NWS Forecast for Gainesville GA

National Weather Service Forecast for: Gainesville GA
Issued by: National Weather Service Peachtree City, GA

Updated: 7:06 pm EDT Sep 12, 2026

Tonight Chance T-storms then Partly Cloudy	Sunday Mostly Sunny	Sunday Night Mostly Clear	Monday Sunny	Monday Night Mostly Clear	Tuesday Mostly Sunny	Tuesday Night Mostly Clear	Wednesday Sunny	Wednesday Night Clear
Lo 70 °F	Hi 90 °F	Lo 69 °F	Hi 93 °F	Lo 71 °F	Hi 87 °F	Lo 66 °F	Hi 86 °F	Lo 63 °F

Hazardous Weather Outlook

Tonight	A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 70. Southwest wind around 5 mph becoming calm.
Sunday	Mostly sunny, with a high near 90. West wind around 5 mph.
Sunday Night	Mostly clear, with a low around 69. Northwest wind around 5 mph.
Monday	Sunny, with a high near 93. Heat index values as high as 98. North wind around 5 mph becoming northeast in the afternoon.
Monday Night	Mostly clear, with a low around 71. Light and variable wind becoming east 5 to 10 mph after midnight. Winds could gust as high as 15 mph.
Tuesday	Mostly sunny, with a high near 87.
Tuesday Night	Mostly clear, with a low around 66.
Wednesday	Sunny, with a high near 86.
Wednesday Night	Clear, with a low around 63.
Thursday	Sunny, with a high near 87.
Thursday Night	Clear, with a low around 66.
Friday	Sunny, with a high near 90.
Friday Night	Mostly clear, with a low around 68.
Saturday	A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 89.

Forecast from NOAA-NWS for Gainesville GA.