Lafayette, TN Weather Forecast
Macon County, Tennessee
Seven-day outlook
42–77°F across the weekThe week runs between 46° and 77°, with tomorrow the warmest day of it. There is no real trend across it: one day looks much like the next. 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 Lafayette forecast
Lafayette sits at 36.5240°N, 86.0306°W in Macon 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
- Macon County
- Coordinates
- 36.5240°N, 86.0306°W
- Population
- 5,839 · 2023 estimate
- Land area
- 5.298 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Lafayette, 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 Lafayette?
The nearest Doppler radar is KOHX (Nashville, TN), 35 miles to the WSW. 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 Lafayette its center is about 2,200 ft above ground. That is comfortably inside the useful range. The lowest scan passes low enough over Lafayette to show rotation in the part of a storm where tornadoes actually form. Lafayette is closer to its radar than 63% of US cities.
The closest instrument actually measuring the air is KXNX · Gallatin/Sumner Cnty on the ASOS/AWOS network, 23 miles away. Far enough that "current conditions" for Lafayette 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 Lafayette
- Hartsville, TN11 mi
- Westmoreland, TN12 mi
- Scottsville, KY18 mi
- Gallatin, TN26 mi
- Portland, TN28 mi
- Lebanon, TN28 mi
- Franklin, KY32 mi
- Glasgow, KY34 mi
Elsewhere in Tennessee
NashvilleMemphisKnoxvilleChattanoogaClarksvilleMurfreesboroAll Tennessee forecasts →