Gwinnett County, GA Weather Forecast
County weather hub
Patchy Fog then Chance Showers And Thunderstorms
Compare major city weather across Gwinnett County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy fog before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. East wind 0 to 5 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Gwinnett County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 12 of 12 mapped cities in Gwinnett County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Aug 29 to Sep 4, 2026
- Latest sync
- Aug 28, 2026 10:51 PM EDT
- Forecast office
- FFC
- Source
- NOAA / NWS
Daily Outlook
This Week in Gwinnett County
Thursday looks like the warmest upcoming period in Gwinnett County at 95 degrees F.
Saturday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Saturday at about 0 to 5 mph E.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 28, 2026 10:51 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- FFC
- Radar station
- KFFC
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70. East wind around 5 mph. Chance of precipitation is 40%.
A slight chance of rain showers between 8am and 11am, then a chance of showers and thunderstorms. Partly sunny, with a high near 89. Heat index values as high as 97. East wind around 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. East wind 0 to 5 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Sunny, with a high near 94.
Mostly clear, with a low around 73.
Sunny, with a high near 94.
Mostly clear, with a low around 73.
Sunny, with a high near 95.
Mostly clear, with a low around 74.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 95.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Patchy Fog then Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
E
|
|
Saturday Night
Aug 29
|
Chance Showers And Thunderstorms
|
70°F |
5 mph
E
|
|
Sunday
Aug 30
|
Chance Showers And Thunderstorms
|
89°F |
5 mph
E
|
|
Sunday Night
Aug 30
|
Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
0 to 5 mph
E
|
|
Monday
Aug 31
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
0 mph
|
|
Monday Night
Aug 31
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
0 mph
|
|
Tuesday
Sep 1
|
Sunny
|
94°F |
0 mph
|
|
Tuesday Night
Sep 1
|
Mostly Clear
|
73°F |
0 mph
|
|
Wednesday
Sep 2
|
Sunny
|
94°F |
0 mph
|
|
Wednesday Night
Sep 2
|
Mostly Clear
|
73°F |
0 mph
|
|
Thursday
Sep 3
|
Sunny
|
95°F |
0 to 5 mph
W
|
|
Thursday Night
Sep 3
|
Mostly Clear
|
74°F |
0 to 5 mph
W
|
|
Friday
Sep 4
|
Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
0 to 5 mph
NW
|
Major City Forecasts
Live forecast snapshots for major cities across Gwinnett County.
Coverage
Forecast coverage currently spans 12 of 12 mapped cities in Gwinnett County.
Largest mapped city population in this region: 44,294.
