July is one of the warmer months of the year in Deltona, with average highs near 31.7°C and lows around 23.6°C (mean 27.7°C). It is a relatively wet time of year, averaging 167 mm of rainfall and 80% relative humidity across the period.
July is one of the warmer months of the year in Deltona. Across 45 years of records, the warmest July in Deltona was 2024 — when the month averaged 30°C — while the coldest was 1984 at 25.8°C. Typical July days reach 31.7°C with nights near 23.6°C. The long-term trend is warming, about 0.3°C per decade.
July is a relatively wet time of year in Deltona, averaging 167 mm of rainfall. The wettest July on record was 1991 with 260 mm, while the driest was 1992 at 65 mm.
Relative humidity in Deltona during July averages 80%. The most humid July was 1991 at 88%, and the least humid was 1981 at 69%.
July receives about 5.8 kWh/m²/day of solar energy in Deltona. The sunniest July was 2016 at 6.7 kWh/m²/day, and the cloudiest was 1984 at 5.1.
Average wind speed in Deltona during July is 1.5 m/s. The windiest Julys were 1988 and 2000 at 1.9 m/s, while the calmest was 2003 at 1.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 27.3°C | 27.6°C | 27.2°C | 27.8°C | 28.7°C | +1.4°C |
| Avg High | 31.4°C | 31.6°C | 31.0°C | 31.9°C | 33.0°C | +1.6°C |
| Avg Low | 23.2°C | 23.6°C | 23.4°C | 23.7°C | 24.4°C | +1.2°C |
| Avg Rain | 162 mm | 155 mm | 188 mm | 164 mm | 162 mm | 0 mm |
July temperatures in Deltona have risen by about 1.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 19°C (2011) to a record high of 39.8°C (1998).
Rainfall in July is a relatively wet time of year, averaging 167 mm, with a wettest year of 260 mm.
A quieter season to visit Deltona
If your dates are flexible, the more temperate months of April and October tend to be the most comfortable for visiting Deltona. That said, July — with days averaging 31.7°C and nights around 23.6°C (mean 27.7°C) and higher rainfall (167 mm) — can still be rewarding for travellers who don't mind the warmth, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 33.3°C | 28.8°C | 24.4°C | 37.0°C | 21.7°C | 161 mm | 78% | 1.3 m/s | 6 |
| 2024 🔥 | 34.8°C | 30.0°C | 25.2°C | 37.6°C | 24.2°C | 133 mm | 73% | 1.4 m/s | 6 |
| 2023 | 33.0°C | 28.7°C | 24.4°C | 35.7°C | 23.0°C | 181 mm | 80% | 1.5 m/s | 5.6 |
| 2022 | 34.0°C | 29.2°C | 24.4°C | 36.7°C | 23.3°C | 146 mm | 75% | 1.4 m/s | 6.3 |
| 2021 | 31.1°C | 27.4°C | 23.6°C | 33.6°C | 21.8°C | 173 mm | 84% | 1.6 m/s | 5.3 |
| 2020 | 32.0°C | 28.1°C | 24.2°C | 33.9°C | 22.5°C | 178 mm | 80% | 1.7 m/s | 5.5 |
| 2019 | 31.7°C | 27.7°C | 23.7°C | 34.7°C | 22.1°C | 185 mm | 82% | 1.3 m/s | 5.6 |
| 2018 | 30.7°C | 27.1°C | 23.4°C | 33.0°C | 22.0°C | 216 mm | 85% | 1.3 m/s | 5.5 |
| 2017 | 31.4°C | 27.7°C | 23.9°C | 33.7°C | 22.9°C | 240 mm | 84% | 1.3 m/s | 5.5 |
| 2016 | 34.8°C | 29.8°C | 24.8°C | 38.4°C | 23.5°C | 81 mm | 71% | 1.4 m/s | 6.7 |
| 2015 | 32.6°C | 28.1°C | 23.7°C | 35.5°C | 22.0°C | 170 mm | 78% | 1.7 m/s | 5.7 |
| 2014 | 31.4°C | 27.6°C | 23.7°C | 33.0°C | 22.8°C | 211 mm | 82% | 1.3 m/s | 5.7 |
| 2013 | 29.9°C | 26.4°C | 22.9°C | 32.6°C | 21.8°C | 197 mm | 85% | 1.8 m/s | 5.3 |
| 2012 | 31.7°C | 27.4°C | 23.1°C | 34.7°C | 20.8°C | 92 mm | 80% | 1.5 m/s | 6.2 |
| 2011 | 31.8°C | 27.7°C | 23.5°C | 35.2°C | 19.0°C | 132 mm | 80% | 1.4 m/s | 5.8 |
| 2010 | 33.3°C | 28.8°C | 24.2°C | 37.0°C | 21.2°C | 121 mm | 75% | 1.6 m/s | 6 |
| 2009 | 30.5°C | 26.8°C | 23.2°C | 32.8°C | 20.9°C | 152 mm | 86% | 1.4 m/s | 5.6 |
| 2008 | 30.1°C | 26.5°C | 22.8°C | 32.9°C | 21.2°C | 253 mm | 84% | 1.2 m/s | 5.3 |
