(41)
105
(41)
104
(40)
102
(39)
98
(37)
84
(29)
79
(26)
106
(41)
Mean maximum °F (°C) 70.3
(21.3)
73.5
(23.1)
80.8
(27.1)
84.7
(29.3)
89.6
(32.0)
94.3
(34.6)
95.8
(35.4)
95.9
(35.5)
91.9
(33.3)
85.0
(29.4)
77.5
(25.3)
71.5
(21.9)
97.3
(36.3)
Mean daily maximum °F (°C) 54.0
(12.2)
58.2
(14.6)
65.9
(18.8)
73.8
(23.2)
81.1
(27.3)
87.1
(30.6)
90.1
(32.3)
89.0
(31.7)
83.9
(28.8)
74.4
(23.6)
64.1
(17.8)
56.2
(13.4)
73.2
(22.9)
Daily mean °F (°C) 44.8
(7.1)
48.5
(9.2)
55.6
(13.1)
63.2
(17.3)
71.2
(21.8)
77.9
(25.5)
80.9
(27.2)
80.2
(26.8)
74.9
(23.8)
64.7
(18.2)
54.2
(12.3)
47.3
(8.5)
63.6
(17.6)
Mean daily minimum °F (°C) 35.6
(2.0)
38.9
(3.8)
45.3
(7.4)
52.5
(11.4)
61.3
(16.3)
68.6
(20.3)
71.8
(22.1)
71.3
(21.8)
65.9
(18.8)
54.9
(12.7)
44.2
(6.8)
38.4
(3.6)
54.1
(12.3)
Mean minimum °F (°C) 17.3
(−8.2)
23.2
(−4.9)
28.1
(−2.2)
36.9
(2.7)
47.6
(8.7)
59.9
(15.5)
65.6
(18.7)
64.5
(18.1)
53.4
(11.9)
38.7
(3.7)
29.2
(−1.6)
23.8
(−4.6)
15.2
(−9.3)
Record low °F (°C) −8
(−22)
−9
(−23)
10
(−12)
25
(−4)
37
(3)
39
(4)
53
(12)
55
(13)
36
(2)
28
(−2)
3
(−16)
0
(−18)
−9
(−23)
Average precipitation inches (mm) 4.59
(117)
4.55
(116)
4.68
(119)
3.81
(97)
3.56
(90)
4.54
(115)
4.75
(121)
4.30
(109)
3.82
(97)
3.28
(83)
3.98
(101)
4.57
(116)
50.43
(1,281)
Average snowfall inches (cm) 1.0
(2.5)
0.4
(1.0)
0.4
(1.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.0
(0.0)
0.4
(1.0)
2.2
(5.6)
Average precipitation days (≥ 0.01 in) 11.1 10.4 10.5 8.9 9.4 11.1 12.0 10.2 7.3 6.8 7.9 10.7 116.3
Average snowy days (≥ 0.01 in) 0.7 0.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.4 1.5
Average relative humidity (%) 67.6 63.4 62.4 61.0 67.2 69.8 74.4 74.8 73.9 68.5 68.1 68.4 68.3
Average dew point °F (°C) 29.3
(−1.5)
30.9
(−0.6)
38.5
(3.6)
45.7
(7.6)
56.1
(13.4)
63.7
(17.6)
67.8
(19.9)
67.5
(19.7)
62.1
(16.7)
49.6
(9.8)
41.0
(5.0)
33.1
(0.6)
48.8
(9.3)
Mean monthly sunshine hours 164.0 171.7 220.5 261.2 288.6 284.8 273.8 258.6 227.5 238.5 185.1 164.0 2,738.3
Percent possible sunshine 52 56 59 67 67 66 63 62 61 68 59 53 62
Average ultraviolet index 2.8 4.1 6.1 7.9 9.1 9.7 9.9 9.2 7.4 5.2 3.3 2.5 6.4
Source 1: NOAA (relative humidity, dew point and sun 1961–1990)[2][3][4]
Source 2: Extremes[5] UV Index Today (1995 to 2022)[6]

Notes

[edit]
  1. ^ Mean monthly maxima and minima (i.e. the highest and lowest temperature readings during an entire month or year) calculated based on data at said location from 1991 to 2020.
  2. ^ Official records for Atlanta were kept at the Weather Bureau in downtown from October 1878 to August 1928, and at Hartsfield–Jackson Int'l since September 1928.[1]

References

[edit]
  1. ^ ThreadEx
  2. ^ "Summary of Monthly Normals 1991–2020". National Oceanic and Atmospheric Administration. Archived from the original on May 4, 2021. Retrieved May 4, 2021.
  3. ^ "NowData – NOAA Online Weather Data". National Oceanic and Atmospheric Administration. Retrieved May 4, 2021.
  4. ^ "WMO Climatological Normals of Atlanta/Hartsfield INTL AP, GA". National Oceanic and Atmospheric Administration. Retrieved July 18, 2020.
  5. ^ "Climatological Normals (CLINO) . for the Period 1961-1990" (PDF). World Meteorological Orgniaztion. 1996. pp. 435, 440. ISBN 92-63-0084 7-7. Retrieved 23 April 2024. Atlanta/Mun. GA 72219
  6. ^ "Historical UV Index Data - Atlanta, GA". UV Index Today. Retrieved April 20, 2023.