Alpharetta, GA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Alpharetta, a city in Fulton County, Georgia.
Overnight
63°F
Chance Showers And Thunderstorms
A slight chance of rain showers between 1am and 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 63. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
7-day forecast for Alpharetta
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Chance Showers And Thunderstorms | 10 to 15 mph SE | 41% |
| Wednesday | 71°F | Showers And Thunderstorms | 5 to 15 mph SE | 88% |
| Wednesday Night | 63°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 69% |
| Thursday | 75°F | Slight Chance Rain Showers | 0 to 5 mph SW | 20% |
| Thursday Night | 55°F | Partly Cloudy then Slight Chance Rain Showers | 0 mph | 15% |
| Friday | 73°F | Slight Chance Rain Showers then Sunny | 0 to 10 mph NW | 15% |
| Friday Night | 48°F | Clear | 5 to 10 mph NW | 2% |
| Saturday | 69°F | Sunny | 5 to 10 mph NW | 0% |
| Saturday Night | 43°F | Partly Cloudy | 0 to 10 mph N | 0% |
| Sunday | 66°F | Mostly Sunny | 0 to 5 mph N | 0% |
| Sunday Night | 41°F | Mostly Clear | 5 mph NW | 1% |
| Monday | 65°F | Sunny | 5 mph NW | 1% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 mph NW | 1% |
| Tuesday | 67°F | Sunny | 0 to 5 mph NW | 3% |
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 Nov 4, 2026.