| 2007 | 31.0°C | 27.3°C | 23.6°C | 33.6°C | 22.4°C | 242 mm | 82% | 1.3 m/s | 5.5 |
| 2006 | 32.1°C | 27.8°C | 23.5°C | 35.2°C | 20.7°C | 122 mm | 76% | 1.5 m/s | 5.8 |
| 2005 | 31.3°C | 27.7°C | 24.2°C | 34.3°C | 22.2°C | 149 mm | 85% | 1.5 m/s | 6.1 |
| 2004 | 31.3°C | 27.5°C | 23.7°C | 33.2°C | 22.2°C | 172 mm | 81% | 1.5 m/s | 6 |
| 2003 | 30.6°C | 26.9°C | 23.3°C | 32.8°C | 22.3°C | 197 mm | 84% | 1.1 m/s | 5.6 |
| 2002 | 30.4°C | 26.8°C | 23.1°C | 34.3°C | 21.4°C | 176 mm | 86% | 1.3 m/s | 5.7 |
| 2001 | 30.4°C | 26.9°C | 23.3°C | 33.3°C | 21.8°C | 248 mm | 84% | 1.8 m/s | 5.2 |
| 2000 | 32.4°C | 27.8°C | 23.3°C | 36.4°C | 21.2°C | 170 mm | 76% | 1.9 m/s | 5.8 |
| 1999 | 31.8°C | 27.6°C | 23.4°C | 36.3°C | 20.9°C | 111 mm | 78% | 1.5 m/s | 6.3 |
| 1998 | 33.9°C | 29.4°C | 24.9°C | 39.8°C | 23.2°C | 179 mm | 73% | 1.6 m/s | 5.8 |
| 1997 | 31.2°C | 27.4°C | 23.6°C | 35.9°C | 22.2°C | 198 mm | 81% | 1.2 m/s | 6.1 |
| 1996 | 31.6°C | 27.3°C | 23.0°C | 34.8°C | 21.5°C | 109 mm | 80% | 1.8 m/s | 6.2 |
| 1995 | 32.0°C | 27.9°C | 23.9°C | 36.0°C | 22.1°C | 149 mm | 78% | 1.6 m/s | 6 |
| 1994 | 29.8°C | 26.3°C | 22.8°C | 32.3°C | 21.8°C | 226 mm | 85% | 1.3 m/s | 5.7 |
| 1993 | 33.2°C | 28.7°C | 24.3°C | 36.3°C | 22.8°C | 107 mm | 73% | 1.3 m/s | 6.3 |
| 1992 | 32.0°C | 27.7°C | 23.3°C | 35.3°C | 22.1°C | 65 mm | 78% | 1.5 m/s | 6.6 |
| 1991 🌧️ | 29.7°C | 26.6°C | 23.5°C | 32.7°C | 22.3°C | 260 mm | 88% | 1.6 m/s | 5.7 |
| 1990 | 31.1°C | 27.3°C | 23.6°C | 34.0°C | 21.8°C | 149 mm | 80% | 1.7 m/s | 5.8 |
| 1989 | 32.4°C | 28.0°C | 23.6°C | 36.4°C | 22.0°C | 110 mm | 74% | 1.6 m/s | 6.2 |
| 1988 | 30.9°C | 27.0°C | 23.1°C | 35.5°C | 20.9°C | 173 mm | 79% | 1.9 m/s | 5.7 |
| 1987 | 32.5°C | 28.1°C | 23.8°C | 36.9°C | 21.8°C | 120 mm | 75% | 1.5 m/s | 6.1 |
| 1986 | 31.8°C | 27.5°C | 23.2°C | 35.4°C | 21.4°C | 174 mm | 77% | 1.6 m/s | 5.7 |
| 1985 | 30.1°C | 26.5°C | 22.8°C | 34.1°C | 21.2°C | 167 mm | 81% | 1.4 m/s | 5.8 |
| 1984 ❄️ | 29.3°C | 25.8°C | 22.2°C | 32.0°C | 20.8°C | 204 mm | 84% | 1.4 m/s | 5.1 |
| 1983 | 31.7°C | 27.5°C | 23.4°C | 34.9°C | 21.3°C | 111 mm | 77% | 1.6 m/s | — |
| 1982 | 29.7°C | 26.3°C | 22.9°C | 31.5°C | 21.5°C | 233 mm | 86% | 1.2 m/s | — |
| 1981 | 33.9°C | 29.0°C | 24.1°C | 38.4°C | 20.5°C | 163 mm | 69% | 1.5 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 31.7°C with lows near 23.6°C (mean 27.7°C), based on 45 years of NASA POWER data.
July averages 167 mm of rainfall in Deltona, a relatively wet time of year. The wettest on record was 260 mm in 1991.
The hottest July reached 39.8°C in 1998. The coldest dipped to 19°C in 2011.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 1.8°C. Daytime highs moved from 30.9°C to 33.2°C and overnight lows from 23.1°C to 24.4°C over the same span.
July is one of the warmer months of the year in Deltona and a relatively wet time of year, so plan for around 31.7°C daytime highs and 23.6°C at night.
Not quite — July is the 12th coolest month in Deltona, averaging 27.7°C.
For July in Deltona, pack light, breathable clothing and sun protection, with typical highs of 31.7°C and lows of 23.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 80% — quite humid.
Average wind speed in July is 1.5 m/s. The windiest July on record averaged 1.9 m/s (1988).
The wettest July on record was 1991 with 260 mm. On average, July sees 167 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Deltona behaves each July, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for July specifically, along with year-by-year records and how the month has changed over the decades.
