Knoxville, TN Weather Forecast
Right now it is 75°F and mostly clear in Knoxville (as of Tue, 12:53 PM EST). This Afternoon: high near 79°F. Tomorrow: chance showers and thunderstorms, high near 73°F. Official NWS forecast and alerts, refreshed every 30 minutes.
Current conditions
Measured at Knoxville, McGhee Tyson Airport (10 mi from the city center).
Weather tomorrow in Knoxville
Chance Showers And Thunderstorms
89% chance of rain/snow73°FA chance of rain showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 73. South wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Showers And Thunderstorms 88% chance of rain/snow62°FShowers and thunderstorms. Mostly cloudy, with a low around 62. South wind 0 to 5 mph. Chance of precipitation is 90%.
Weather alerts
No active National Weather Service watches, warnings or advisories for Knoxville right now.
7-day forecast
Sunny 12% chance of rain/snow79°F / 60°FSunny. High near 79, with temperatures falling to around 76 in the afternoon. South wind 0 to 5 mph. Tonight: Mostly cloudy, with a low around 60. Northeast wind 0 to 5 mph.
Chance Showers And Thunderstorms 89% chance of rain/snow73°F / 62°FA chance of rain showers before 10am, then a chance of showers and thunderstorms between 10am and 1pm, then a chance of showers and thunderstorms between 1pm and 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 73. South wind 0 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible. Wednesday Night: Showers and thunderstorms. Mostly cloudy, with a low around 62. South wind 0 to 5 mph. Chance of precipitation is 90%.
Rain Showers Likely 66% chance of rain/snow73°F / 54°FRain showers likely. Partly sunny, with a high near 73. Southwest wind 0 to 5 mph. Chance of precipitation is 70%. Thursday Night: A chance of rain showers. Mostly cloudy, with a low around 54. Southwest wind around 0 mph. Chance of precipitation is 40%.
Chance Rain Showers 34% chance of rain/snow72°F / 49°FA chance of rain showers. Mostly sunny, with a high near 72. West wind 0 to 5 mph. Chance of precipitation is 30%. Friday Night: A slight chance of rain showers before 7pm. Partly cloudy, with a low around 49. Chance of precipitation is 20%.
Mostly Sunny65°F / 44°FMostly sunny, with a high near 65. Saturday Night: Partly cloudy, with a low around 44.
Partly Sunny 15% chance of rain/snow63°F / 41°FPartly sunny, with a high near 63. Sunday Night: A slight chance of rain showers after 7pm. Partly cloudy, with a low around 41. Chance of precipitation is 20%.
Slight Chance Rain Showers then Mostly Sunny 15% chance of rain/snow60°F / 38°FA slight chance of rain showers before 7am. Mostly sunny, with a high near 60. Chance of precipitation is 20%. Monday Night: Mostly clear, with a low around 38.
Forecast issued by NWS forecast office MRX · updated Nov 3, 12:06 PM EST. Daytime highs and overnight lows are on the right.
Hourly forecast, radar & more on weather.gov
Nearby cities
Knoxville population: 202,021 (U.S. Census Bureau, July 1, 2025 estimate). More Tennessee cities · All US cities
Source: National Weather Service / NOAA (public domain), fetched live. Tachlis is not affiliated with the NWS.
Questions & answers
What is the weather tomorrow in Knoxville?
Wednesday, November 4: Chance Showers And Thunderstorms, high near 73°F; night: showers and thunderstorms, low around 62°F.
Where does the Knoxville forecast come from?
From the National Weather Service forecast office MRX, which writes the official forecast for Knoxville's 2.5 km grid square. Current conditions come from the nearest NWS/FAA weather station.
How often is the Knoxville weather updated?
This page fetches fresh data from the National Weather Service at most every 30 minutes, and checks for new watches and warnings every 5 minutes.
What time zone are the times shown in?
Local time for Knoxville (America/New York).
Why can the current temperature differ from the forecast?
The current reading is a real measurement at a weather station, often at an airport, while the forecast describes the whole grid square around the city. Temperatures can differ by a few degrees across a city.