Alpharetta, GA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alpharetta, a city in Fulton County, Georgia.
Today
86°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 10am and 2pm, then showers and thunderstorms likely between 2pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 86. East wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Alpharetta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 86°F | Chance Showers And Thunderstorms | 5 mph E | 57% |
| Tonight | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph E | 49% |
| Wednesday | 87°F | Showers And Thunderstorms Likely | 0 to 5 mph SE | 73% |
| Wednesday Night | 70°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SE | 63% |
| Thursday | 89°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 71% |
| Thursday Night | 71°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SE | 71% |
| Friday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 45% |
| Friday Night | 71°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 45% |
| Saturday | 89°F | Chance Showers And Thunderstorms | 0 to 5 mph SE | 51% |
| Saturday Night | 71°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Sunday | 90°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Sunday Night | 72°F | Chance Showers And Thunderstorms | 0 mph | 51% |
| Monday | 90°F | Chance Showers And Thunderstorms | 0 to 5 mph NW | 41% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 41% |
Forecast source: National Weather Service (api.weather.gov) for Alpharetta (34.071, -84.273). Updated through the day.
Growing snapshot for Alpharetta
Last spring frost
Mar 25
First fall frost
Nov 9
Growing season
228 days
Hardiness zone
8a
More local growing data for Alpharetta: nearby ZIP 30009 weather · frost dates · planting calendar · Georgia frost dates
Nearby towns & communities
Atlanta
Chattahoochee Hills
College Park
Duluth
East Point
Fairburn
Hapeville
Johns Creek
Milton
Mountain Park
Palmetto
Roswell
Sandy Springs
South Fulton
Union City
Climate data from the nearest NOAA station, Atlanta Peachtree Ap, Ga (14 mi from Alpharetta). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.