Gwinnett County weather, town by town
13 places in Gwinnett County, Georgia, each with its own live forecast and radar, and where a station sits close enough, measured weather records.
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Measured at the NOAA stations serving these towns, daily records 1937 to 2026. Station extremes, not official state records.
Gwinnett County Weather Facts
Gwinnett County has 13 places on myweatherrock (12 cities, 1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 105°F at Atlanta Dekalb Peachtree Ap on June 30, 2012. The coldest night is 4°F at Cumming 2N on January 7, 2014. The wettest day brought 6.05 inches of rain at Cumming 2N on February 21, 1961. The biggest single-day snow measured 7.01 inches at Cumming 2N on February 29, 1968. Those are station measurements from NOAA's daily records, 1937 to 2026, not official state records. By area the largest place is Buford, about 19 square miles.
About Gwinnett County weather
The map on the Now tab shows every Gwinnett County town's current temperature from our own server, one dot per town. Tap any dot, or type a town above, for that town's full forecast.
What the weather is usually like
Across the 13 Gwinnett County towns with station normals, the warmest month is July, when the day usually reaches 89°F, and the coldest is January, when the night usually falls to 32°F. June is the wettest, with rain on about 12 days. January nights run from about 30°F in Buford to 34°F in Dacula.
Means of the 1991 to 2020 station normals serving these towns, as published by NOAA; each town's page carries its own.
Where these numbers come from
- Current conditions and forecast: NOAA forecast grids decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
- Records: computed by myweatherrock from NOAA GHCN-Daily station records at the stations serving these towns. Measurements, not estimates.
- Warnings and alerts: the National Weather Service, passed through unchanged.
Gwinnett County weather records
Measured at the NOAA stations serving these towns, daily records 1937 to 2026. Station extremes, not official state records.
Common questions about Gwinnett County weather
- What is the hottest temperature recorded at a Gwinnett County station?
- 105°F at Atlanta Dekalb Peachtree Ap on June 30, 2012, in the NOAA daily station records myweatherrock holds (1937 to 2026).
- What is the coldest temperature recorded at a Gwinnett County station?
- 4°F at Cumming 2N on January 7, 2014.
- What is the most rain a Gwinnett County station has measured in one day?
- 6.05 inches at Cumming 2N on February 21, 1961.
- What is the biggest one-day snowfall at a Gwinnett County station?
- 7.01 inches at Cumming 2N on February 29, 1968.
- How many Gwinnett County towns have a weather page here?
- 13: 12 cities, 1 towns. Each page carries current conditions, the hourly timeline, the ten day outlook, radar, and where a station sits close enough, measured records.
- Where does the Gwinnett County forecast come from?
- NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
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