National Weather Service Forecast for: Deltona FL
Issued by: National Weather Service Melbourne, FL
Updated: 6:15 pm EDT Jun 19, 2026
 
Tonight

Tonight: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 76. West wind 5 to 10 mph becoming south in the evening.
Chance
T-storms then
Partly Cloudy
 Saturday

Saturday: Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 91. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
T-storms
Likely

 Saturday
Night
Saturday Night: Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 74. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely then
Slight Chance
Showers
 Sunday

Sunday: A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.
Slight Chance
T-storms then
T-storms
Likely
 Sunday
Night
Sunday Night: Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 60%.
T-storms
Likely then
Mostly Clear
 Monday

Monday: A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Sunny then
Slight Chance
T-storms
 Monday
Night
Monday Night: Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Partly Cloudy

 Tuesday

Tuesday: Sunny and hot, with a high near 95. Calm wind becoming west southwest around 5 mph in the afternoon.
Hot

 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 75. Southwest wind around 5 mph.
Partly Cloudy
Lo 76 °F Hi 91 °F Lo 74 °F Hi 92 °F Lo 75 °F Hi 94 °F Lo 75 °F Hi 95 °F Lo 75 °F

Heat Advisory
 

Tonight
 
 A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 76. West wind 5 to 10 mph becoming south in the evening.
Saturday
 
 Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 91. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
 
 Showers and thunderstorms likely before midnight, then a slight chance of showers between midnight and 2am. Mostly cloudy, with a low around 74. Northwest wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
 
 A slight chance of showers, then showers and thunderstorms likely after 11am. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 70%.
Sunday Night
 
 Showers and thunderstorms likely before 8pm. Partly cloudy, with a low around 75. Calm wind. Chance of precipitation is 60%.
Monday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Calm wind becoming west around 5 mph in the afternoon.
Monday Night
 
 Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Tuesday
 
 Sunny and hot, with a high near 95. Calm wind becoming west southwest around 5 mph in the afternoon.
Tuesday Night
 
 Partly cloudy, with a low around 75. Southwest wind around 5 mph.
Wednesday
 
 A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 95. West wind around 5 mph.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. Southwest wind around 5 mph becoming calm.
Thursday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 94. Southwest wind around 5 mph.
Thursday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm.
Friday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Deltona FL.