Gallatin, TN Weather Forecast
Sumner County, Tennessee
Seven-day outlook
41–80°F across the weekThe week runs between 46° and 80°, 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 61%. 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 Gallatin forecast
Gallatin sits at 36.3815°N, 86.4670°W in Sumner 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
- Sumner County
- Coordinates
- 36.3815°N, 86.4670°W
- Population
- 50,355 · 2023 estimate
- Land area
- 34.888 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Gallatin, 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 Gallatin?
The nearest Doppler radar is KOHX (Nashville, TN), 11 miles to the SSW. 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 Gallatin its center is about 550 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Gallatin, so low-level rotation and the leading edge of a gust front show up on it. Gallatin is closer to its radar than 95% of US cities.
The closest instrument actually measuring the air is KXNX · Gallatin/Sumner Cnty on the ASOS/AWOS network, 3.2 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
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 Gallatin
- Hendersonville, TN9 mi
- White House, TN13 mi
- Mount Juliet, TN13 mi
- Millersville, TN14 mi
- Goodlettsville, TN14 mi
- Lebanon, TN14 mi
- Portland, TN15 mi
- Hartsville, TN17 mi
Elsewhere in Tennessee
NashvilleMemphisKnoxvilleChattanoogaClarksvilleMurfreesboroAll Tennessee forecasts →