Smithville, TN Weather Forecast
DeKalb County, Tennessee
Seven-day outlook
41–78°F across the weekThe week runs between 44° and 78°, with tomorrow the warmest day of it. The second half leans cooling, and Sunday is the coolest day in it. Sunday is the wettest day, peaking near 54%. 5 of the 7 days stay dry.
Forecasts come from the National Weather Service's own computer models, and current conditions from the nearest reporting weather station. Both are served through the weather API. A forecast is guidance, not a warning, and anything the Weather Service has actually issued is on the live map.
The written summaries on this page are generated from the forecast data above, not by a meteorologist. Each sentence is a reading of the same numbers you can see, and no forecaster has reviewed them.
About the Smithville forecast
Smithville sits at 35.9584°N, 85.8211°W in DeKalb County, Tennessee. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- DeKalb County
- Coordinates
- 35.9584°N, 85.8211°W
- Population
- 5,392 · 2023 estimate
- Land area
- 5.854 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Smithville, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Smithville?
The nearest Doppler radar is KOHX (Nashville, TN), 46 miles to the WNW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Smithville its center is about 3,200 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over Smithville to show rotation in the part of a storm where tornadoes actually form.
The closest instrument actually measuring the air is KSRB · Sparta/Upper Cumberland Rgnl on the ASOS/AWOS network, 17 miles away. Far enough that "current conditions" for Smithville is an educated reading of somewhere else, worth knowing before you plan around a single temperature.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the Tennessee observing network as of this build.
Forecasts near Smithville
- Woodbury, TN17 mi
- McMinnville, TN19 mi
- Sparta, TN20 mi
- Cookeville, TN22 mi
- Algood, TN27 mi
- Lebanon, TN34 mi
- Monterey, TN34 mi
- Murfreesboro, TN34 mi
Elsewhere in Tennessee
NashvilleMemphisKnoxvilleChattanoogaClarksvilleMurfreesboroAll Tennessee forecasts →