Sumner County weather, town by town
16 places in Sumner County, Tennessee, 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 1953 to 2026. Station extremes, not official state records.
Sumner County Weather Facts
Sumner County has 16 places on myweatherrock (9 census-designated places, 6 cities, 1 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 106°F at Bethpage 1 S on August 17, 2007. The coldest night is -19°F at Portland Sewage Plt on January 24, 1963. The wettest day brought 8.79 inches of rain at Bethpage 1 S on May 3, 2010. The biggest single-day snow measured 10 inches at Portland Sewage Plt on November 2, 1966. Those are station measurements from NOAA's daily records, 1953 to 2026, not official state records. By area the largest place is Gallatin, about 35 square miles.
About Sumner County weather
The map on the Now tab shows every Sumner 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 16 Sumner County towns with station normals, the warmest month is July, when the day usually reaches 88°F, and the coldest is January, when the night usually falls to 27°F. March is the wettest, with rain on about 11 days.
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.
Sumner County weather records
Measured at the NOAA stations serving these towns, daily records 1953 to 2026. Station extremes, not official state records.
Common questions about Sumner County weather
- What is the hottest temperature recorded at a Sumner County station?
- 106°F at Bethpage 1 S on August 17, 2007, in the NOAA daily station records myweatherrock holds (1953 to 2026).
- What is the coldest temperature recorded at a Sumner County station?
- -19°F at Portland Sewage Plt on January 24, 1963.
- What is the most rain a Sumner County station has measured in one day?
- 8.79 inches at Bethpage 1 S on May 3, 2010.
- What is the biggest one-day snowfall at a Sumner County station?
- 10 inches at Portland Sewage Plt on November 2, 1966.
- How many Sumner County towns have a weather page here?
- 16: 9 census-designated places, 6 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 Sumner 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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