Union County, TN Weather Forecast
County weather hub
Patchy Fog then Sunny
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy fog before 9am. Sunny, with a high near 88. Northeast wind around 0 mph.
County Weather Overview
This county weather page brings together forecast coverage for Union 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 Union County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 15 to Jul 19, 2026
- Latest sync
- Jul 13, 2026 1:30 PM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Thursday looks like the warmest upcoming period in Union County at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 69 degrees F.
The strongest winds are forecast for Saturday at about 0 to 5 mph SE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 13, 2026 1:30 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
Mostly clear, with a low around 69. North wind around 0 mph.
Sunny, with a high near 90. Northwest wind around 0 mph.
Mostly clear, with a low around 71.
Sunny, with a high near 90.
Mostly clear, with a low around 71.
A slight chance of rain showers between 8am and 2pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 8pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Patchy Fog then Sunny
|
88°F |
0 mph
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
69°F |
0 mph
|
|
Thursday
Jul 16
|
Sunny
|
90°F |
0 mph
|
|
Thursday Night
Jul 16
|
Mostly Clear
|
71°F |
0 mph
|
|
Friday
Jul 17
|
Sunny
|
90°F |
0 mph
|
|
Friday Night
Jul 17
|
Mostly Clear
|
71°F |
0 mph
|
|
Saturday
Jul 18
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
89°F |
0 to 5 mph
SE
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
71°F |
0 to 5 mph
W
|
|
Sunday
Jul 19
|
Chance Showers And Thunderstorms
|
88°F |
0 to 5 mph
SW
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms
|
70°F |
0 to 5 mph
SW
|
Major City Forecasts
Live forecast snapshots for major cities across Union County.
Coverage
Forecast coverage currently spans 1 of 1 mapped cities in Union County.
Largest mapped city population in this region: 2,452.
