Weather in Decatur, TN
Updated 2026-09-26 12:00 local time · ZIP codes 37322
Partly Cloudy
No government weather alerts were returned for this location at the latest update.
Next hours
68°3% rain
71°1% rain74°1% rain
75°6% rain76°1% rain76°1% rain74°1% rain70°2% rain
65°3% rain
62°12% rain
60°11% rain59°15% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 15%).
It feels like 61°F with winds near 8 mph.
71°F, 1% rain chance and 7 mph wind.
Visibility is around 6 mi; gusts may reach 12 mph.
Current temperature is 68°F, wind 8 mph, rain chance up to 15%.
UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Decatur
Tennessee has a humid climate with hot summers and relatively mild winters. Elevation in the east can make mountain locations notably cooler and wetter.
Decatur is part of the South weather region. The forecast point is near 35.51°N latitude and 84.79°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Decatur weather today
Partly Cloudy and 68°F in Decatur, TN. Today's high is 76°F with a 4% rain chance. Winds are around 8 mph with gusts near 12 mph. Relative humidity is 36%, pressure is 30.08 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Decatur
Sunrise is at 07:30 AM and sunset is at 07:30 PM. Tomorrow's forecast calls for Sunny with a high near 77°F and a low near 50°F. The maximum rain chance is 6%.