National Weather Service Forecast for: Deltona FL
Issued by: National Weather Service Melbourne, FL
Updated: 9:29 pm EDT Jun 18, 2026
 
Tonight

Tonight: A 50 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 77. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Chance
T-storms then
Slight Chance
T-storms
 Juneteenth

Juneteenth: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 106. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Mostly Sunny
then Chance
T-storms
 Friday
Night
Friday Night: A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. West southwest wind around 5 mph.
Slight Chance
T-storms then
Partly Cloudy
 Saturday

Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 10 mph. Chance of precipitation is 80%.
Chance
T-storms then
T-storms
 Saturday
Night
Saturday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 74. West northwest wind around 5 mph becoming calm. Chance of precipitation is 80%.
T-storms then
Chance
Showers
 Sunday

Sunday: A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Mostly Sunny
then Chance
T-storms
 Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Calm wind.
Chance
T-storms then
Partly Cloudy
 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: A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm.
Slight Chance
T-storms then
Mostly Clear
Lo 77 °F Hi 94 °F Lo 76 °F Hi 92 °F Lo 74 °F Hi 92 °F Lo 75 °F Hi 94 °F Lo 75 °F

 

Tonight
 
 A 50 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 77. South wind around 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Juneteenth
 
 A 30 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 94. Heat index values as high as 106. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Friday Night
 
 A 10 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 76. West southwest wind around 5 mph.
Saturday
 
 A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 92. West wind 5 to 10 mph. Chance of precipitation is 80%.
Saturday Night
 
 Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Low around 74. West northwest wind around 5 mph becoming calm. Chance of precipitation is 80%.
Sunday
 
 A 40 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Calm wind becoming west around 5 mph in the afternoon.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. Calm wind.
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
 
 A 10 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 75. South wind around 5 mph becoming calm.
Tuesday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 95. Calm wind becoming west around 5 mph in the morning.
Tuesday Night
 
 A 10 percent chance of showers and thunderstorms. Partly cloudy, with a low around 76. Southwest wind around 5 mph becoming calm in the evening.
Wednesday
 
 A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 94. West wind around 5 mph.
Wednesday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 75. West southwest wind around 5 mph becoming calm.
Thursday
 
 A 40 percent chance of showers and thunderstorms. Sunny, with a high near 94. Calm wind becoming west southwest around 5 mph in the afternoon.

 

Forecast from NOAA-NWS for Deltona FL.