Hamilton County weather, town by town
19 places in Hamilton 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 1938 to 2026. Station extremes, not official state records.
Hamilton County Weather Facts
Hamilton County has 19 places on myweatherrock (9 census-designated places, 7 cities, 3 towns), each with its own live forecast, hourly timeline, ten day outlook and radar. The hottest day in the station records is 107°F at Dayton 2Se on July 16, 1980. The coldest night is -15°F at Dayton 2Se on January 21, 1985. The wettest day brought 11 inches of rain at Soddy Daisy-Mowbray Mtn on September 17, 2004. The biggest single-day snow measured 18.5 inches at Chattanooga Ap on March 13, 1993. Those are station measurements from NOAA's daily records, 1938 to 2026, not official state records. By area the largest place is Chattanooga, about 142 square miles.
About Hamilton County weather
The map on the Now tab shows every Hamilton 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 19 Hamilton County towns with station normals, the warmest month is July, when the day usually reaches 87°F, and the coldest is January, when the night usually falls to 30°F. July is the wettest, with rain on about 11 days. July afternoons run from about 83°F in Lookout Mountain to 90°F in Apison. January nights run from about 28°F in Fairmount to 32°F in Apison.
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.
Hamilton County weather records
Measured at the NOAA stations serving these towns, daily records 1938 to 2026. Station extremes, not official state records.
Common questions about Hamilton County weather
- What is the hottest temperature recorded at a Hamilton County station?
- 107°F at Dayton 2Se on July 16, 1980, in the NOAA daily station records myweatherrock holds (1938 to 2026).
- What is the coldest temperature recorded at a Hamilton County station?
- -15°F at Dayton 2Se on January 21, 1985.
- What is the most rain a Hamilton County station has measured in one day?
- 11 inches at Soddy Daisy-Mowbray Mtn on September 17, 2004.
- What is the biggest one-day snowfall at a Hamilton County station?
- 18.5 inches at Chattanooga Ap on March 13, 1993.
- How many Hamilton County towns have a weather page here?
- 19: 9 census-designated places, 7 cities, 3 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 Hamilton 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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