National Weather Service Forecast for: Martinez GA
Issued by: National Weather Service Columbia, SC
Updated: 2:19 am EDT Jul 18, 2026
 
Today

Today: A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 106. Southwest wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms

 Tonight

Tonight: A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Mostly Clear
 Sunday

Sunday: Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 3 to 6 mph.
Sunny

 Sunday
Night
Sunday Night: A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 75. Light southwest wind. Chance of precipitation is 30%.
Chance
T-storms then
Chance
Showers
 Monday

Monday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunny then
Slight Chance
T-storms
 Monday
Night
Monday Night: Partly cloudy, with a low around 75.
Partly Cloudy

 Tuesday

Tuesday: Mostly sunny, with a high near 94.
Mostly Sunny

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 77.
Partly Cloudy

 Wednesday

Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Chance of precipitation is 30%.
Mostly Sunny
then Chance
T-storms
Hi 95 °F Lo 75 °F Hi 95 °F Lo 75 °F Hi 94 °F Lo 75 °F Hi 94 °F Lo 77 °F Hi 95 °F

Heat Advisory
 

Today
 
 A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 95. Heat index values as high as 106. Southwest wind 3 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
 
 A chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 Sunny, with a high near 95. Heat index values as high as 106. Southwest wind 3 to 6 mph.
Sunday Night
 
 A chance of showers and thunderstorms, mainly between 8pm and 2am. Partly cloudy, with a low around 75. Light southwest wind. Chance of precipitation is 30%.
Monday
 
 A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 94. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
 
 Partly cloudy, with a low around 75.
Tuesday
 
 Mostly sunny, with a high near 94.
Tuesday Night
 
 Partly cloudy, with a low around 77.
Wednesday
 
 A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 95. Chance of precipitation is 30%.
Wednesday Night
 
 A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.
Thursday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Thursday Night
 
 A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Friday
 
 A chance of showers and thunderstorms. Mostly sunny, with a high near 92. Chance of precipitation is 30%.

 

Forecast from NOAA-NWS for Martinez GA.