Knox County, TN Weather Forecast
County weather hub
Showers And Thunderstorms
Compare major city weather across Knox County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers before 11am, then showers and thunderstorms. Mostly cloudy, with a high near 80. Northwest wind around 0 mph. Chance of precipitation is 90%.
County Weather Overview
This county weather page brings together forecast coverage for Knox County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Knox County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- May 25 to May 29, 2026
- Latest sync
- May 22, 2026 9:16 PM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Knox County
Wednesday looks like the warmest upcoming period in Knox County at 82 degrees F.
Thursday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Wednesday at about 0 to 5 mph W.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- May 22, 2026 9:16 PM EDT
- Coverage
- 5 days
- Time zone
- America/New_York
- Forecast office
- MRX
- Radar station
- KMRX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms. Mostly cloudy, with a low around 64. North wind around 0 mph. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a high near 80. Chance of precipitation is 100%.
Showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 100%.
A chance of rain showers before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 82. Chance of precipitation is 90%.
Showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 90%.
A chance of rain showers before 8am, then showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 80%.
A chance of rain showers before 2pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Memorial Day
May 25
|
Showers And Thunderstorms
|
80°F |
0 mph
|
|
Monday Night
May 25
|
Showers And Thunderstorms
|
64°F |
0 mph
|
|
Tuesday
May 26
|
Showers And Thunderstorms
|
80°F |
0 mph
|
|
Tuesday Night
May 26
|
Showers And Thunderstorms
|
64°F |
0 mph
|
|
Wednesday
May 27
|
Showers And Thunderstorms
|
82°F |
0 to 5 mph
W
|
|
Wednesday Night
May 27
|
Showers And Thunderstorms
|
64°F |
0 mph
|
|
Thursday
May 28
|
Showers And Thunderstorms
|
81°F |
0 to 5 mph
NW
|
|
Thursday Night
May 28
|
Showers And Thunderstorms
|
63°F |
0 to 5 mph
N
|
|
Friday
May 29
|
Showers And Thunderstorms Likely
|
80°F |
0 to 5 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Knox County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Knox County.
Largest mapped city population in this region: 190,223.
