Alpharetta climate

Alpharetta Weather in August

NOAA 1991-2020 normals for Cumming 2N, 22.9 km from Alpharetta

Average highs run from 89°F on August 1 to 86°F on August 31, and lows from 68°F to 65°F. Normal precipitation for the month is 4.92 in over about 10 wet days.

August day by day

The normal high and low for each date, and the record, in °F.

Normal daily high and low temperature at Alpharetta, in °F, with the record for each date.5060708090100110151015202530
  • Normal low
  • Normal high
  • Record high
  • Record low

August at a glance

Average high
88°F
Average low
67°F
Precipitation
4.92 in
Record high
102°FAug 16, 2007
Record low
54°FAug 27, 2025
Chance of a freeze
0%
Days of 90°F or more
10.5
Daylight
13 h 49 min to 12 h 54 min
Cloud cover
54%
Humidity
70%
Dew point
66°F
Wind
4.3 mph

Every day of the month

A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.

DateNormal highNormal lowRecord highRecord lowChance wetChance of snow
Aug 189°F68°F99°F 200661°F 201736%0%
Aug 289°F68°F97°F 201166°F 201435%0%
Aug 389°F68°F100°F 201162°F 199835%0%
Aug 489°F68°F99°F 200664°F 202535%0%
Aug 589°F68°F100°F 201565°F 202535%0%
Aug 689°F68°F98°F 200863°F 201435%0%
Aug 789°F68°F97°F 200662°F 200435%0%
Aug 889°F68°F100°F 200659°F 200434%0%
Aug 989°F68°F100°F 200761°F 200434%0%
Aug 1089°F68°F100°F 200765°F 200434%0%
Aug 1189°F68°F98°F 200762°F 200434%0%
Aug 1289°F68°F98°F 199959°F 201233%0%
Aug 1389°F68°F99°F 199958°F 200433%0%
Aug 1488°F67°F98°F 200756°F 200433%0%
Aug 1588°F67°F101°F 200762°F 201433%0%
Aug 1688°F67°F102°F 200762°F 201332%0%
Aug 1788°F67°F100°F 200761°F 201332%0%
Aug 1888°F67°F101°F 200064°F 200432%0%
Aug 1988°F67°F99°F 199965°F 202331%0%
Aug 2088°F67°F97°F 200665°F 201231%0%
Aug 2188°F67°F100°F 200761°F 200131%0%
Aug 2288°F66°F102°F 200762°F 199830%0%
Aug 2388°F66°F98°F 200760°F 200930%0%
Aug 2487°F66°F96°F 200762°F 202430%0%
Aug 2587°F66°F97°F 202360°F 202429%0%
Aug 2687°F66°F99°F 201158°F 202529%0%
Aug 2787°F66°F94°F 199854°F 202529%0%
Aug 2887°F65°F96°F 202460°F 202528%0%
Aug 2987°F65°F98°F 202460°F 202528%0%
Aug 3086°F65°F95°F 202459°F 201928%0%
Aug 3186°F65°F93°F 201663°F 199928%0%

Chance of rain

The chance of at least 0.01 inch of precipitation on each date at Alpharetta, in percent, and of at least 0.1 inch of snowfall.0102030401102030
  • Chance of a wet day
  • Chance of snowfall

Sunrise and sunset

Times for 2026, local time (EDT).

August 1
sunrise 6:49 AM, sunset 8:38 PM
August 31
sunrise 7:10 AM, sunset 8:04 PM

Every day of August: sun and moon

Other months

Sources

Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00092408 (Cumming 2N), public domain. Records: NOAA GHCN-Daily, station USW00053863, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.