Alpharetta, Georgia, United States Climate

Weather: 4.75°C/40.55°F, Wind SW at 1.28 km/h, 91% Humidity, 0% Chance of rain

United States
(Photo by Nikita Dobrynin on Unsplash)
Contents

Alpharetta Climate Summary

Located at an elevation of 344.71 meters (1130.94 feet) above sea level, Alpharetta has a Humid subtropical, no dry season climate (Classification: Cfa). The district’s yearly temperature is 19.13ºC (66.43ºF) and it is 6.49% higher than United States’s averages. Alpharetta typically receives about 44.84 millimeters (1.77 inches) of precipitation and has 49.28 rainy days (13.5% of the time) annually.

CountryUnited States
CityGeorgia
Longitude-84.2940899
Latitude34.0753762
Attitude/Elevation344.71m (1130.94ft)
Local timeTuesday 12:31
Annual high temperature22.49ºC (72.48ºF)
Annual low temperature14.32ºC (57.78ºF)
Average annual precip.44.84mm (1.77in)
Warmest monthJuly (33.15ºC / 91.67ºF)
Coldest MonthJanuary (2.94ºC / 37.29ºF)
Wettest MonthJuly (74.68mm / 2.94in)
Driest MonthOctober (25.32mm / 1.0in)
Number of days with rainfall (≥ 1.0 mm)49.28 days (13.5%)
Days with no rain315.72 days (86.5%)
Humidity63.35%

Climate Alpharetta: Weather By Month

MonthJanFebMarAprMayJunJulAugSepNovOctDecYear
Record high °C (°F)20.0(68.0)25.0(77.0)28.0(82.4)31.0(87.8)35.0(95.0)37.0(98.6)37.0(98.6)38.0(100.4)38.0(100.4)35.0(95.0)26.0(78.8)21.0(69.8)38.0(100.4)
Average high °C (°F)9.94(49.89)14.6(58.28)16.92(62.46)22.06(71.71)28.16(82.69)31.21(88.18)33.15(91.67)32.38(90.28)30.29(86.52)23.97(75.15)15.74(60.33)11.51(52.72)22.49(72.48)
Daily mean °C (°F)7.02(44.64)11.55(52.79)13.46(56.23)18.12(64.62)24.52(76.14)27.76(81.97)29.59(85.26)28.73(83.71)26.86(80.35)20.6(69.08)12.63(54.73)8.73(47.71)19.13(66.43)
Average low °C (°F)2.94(37.29)7.36(45.25)8.75(47.75)12.19(53.94)19.08(66.34)22.18(71.92)24.22(75.6)23.69(74.64)21.93(71.47)15.96(60.73)8.29(46.92)5.26(41.47)14.32(57.78)
Record low °C (°F)-8.0(17.6)-3.0(26.6)-3.0(26.6)2.0(35.6)6.0(42.8)15.0(59.0)20.0(68.0)19.0(66.2)12.0(53.6)4.0(39.2)-2.0(28.4)-3.0(26.6)-8.0(17.6)
Average precipitation mm (inches)25.92(1.02)46.91(1.85)32.49(1.28)50.04(1.97)52.26(2.06)50.48(1.99)74.68(2.94)63.7(2.51)53.2(2.09)25.32(1.0)25.5(1.0)37.6(1.48)44.84(1.77)
Average precipitation days (≥ 1.0 mm)3.184.733.822.644.915.556.275.733.913.362.272.914.11
Average relative humidity (%)63.8873.2162.8657.4360.2461.0460.0461.4162.2464.064.0669.7463.35
Mean monthly sunshine hours8.588.079.110.4710.7610.9411.0310.6410.419.898.98.229.75

Climate Graph

The chart below shows the mean monthly temperature and precipitation of Alpharetta in recent years.

Alpharetta

Alpharetta Temperature by Month

July
29.59°C | 85.26°F
August
28.73°C | 83.71°F
June
27.76°C | 81.97°F
September
26.86°C | 80.35°F
May
24.52°C | 76.14°F
October
20.6°C | 69.08°F
April
18.12°C | 64.62°F
March
13.46°C | 56.23°F
November
12.63°C | 54.73°F
February
11.55°C | 52.79°F
December
8.73°C | 47.71°F
January
7.02°C | 44.64°F

