| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 21.5° | 9.4° | 62.6mm | 7.5 | 85 |
| February | 23.3° | 11.1° | 59mm | 6.7 | 87 |
| March | 25.8° | 13.3° | 74.6mm | 6.5 | 87 |
| April | 28.3° | 16.1° | 68.6mm | 6.7 | 81 |
| May | 31.2° | 19.5° | 83.8mm | 8.1 | 67 |
| June | 32.8° | 22.4° | 203.7mm | 15.7 | 47 |
| July | 33.6° | 23.5° | 199.2mm | 16 | 44 |
| August | 33.6° | 23.7° | 209.9mm | 17.2 | 44 |
| September | 32.1° | 23° | 183.8mm | 14.2 | 51 |
| October | 29.3° | 19.4° | 100.6mm | 8.7 | 73 |
| November | 25.4° | 14.9° | 56mm | 7 | 86 |
| December | 22.8° | 11.6° | 65mm | 7 | 86 |
January in Deltona averages a daily high of 21.5°C with nights around 9.4°C. Expect roughly 7.5 wet days totalling 62.6mm. Comfortable conditions for being outdoors all day.
February in Deltona averages a daily high of 23.3°C with nights around 11.1°C. Expect roughly 6.7 wet days totalling 59mm. Comfortable conditions for being outdoors all day.
March in Deltona averages a daily high of 25.8°C with nights around 13.3°C. Expect roughly 6.5 wet days totalling 74.6mm. Comfortable conditions for being outdoors all day.
April in Deltona averages a daily high of 28.3°C with nights around 16.1°C. Expect roughly 6.7 wet days totalling 68.6mm. Comfortable conditions for being outdoors all day.
May in Deltona averages a daily high of 31.2°C with nights around 19.5°C. Expect roughly 8.1 wet days totalling 83.8mm. Generally workable, with some weather to plan around.
June in Deltona averages a daily high of 32.8°C with nights around 22.4°C. Expect roughly 15.7 wet days totalling 203.7mm. Demanding conditions — pack for it and plan indoor options.
July in Deltona averages a daily high of 33.6°C with nights around 23.5°C. Expect roughly 16 wet days totalling 199.2mm. Demanding conditions — pack for it and plan indoor options.
August in Deltona averages a daily high of 33.6°C with nights around 23.7°C. Expect roughly 17.2 wet days totalling 209.9mm. Demanding conditions — pack for it and plan indoor options.
September in Deltona averages a daily high of 32.1°C with nights around 23°C. Expect roughly 14.2 wet days totalling 183.8mm. Demanding conditions — pack for it and plan indoor options.
October in Deltona averages a daily high of 29.3°C with nights around 19.4°C. Expect roughly 8.7 wet days totalling 100.6mm. Generally workable, with some weather to plan around.
November in Deltona averages a daily high of 25.4°C with nights around 14.9°C. Expect roughly 7 wet days totalling 56mm. Comfortable conditions for being outdoors all day.
December in Deltona averages a daily high of 22.8°C with nights around 11.6°C. Expect roughly 7 wet days totalling 65mm. Comfortable conditions for being outdoors all day.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Deltona peaks at 87.
Based on 30 years of records, November–April scores highest for comfort in Deltona, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 33.6°C.
August is the wettest, averaging 209.9mm of rain across roughly 17.2 wet days.
January is the coolest month, with average daily highs around 21.5°C.