Sullivan County, TN Weather Forecast
County weather hub
Sunny
Compare major city weather across Sullivan County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 71. Southwest wind 0 to 5 mph.
County Weather Overview
This county weather page brings together forecast coverage for Sullivan County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Sullivan County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 10 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 6:43 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sullivan County
Tuesday looks like the warmest upcoming period in Sullivan County at 82 degrees F.
Friday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Sunday at about 5 to 10 mph S.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 6:43 AM 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
Mostly clear, with a low around 51. Southwest wind 0 to 5 mph.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 73. West wind 0 to 5 mph. Chance of precipitation is 20%.
A slight chance of rain showers before 8pm. Mostly clear, with a low around 53. Northeast wind 0 to 5 mph. Chance of precipitation is 20%.
Sunny, with a high near 79.
Partly cloudy, with a low around 57.
Partly sunny, with a high near 77.
Partly cloudy, with a low around 58.
Mostly sunny, with a high near 82.
Partly cloudy, with a low around 60.
Mostly sunny, with a high near 82.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 10
|
Sunny
|
71°F |
0 to 5 mph
SW
|
|
Friday Night
Apr 10
|
Mostly Clear
|
51°F |
0 to 5 mph
SW
|
|
Saturday
Apr 11
|
Mostly Sunny then Slight Chance Rain Showers
|
73°F |
0 to 5 mph
W
|
|
Saturday Night
Apr 11
|
Slight Chance Rain Showers then Mostly Clear
|
53°F |
0 to 5 mph
NE
|
|
Sunday
Apr 12
|
Sunny
|
79°F |
5 to 10 mph
S
|
|
Sunday Night
Apr 12
|
Partly Cloudy
|
57°F |
5 to 10 mph
S
|
|
Monday
Apr 13
|
Partly Sunny
|
77°F |
5 to 10 mph
SW
|
|
Monday Night
Apr 13
|
Partly Cloudy
|
58°F |
5 mph
S
|
|
Tuesday
Apr 14
|
Mostly Sunny
|
82°F |
5 to 10 mph
SW
|
|
Tuesday Night
Apr 14
|
Partly Cloudy
|
60°F |
0 to 5 mph
S
|
|
Wednesday
Apr 15
|
Mostly Sunny
|
82°F |
0 to 10 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Sullivan County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Sullivan County.
Largest mapped city population in this region: 54,112.
