Union County, FL Weather Forecast
County weather hub
Showers And Thunderstorms Likely
Compare major city weather across Union County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of rain showers before 8am, then showers and thunderstorms likely between 8am and 2pm, then showers and thunderstorms likely. Partly sunny, with a high near 93. Chance of precipitation is 70%.
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 21 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:50 PM EDT
- Forecast office
- JAX
- Source
- NOAA / NWS
Daily Outlook
This Week in Union County
Wednesday looks like the warmest upcoming period in Union County at 94 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 75 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 12 mph S.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:50 PM EDT
- Coverage
- 3 days
- Time zone
- America/New_York
- Forecast office
- JAX
- Radar station
- KJAX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 8pm. Mostly cloudy, with a low around 75. Chance of precipitation is 70%.
A chance of showers and thunderstorms after 8am. Partly sunny, with a high near 94. Chance of precipitation is 50%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 75. Chance of precipitation is 50%.
Showers and thunderstorms likely. Partly sunny, with a high near 94. Chance of precipitation is 60%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Jul 21
|
Showers And Thunderstorms Likely
|
93°F |
7 to 12 mph
S
|
|
Tuesday Night
Jul 21
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
75°F |
3 to 10 mph
S
|
|
Wednesday
Jul 22
|
Chance Showers And Thunderstorms
|
94°F |
3 to 10 mph
SW
|
|
Wednesday Night
Jul 22
|
Chance Showers And Thunderstorms
|
75°F |
3 to 9 mph
SW
|
|
Thursday
Jul 23
|
Showers And Thunderstorms Likely
|
94°F |
3 to 8 mph
SW
|
|
Thursday Night
Jul 23
|
Showers And Thunderstorms Likely
|
75°F |
1 to 7 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: 1,789.
