National Weather Service Forecast for: Alpharetta GA
Issued by: National Weather Service Peachtree City, GA
Updated: 1:12 pm EDT May 4, 2026
 
This
Afternoon
This Afternoon: Mostly sunny, with a high near 78. Southwest wind around 5 mph.
Mostly Sunny

 Tonight

Tonight: Mostly clear, with a low around 53. Southwest wind around 5 mph becoming calm in the evening.
Mostly Clear

 Tuesday

Tuesday: Mostly sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny

 Tuesday
Night
Tuesday Night: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 61. South wind 5 to 10 mph, with gusts as high as 15 mph.
Partly Cloudy
then Slight
Chance
Showers
 Wednesday

Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Slight Chance
Showers then
Chance
Showers
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 64. Chance of precipitation is 90%.
Showers

 Thursday

Thursday: Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. High near 73. Chance of precipitation is 80%.
Showers

 Thursday
Night
Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Chance
Showers

 Friday

Friday: A 20 percent chance of showers. Partly sunny, with a high near 70.
Slight Chance
Showers
Hi 78 °F Lo 53 °F Hi 80 °F Lo 61 °F Hi 82 °F Lo 64 °F Hi 73 °F Lo 49 °F Hi 70 °F

 

This Afternoon
 
 Mostly sunny, with a high near 78. Southwest wind around 5 mph.
Tonight
 
 Mostly clear, with a low around 53. Southwest wind around 5 mph becoming calm in the evening.
Tuesday
 
 Mostly sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
 
 A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 61. South wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday
 
 A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 64. Chance of precipitation is 90%.
Thursday
 
 Showers and possibly a thunderstorm before 2pm, then a chance of showers and thunderstorms after 2pm. High near 73. Chance of precipitation is 80%.
Thursday Night
 
 A chance of showers and thunderstorms. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Friday
 
 A 20 percent chance of showers. Partly sunny, with a high near 70.
Friday Night
 
 A 20 percent chance of showers. Partly cloudy, with a low around 51.
Saturday
 
 Mostly sunny, with a high near 74.
Saturday Night
 
 Mostly clear, with a low around 55.
Sunday
 
 A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.

 

Forecast from NOAA-NWS for Alpharetta GA.