Grainger County weather, town by town
3 places in Grainger 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 1955 to 2026. Station extremes, not official state records.
Grainger County Weather Facts
Grainger County has 3 places on myweatherrock (2 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 Sevierville on July 1, 2012. The coldest night is -24°F at Sevierville on January 21, 1985. The wettest day brought 5.01 inches of rain at Sevierville on March 12, 1963. The biggest single-day snow measured 16.5 inches at Morristown Radio Wcrk on March 13, 1993. Those are station measurements from NOAA's daily records, 1955 to 2026, not official state records. By area the largest place is Blaine, about 10 square miles.
About Grainger County weather
The map on the Now tab shows every Grainger 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 3 Grainger 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 29°F. March is the wettest, with rain on about 13 days. July afternoons run from about 86°F in Rutledge to 89°F in Blaine.
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.
Grainger County weather records
Measured at the NOAA stations serving these towns, daily records 1955 to 2026. Station extremes, not official state records.
Common questions about Grainger County weather
- What is the hottest temperature recorded at a Grainger County station?
- 106°F at Sevierville on July 1, 2012, in the NOAA daily station records myweatherrock holds (1955 to 2026).
- What is the coldest temperature recorded at a Grainger County station?
- -24°F at Sevierville on January 21, 1985.
- What is the most rain a Grainger County station has measured in one day?
- 5.01 inches at Sevierville on March 12, 1963.
- What is the biggest one-day snowfall at a Grainger County station?
- 16.5 inches at Morristown Radio Wcrk on March 13, 1993.
- How many Grainger County towns have a weather page here?
- 3: 2 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 Grainger 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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