Deltona, Sunday, 9 August, 11:10
Overcast. Feels like 100°. High 89°, low 76°.
In September, Deltona, FL averages a high of 85.3° and a low of 73.2°. About 5.9 inches of precipitation fall over the month (19 wet days). The record high is 95.4° (2023) and the record low 59.7° (1981). Normals are computed over the last 60 years.
| Day | High | Low | Chance of precip. | Record high | Record low |
|---|---|---|---|---|---|
| 1 | 86.7° | 74.5° | 72% | 92.3° (1998) | 68.7° (1966) |
| 2 | 86.5° | 74.3° | 68% | 92.3° (1970) | 70.3° (1982) |
| 3 | 86.7° | 74.1° | 63% | 92.5° (2013) | 67.6° (1999) |
| 4 | 86.4° | 73.9° | 70% | 91.8° (2010) | 69.8° (1967) |
| 5 | 86.4° | 74.1° | 63% | 94.1° (2019) | 68° (2023) |
| 6 | 86.2° | 74.1° | 77% | 93.9° (2023) | 70.2° (1997) |
| 7 | 86° | 73.8° | 78% | 95.4° (2023) | 68.4° (1990) |
| 8 | 85.8° | 73.4° | 68% | 92.3° (2019) | 66.4° (1972) |
| 9 | 85.3° | 73.8° | 75% | 90.9° (1990) | 67.1° (1972) |
| 10 | 85.8° | 73.8° | 67% | 91.8° (2023) | 70.3° (1963) |
| 11 | 85.6° | 73.8° | 67% | 91.6° (2022) | 69.3° (2005) |
| 12 | 85.1° | 73.6° | 75% | 92.5° (2010) | 67.6° (2003) |
| 13 | 85.1° | 73.4° | 65% | 90.3° (2005) | 68.7° (2003) |
| 14 | 85.8° | 73.6° | 60% | 90.3° (1991) | 67.1° (1964) |
| 15 | 86° | 73.2° | 60% | 91.4° (1972) | 64° (1976) |
| 16 | 86° | 73.2° | 62% | 91.2° (1972) | 64.2° (1976) |
| 17 | 85.5° | 73° | 62% | 93.2° (2019) | 63.9° (2001) |
| 18 | 85.3° | 73.2° | 63% | 90.9° (1987) | 67.3° (1967) |
| 19 | 84.9° | 72.9° | 58% | 91.2° (1972) | 62.6° (1981) |
| 20 | 84.6° | 72.9° | 62% | 88.9° (1990) | 59.7° (1981) |
| 21 | 85.1° | 72.9° | 62% | 91.6° (1990) | 66° (1981) |
| 22 | 84.9° | 73° | 55% | 91.8° (1990) | 67.3° (1972) |
| 23 | 84.6° | 72.3° | 65% | 89.8° (1980) | 63.7° (1964) |
| 24 | 84.7° | 72.1° | 57% | 92.3° (2025) | 63.5° (1966) |
| 25 | 84.6° | 72.5° | 68% | 92.3° (2006) | 66.9° (1967) |
| 26 | 84.4° | 72.9° | 68% | 89.8° (1980) | 65.7° (2008) |
| 27 | 84.4° | 72.5° | 55% | 90.5° (2019) | 62.1° (1982) |
| 28 | 84° | 72.3° | 52% | 88.9° (1986) | 64.4° (2006) |
| 29 | 83.3° | 72° | 63% | 90.3° (1980) | 60.6° (1962) |
| 30 | 83.1° | 71.4° | 52% | 90.3° (1980) | 62.8° (2022) |