National Weather Service Forecast for: Union Park FL
Issued by: National Weather Service Melbourne, FL
Updated: 12:14 am EDT Jun 30, 2026
 
Overnight

Overnight: Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.
Mostly Clear

 Tuesday

Tuesday: Showers and thunderstorms likely, mainly between 2pm and 5pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Slight Chance
T-storms then
T-storms
Likely
 Tuesday
Night
Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 77. Northeast wind 5 to 10 mph becoming light after midnight.
Chance
T-storms then
Mostly Clear
 Wednesday

Wednesday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 91. East northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Chance
T-storms

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 76. East northeast wind 5 to 10 mph.
Mostly Clear

 Thursday

Thursday: Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Light northeast wind becoming east 5 to 10 mph in the afternoon. Chance of precipitation is 60%.
Sunny then
T-storms
Likely
 Thursday
Night
Thursday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light east southeast after midnight. Chance of precipitation is 60%.
T-storms
Likely then
Slight Chance
T-storms
 Friday

Friday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 70%.
Slight Chance
T-storms then
T-storms
Likely
 Friday
Night
Friday Night: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 77. South wind around 5 mph. Chance of precipitation is 60%.
T-storms
Likely then
Slight Chance
T-storms
Lo 78 °F Hi 93 °F Lo 77 °F Hi 91 °F Lo 76 °F Hi 92 °F Lo 76 °F Hi 94 °F Lo 77 °F

 

Overnight
 
 Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm.
Tuesday
 
 Showers and thunderstorms likely, mainly between 2pm and 5pm. Mostly sunny, with a high near 93. Heat index values as high as 103. Light and variable wind becoming east northeast 5 to 10 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
 A 30 percent chance of showers and thunderstorms, mainly before 7pm. Partly cloudy, with a low around 77. Northeast wind 5 to 10 mph becoming light after midnight.
Wednesday
 
 A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 91. East northeast wind 5 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Wednesday Night
 
 Mostly clear, with a low around 76. East northeast wind 5 to 10 mph.
Thursday
 
 Showers and thunderstorms likely after 2pm. Mostly sunny, with a high near 92. Light northeast wind becoming east 5 to 10 mph in the afternoon. Chance of precipitation is 60%.
Thursday Night
 
 Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 76. East wind 5 to 10 mph becoming light east southeast after midnight. Chance of precipitation is 60%.
Friday
 
 Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 94. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 70%.
Friday Night
 
 Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 77. South wind around 5 mph. Chance of precipitation is 60%.
Independence Day
 
 Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 94. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 70%.
Saturday Night
 
 Showers and thunderstorms likely. Partly cloudy, with a low around 77. South wind around 5 mph. Chance of precipitation is 60%.
Sunday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 94. South wind 5 to 10 mph. Chance of precipitation is 60%.
Sunday Night
 
 Showers and thunderstorms likely. Partly cloudy, with a low around 77. South wind around 5 mph. Chance of precipitation is 60%.
Monday
 
 A 50 percent chance of showers and thunderstorms. Sunny, with a high near 94. South southwest wind 5 to 10 mph.

 

Forecast from NOAA-NWS for Union Park FL.