Jefferson County, TN Weather Forecast
County weather hub
Sunny then Rain Showers Likely
Compare major city weather across Jefferson County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Rain showers likely after 2pm. Sunny, with a high near 82. Southwest wind 0 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
County Weather Overview
This county weather page brings together forecast coverage for Jefferson County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 1 of 1 mapped cities in Jefferson County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 14, 2026 8:38 PM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Jefferson County
Friday looks like the warmest upcoming period in Jefferson County at 82 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 0 to 20 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 8:38 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
Rain showers. Mostly cloudy, with a low around 46. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
A chance of rain showers before 8am. Partly sunny, with a high near 59. North wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Mostly clear, with a low around 37. Northeast wind 0 to 10 mph.
Sunny, with a high near 66.
Mostly clear, with a low around 38.
Sunny, with a high near 68.
Mostly clear, with a low around 44.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Sunny then Rain Showers Likely
|
82°F |
0 to 20 mph
SW
|
|
Friday Night
Oct 16
|
Rain Showers
|
46°F |
10 to 15 mph
NW
|
|
Saturday
Oct 17
|
Chance Rain Showers then Partly Sunny
|
59°F |
10 to 15 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
37°F |
0 to 10 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
5 mph
NE
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
38°F |
0 to 5 mph
E
|
|
Monday
Oct 19
|
Sunny
|
68°F |
0 to 5 mph
NE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
44°F |
0 mph
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
71°F |
0 to 5 mph
NE
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
46°F |
0 mph
|
|
Wednesday
Oct 21
|
Mostly Sunny
|
74°F |
0 mph
|
Major City Forecasts
Live forecast snapshots for major cities across Jefferson County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Jefferson County.
Largest mapped city population in this region: 2,634.
