Knoxville, TN weather, straight from the source.

Official National Weather Service forecasts, active alerts, rain timing, and radar for Knoxville, TN.

What’s next

Hourly forecast

⌖ Knoxville, TN

Check the latest hourly conditions, seven-day outlook, rain timing, wind, sunrise and sunset for Knoxville, TN. Forecasts and alerts update from NOAA and the National Weather Service.

Next 24 hours

Rain Timeline

Retrieving weather data

Official NWS outlook

7-Day Forecast

High / low temperatures

Forecasts, icons, precipitation, wind, and alerts are from the National Weather Service. Sunrise and sunset are calculated locally for the selected coordinates.

East Tennessee

Weather planning for Knoxville, TN

Knoxville, TN is in East Tennessee. Plans often depend on humid heat, afternoon thunderstorms, flash flooding, severe weather, and tropical systems moving inland.

Knox County · East Tennessee

Conditions to watch

Extreme heat
Severe storms
Flash flooding
Tropical remnants

Storm & DetailsGusts, pressure, visibility and official risk outlooksView details +

Wind gust—

Pressure—

Visibility—

Peak rain chanceUnavailable

Dew point—

Active alerts—

Official risk outlooks

These national tools add expert storm, heavy-rain and flooding context to your local forecast.

NOAA severe-storm outlook ↗NOAA excessive-rain outlook ↗National river and flood conditions ↗Local NWS forecast office ↗

Official NOAA / NWSWSR-88D DopplerUpdates every 5 minutes

Live Doppler radar

Animated Multi-Radar/Multi-Sensor reflectivity from the National Weather Service’s network of Doppler radars. Search a U.S. city, ZIP code, or street address to center the map on local weather, then zoom to neighborhood street detail.

Open full NWS Doppler radar ↗

Live radar is ready when you need it.

The interactive map stays off until opened to keep forecasts fast.

Doppler radar and warnings: NOAA/National Weather Service · Map: OpenFreeMap, OpenMapTiles and OpenStreetMap contributors. Radar can be delayed briefly during service updates.

MyUSA.us is not affiliated with or endorsed by NOAA or the National Weather Service. For life-threatening weather, follow official NWS alerts and local authorities.

Shopping, errands, and outdoor plans

Best time to go out

Better local weather windows calculated from the latest official hourly forecast for Knoxville, TN.

⌖ Next 12 hours

“Better weather window” is planning guidance based on official NWS data—not a promise of safe conditions. Review active alerts and radar before leaving.

Official traveler information