Historical weather data, all-time temperature records, and monthly climate averages for Deltona, FL. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in Deltona typically feels like spring is in full swing, with an average high of 82° and a low of 57°. The date has a 69-year spread of surprises, from a scorching 93° in 2017 to a chilly 40° back in 1987. Rain is unlikely today — historically, there's only a 19% chance of any precipitation.
Deltona plays for keeps in the summer heat, topping out at a brutal 103° on July 1, 1998. Winters can occasionally bite, as proven by a record low of 19° on January 21, 1985. The wettest single day on record dumped 11.5 inches during Hurricane Irma's assault on September 11, 2017.
Deltona runs hot for a long stretch — highs stay in the low 90s from June through August, peaking during the week of July 2-8 at an average 92°. If you're chasing cooler weather, mid-January is your best bet, with highs averaging just 69°. The wettest window falls at the tail end of June into early July, when weekly rainfall averages nearly 2 inches.