Knox County, TN Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Knox County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 86. North wind 0 to 5 mph.
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
- Aug 24 to Aug 29, 2026
- Latest sync
- Aug 22, 2026 10:10 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 90 degrees F.
Monday Night is the coolest period ahead with temperatures near 62 degrees F.
The strongest winds are forecast for Monday at about 0 to 5 mph N.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 22, 2026 10:10 PM EDT
- Coverage
- 6 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
Partly cloudy, with a low around 62. Northeast wind 0 to 5 mph.
Mostly sunny, with a high near 88. Northeast wind 0 to 5 mph.
Mostly clear, with a low around 65. Northeast wind 0 to 5 mph.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
A chance of rain showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 50%.
A chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
A slight chance of rain showers before 2pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Monday
Aug 24
|
Mostly Sunny
|
86°F |
0 to 5 mph
N
|
|
Monday Night
Aug 24
|
Partly Cloudy
|
62°F |
0 to 5 mph
NE
|
|
Tuesday
Aug 25
|
Mostly Sunny
|
88°F |
0 to 5 mph
NE
|
|
Tuesday Night
Aug 25
|
Mostly Clear
|
65°F |
0 to 5 mph
NE
|
|
Wednesday
Aug 26
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
90°F |
0 to 5 mph
NW
|
|
Wednesday Night
Aug 26
|
Chance Showers And Thunderstorms
|
68°F |
0 to 5 mph
S
|
|
Thursday
Aug 27
|
Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
SW
|
|
Thursday Night
Aug 27
|
Chance Showers And Thunderstorms
|
68°F |
0 to 5 mph
SW
|
|
Friday
Aug 28
|
Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
89°F |
0 to 5 mph
NW
|
|
Friday Night
Aug 28
|
Slight Chance Showers And Thunderstorms
|
68°F |
0 to 5 mph
N
|
|
Saturday
Aug 29
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
90°F |
0 to 5 mph
N
|
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.
