Williamson County weather, town by town
5 places in Williamson 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 1891 to 2026. Station extremes, not official state records.
Williamson County Weather Facts
Williamson County has 5 places on myweatherrock (3 cities, 2 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 108°F at Franklin Sewage Plt on July 12, 1930. The coldest night is -22°F at Franklin Sewage Plt on January 22, 1985. The wettest day brought 11 inches of rain at Fairview Bowie Nature Ctr on May 2, 2010. The biggest single-day snow measured 10.98 inches at Franklin Sewage Plt on February 25, 1894. Those are station measurements from NOAA's daily records, 1891 to 2026, not official state records. By area the largest place is Franklin, about 45 square miles.
About Williamson County weather
The map on the Now tab shows every Williamson 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 4 Williamson 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 28°F. March is the wettest, with rain on about 13 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.
Williamson County weather records
Measured at the NOAA stations serving these towns, daily records 1891 to 2026. Station extremes, not official state records.
Common questions about Williamson County weather
- What is the hottest temperature recorded at a Williamson County station?
- 108°F at Franklin Sewage Plt on July 12, 1930, in the NOAA daily station records myweatherrock holds (1891 to 2026).
- What is the coldest temperature recorded at a Williamson County station?
- -22°F at Franklin Sewage Plt on January 22, 1985.
- What is the most rain a Williamson County station has measured in one day?
- 11 inches at Fairview Bowie Nature Ctr on May 2, 2010.
- What is the biggest one-day snowfall at a Williamson County station?
- 10.98 inches at Franklin Sewage Plt on February 25, 1894.
- How many Williamson County towns have a weather page here?
- 5: 3 cities, 2 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 Williamson 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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