NWS Forecast for McDonough GA

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

Updated: 2:26 am EDT Jun 30, 2026

Today Sunny then Slight Chance T-storms	Tonight Slight Chance T-storms then Partly Cloudy	Wednesday Mostly Sunny	Wednesday Night Mostly Clear	Thursday Sunny	Thursday Night Mostly Clear	Friday Sunny	Friday Night Mostly Clear	Independence Day Sunny then Chance T-storms
Hi 95 °F	Lo 75 °F	Hi 94 °F	Lo 74 °F	Hi 95 °F	Lo 74 °F	Hi 95 °F	Lo 74 °F	Hi 94 °F

Hazardous Weather Outlook
Heat Advisory

Today	A slight chance of showers before 4pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 95. Heat index values as high as 104. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight	A 20 percent chance of showers and thunderstorms, mainly between 8pm and 9pm. Partly cloudy, with a low around 75. Calm wind.
Wednesday	Mostly sunny, with a high near 94. Heat index values as high as 101. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night	Mostly clear, with a low around 74. Calm wind.
Thursday	Sunny, with a high near 95. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night	Mostly clear, with a low around 74.
Friday	Sunny, with a high near 95.
Friday Night	Mostly clear, with a low around 74.
Independence Day	A 30 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94.
Saturday Night	A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73.
Sunday	A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
Sunday Night	A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday	A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 91.

Forecast from NOAA-NWS for McDonough GA.