Union County, TN Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 86. Southwest wind 0 to 5 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
- Apr 15 to Apr 19, 2026
- Latest sync
- Apr 13, 2026 3:02 AM EDT
- Forecast office
- MRX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Saturday looks like the warmest upcoming period in Union County at 89 degrees F.
Saturday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Thursday at about 5 to 10 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 3:02 AM 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
Partly cloudy, with a low around 60. Southwest wind around 5 mph.
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 60. Chance of precipitation is 20%.
Mostly sunny, with a high near 87.
Partly cloudy, with a low around 61.
A slight chance of rain showers after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
A chance of rain showers before 8am, then a chance of showers and thunderstorms. Partly sunny, with a high near 77.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Apr 15
|
Mostly Sunny
|
86°F |
0 to 5 mph
SW
|
|
Wednesday Night
Apr 15
|
Partly Cloudy
|
60°F |
5 mph
SW
|
|
Thursday
Apr 16
|
Partly Sunny then Slight Chance Showers And Thunderstorms
|
85°F |
5 to 10 mph
SW
|
|
Thursday Night
Apr 16
|
Slight Chance Showers And Thunderstorms
|
60°F |
0 to 10 mph
SW
|
|
Friday
Apr 17
|
Mostly Sunny
|
87°F |
0 to 5 mph
SW
|
|
Friday Night
Apr 17
|
Partly Cloudy
|
61°F |
0 to 5 mph
SE
|
|
Saturday
Apr 18
|
Mostly Sunny then Slight Chance Rain Showers
|
89°F |
0 to 10 mph
S
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
59°F |
5 to 10 mph
SW
|
|
Sunday
Apr 19
|
Chance Showers And Thunderstorms
|
77°F |
10 mph
W
|
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.