Historical Data

Summary
  • 2020
  • 2019
  • 2018
  • January
  • February
  • March
  • April
  • May
  • June
  • July
  • August
  • September
  • October
  • November
  • December
TemperatureMaxAverageMin
Max Temperature36.0°C (96.8°F)31.1°C (87.98°F)23.0°C (73.4°F)
Avg Temperature31.0°C (87.8°F)27.87°C (82.17°F)23.0°C (73.4°F)
Min Temperature24.0°C (75.2°F)22.9°C (73.22°F)21.0°C (69.8°F)
Dew PointMaxAverageMin
Dew Point21.0°C (69.8°F)19.47°C (67.05°F)17.0°C (62.6°F)
PrecipitationMaxAverageMinSum
Precipitation72.8mm | 2.87in11.42mm | 0.45in0.0mm | 0in342.6mm | 13.49in
Snowdepth0.0mm | 0in0.0mm | 0in0.0mm | 0in0.0mm | 0in
WindMaxAverageMin
Wind13.0kmh | 8.08mph7.27kmh | 4.52mph4.0kmh | 2.49mph
Gust Wind17.0kmh | 10.56mph9.97kmh | 6.2mph5.0kmh | 3.11mph
Sea Level PressureMaxAverageMin
Sea Level Pressure72.8mb11.42mb0.0mb
Alpharetta

Daily Observations

TimeTemperatureDew PointHumidityWind SpeedPressurePrecipitation
September° C | ° F° C | ° F%Kph | MphHg | MbTotal (mm/in)
2018-09-0129 | 84.220 | 68.0626 | 3.7330.15 | 10216.7 | 0.26
2018-09-0229 | 84.220 | 68.0629 | 5.5930.18 | 10222.9 | 0.11
2018-09-0329 | 84.220 | 68.06411 | 6.8430.21 | 10234.0 | 0.16
2018-09-0428 | 82.420 | 68.06910 | 6.2130.18 | 10222.8 | 0.11
2018-09-0528 | 82.420 | 68.0667 | 4.3530.15 | 10211.7 | 0.07
2018-09-0628 | 82.420 | 68.0677 | 4.3530.12 | 102019.8 | 0.78
2018-09-0730 | 86.019 | 66.2614 | 2.4930.06 | 10184.7 | 0.19
2018-09-0829 | 84.220 | 68.0644 | 2.4929.94 | 101419.1 | 0.75
2018-09-0929 | 84.220 | 68.0667 | 4.3529.88 | 101236.0 | 1.42
2018-09-1027 | 80.621 | 69.8734 | 2.4929.91 | 101372.8 | 2.87
2018-09-1128 | 82.421 | 69.8724 | 2.4930.0 | 101633.3 | 1.31
2018-09-1228 | 82.421 | 69.8726 | 3.7330.06 | 101829.6 | 1.17
2018-09-1329 | 84.221 | 69.8707 | 4.3530.03 | 101710.0 | 0.39
2018-09-1431 | 87.820 | 68.0627 | 4.3529.94 | 10145.9 | 0.23
2018-09-1529 | 84.219 | 66.2629 | 5.5929.88 | 10122.2 | 0.09
2018-09-1623 | 73.419 | 66.27911 | 6.8429.83 | 10107.4 | 0.29
2018-09-1728 | 82.419 | 66.2698 | 4.9729.91 | 10130.5 | 0.02
2018-09-1829 | 84.218 | 64.4607 | 4.3529.94 | 10140.0 | 0.0
2018-09-1931 | 87.818 | 64.4535 | 3.1129.97 | 10150.0 | 0.0
2018-09-2030 | 86.018 | 64.4547 | 4.3530.06 | 10180.0 | 0.0
2018-09-2129 | 84.218 | 64.4587 | 4.3530.12 | 10200.0 | 0.0
2018-09-2229 | 84.219 | 66.2606 | 3.7330.06 | 10182.5 | 0.1
2018-09-2328 | 82.417 | 62.6577 | 4.3530.03 | 10170.4 | 0.02
2018-09-2424 | 75.219 | 66.27513 | 8.0830.09 | 10199.2 | 0.36
2018-09-2525 | 77.020 | 68.07910 | 6.2130.12 | 10204.2 | 0.17
2018-09-2626 | 78.820 | 68.0776 | 3.7330.06 | 101837.6 | 1.48
2018-09-2725 | 77.020 | 68.0809 | 5.5930.0 | 101617.4 | 0.69
2018-09-2826 | 78.819 | 66.2755 | 3.1130.06 | 10183.8 | 0.15
2018-09-2927 | 80.619 | 66.2685 | 3.1130.15 | 10215.4 | 0.21
2018-09-3025 | 77.019 | 66.27610 | 6.2130.21 | 10232.7 | 0.11

Alpharetta 3 Year Historical Weather Data

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