Severe Weather in the Plains; Heavy Rainfall in the Ohio and Tennessee Valleys; Heat Wave in the Central U.S.

Numerous severe storms with a potential for severe wind gusts, tornadoes (some potentially strong), and very large hail are expected in parts of the central and northern Plains. Heavy rainfall may bring a flooding threat to parts of the northern Plains and from the Ohio Valley to the Southeast. Fire weather concerns persist in the Four Corners Region. Hot and humid expected in the central U.S.. Read More >

7-Day Zone Forecast for Knox County (Text-Only)
NWS Forecast for: Knox County
Issued by: National Weather Service Morristown, TN
Last Update: 706 AM EDT Tue Jun 9 2026
Print




Today: Partly sunny with a chance of showers and thunderstorms this morning, then showers and thunderstorms likely this afternoon. Highs in the mid 80s. Southwest winds 10 mph or less. Chance of rain 70 percent.

Tonight: Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the evening. A slight chance of showers and thunderstorms late. Lows around 70. Light winds. Chance of rain 40 percent.

Wednesday: Partly sunny with a chance of showers and thunderstorms. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.

Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 70. Light winds.

Thursday: Sunny. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs around 90. Light winds. Chance of rain 20 percent.

Thursday Night: Mostly clear. Lows in the lower 70s.

Friday: Mostly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 70 percent.

Friday Night: Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 60s. Chance of rain 50 percent.

Saturday: Partly sunny. A slight chance of showers in the morning, then a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent.

Saturday Night: Partly cloudy. Lows in the mid 60s.

Sunday: Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 30 percent.

Sunday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the upper 60s. Chance of rain 50 percent.

Monday: Showers likely with a slight chance of thunderstorms in the morning, then showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 70 percent.







Zone Forecast: Knox County

Visit your local NWS office at: https://www.weather.gov/mrx