National Weather Service Forecast for: Deltona FL
Issued by: National Weather Service Melbourne, FL
Updated: 2:29 am EDT Jun 30, 2026
 
Overnight

Overnight: Mostly clear, with a low around 77. Calm wind.
Mostly Clear

 Tuesday

Tuesday: Showers and thunderstorms likely, mainly before 3pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Light and variable wind becoming northeast 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Slight Chance
T-storms then
T-storms
Likely
 Tuesday
Night
Tuesday Night: A slight chance of showers between 3am and 4am. Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming light north northeast in the evening. Chance of precipitation is 20%.
Partly Cloudy
then Slight
Chance
Showers
 Wednesday

Wednesday: A 40 percent chance of showers and thunderstorms, mainly between noon and 3pm. Mostly sunny, with a high near 90. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Chance
T-storms

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 75. Northeast wind 5 to 10 mph becoming light in the evening.
Mostly Clear

 Thursday

Thursday: A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 91. Light north northeast wind becoming east northeast 5 to 10 mph in the afternoon. Chance of precipitation is 50%.
Chance
Showers then
Chance
T-storms
 Thursday
Night
Thursday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Chance
T-storms then
Mostly Clear
 Friday

Friday: Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 93. Calm wind becoming east 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 76. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
T-storms
Likely then
Slight Chance
T-storms
Lo 77 °F Hi 92 °F Lo 76 °F Hi 90 °F Lo 75 °F Hi 91 °F Lo 75 °F Hi 93 °F Lo 76 °F

 

Overnight
 
 Mostly clear, with a low around 77. Calm wind.
Tuesday
 
 Showers and thunderstorms likely, mainly before 3pm. Mostly sunny, with a high near 92. Heat index values as high as 102. Light and variable wind becoming northeast 5 to 10 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
 
 A slight chance of showers between 3am and 4am. Partly cloudy, with a low around 76. Northeast wind 5 to 10 mph becoming light north northeast in the evening. Chance of precipitation is 20%.
Wednesday
 
 A 40 percent chance of showers and thunderstorms, mainly between noon and 3pm. Mostly sunny, with a high near 90. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
 
 Mostly clear, with a low around 75. Northeast wind 5 to 10 mph becoming light in the evening.
Thursday
 
 A chance of showers, with thunderstorms also possible after 11am. Mostly sunny, with a high near 91. Light north northeast wind becoming east northeast 5 to 10 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
 
 A chance of thunderstorms before 8pm. Mostly clear, with a low around 75. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Friday
 
 Showers and thunderstorms likely, mainly after 2pm. Mostly sunny, with a high near 93. Calm wind becoming east 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 76. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%.
Independence Day
 
 Showers and thunderstorms, mainly after 2pm. High near 93. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 80%.
Saturday Night
 
 Showers and thunderstorms. Low around 75. South southeast wind around 5 mph becoming calm. Chance of precipitation is 80%.
Sunday
 
 Showers and thunderstorms likely. Mostly sunny, with a high near 93. South southwest wind around 5 mph. Chance of precipitation is 70%.
Sunday Night
 
 Showers and thunderstorms likely. Partly cloudy, with a low around 75. South southeast wind around 5 mph becoming calm in the evening. 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 Deltona FL.