Union County, TN Weather Forecast
County weather hub
Sunny
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Sunny, with a high near 85. 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
- Oct 14 to Oct 19, 2026
- Latest sync
- Oct 13, 2026 2:37 AM 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 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Friday at about 5 to 15 mph W.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 13, 2026 2:37 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
Partly cloudy, with a low around 63. Southwest wind around 0 mph.
Mostly sunny, with a high near 86. Southwest wind 0 to 5 mph.
Mostly clear, with a low around 64. Southwest wind 0 to 5 mph.
A slight chance of rain showers after 8am. Mostly sunny, with a high near 80. Chance of precipitation is 20%.
A slight chance of rain showers before 8pm. Partly cloudy, with a low around 45. Chance of precipitation is 20%.
Sunny, with a high near 63.
Mostly clear, with a low around 37.
Sunny, with a high near 70.
Mostly clear, with a low around 42.
Sunny, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Oct 14
|
Sunny
|
85°F |
0 to 5 mph
SW
|
|
Wednesday Night
Oct 14
|
Partly Cloudy
|
63°F |
0 mph
|
|
Thursday
Oct 15
|
Mostly Sunny
|
86°F |
0 to 5 mph
SW
|
|
Thursday Night
Oct 15
|
Mostly Clear
|
64°F |
0 to 5 mph
SW
|
|
Friday
Oct 16
|
Slight Chance Rain Showers
|
80°F |
5 to 15 mph
W
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Partly Cloudy
|
45°F |
10 to 15 mph
N
|
|
Saturday
Oct 17
|
Sunny
|
63°F |
10 mph
N
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
37°F |
5 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
70°F |
0 to 5 mph
E
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
42°F |
0 mph
|
|
Monday
Oct 19
|
Sunny
|
73°F |
0 mph
|
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.
