Deltona has a warm subtropical climate with warm summers and mild winters.
Temperatures peak in June and drop to their lowest in January, while rainfall is highest during summer months.
Humidity remains high throughout the year, especially in autumn, creating warm and humid conditions.
| Month | 🌤️ | Avg High | Avg Temp | Avg Low | Record High | Record Low | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|---|---|
| January | 🌤️ | 68.8°F | 58.7°F | 48.6°F | 84.9°F | 16.2°F | 78% | 68 | 2.1 | 3.36 |
| February | ☀️ | 72.5°F | 62.2°F | 51.9°F | 89.2°F | 22.8°F | 78% | 66 | 2.1 | 4.07 |
| March | ☔ | 76.9°F | 66.3°F | 55.6°F | 96.1°F | 29.1°F | 74% | 88 | 2.3 | 5.16 |
| April | ☀️ | 82.3°F | 71.5°F | 60.8°F | 97.3°F | 34.3°F | 70% | 68 | 2.2 | 6.06 |
| May | ☔ | 88.3°F | 78.0°F | 67.7°F | 102.0°F | 48.2°F | 68% | 89 | 2.0 | 6.46 |
| June | 🌧️ | 89.3°F | 81.2°F | 73.1°F | 105.1°F | 56.3°F | 76% | 177 | 1.7 | 5.87 |
| July | 🌧️ | 89.0°F | 81.8°F | 74.5°F | 103.6°F | 66.2°F | 80% | 167 | 1.5 | 5.81 |
| August | 🌧️ | 88.5°F | 81.7°F | 74.8°F | 100.2°F | 67.1°F | 82% | 179 | 1.5 | 5.49 |
| September | 🌧️ | 86.0°F | 79.5°F | 72.9°F | 96.4°F | 56.7°F | 83% | 172 | 1.7 | 4.89 |
| October | ☔ | 81.6°F | 73.9°F | 66.2°F | 93.7°F | 36.5°F | 81% | 99 | 1.9 | 4.34 |
| November | ☀️ | 76.0°F | 67.2°F | 58.5°F | 89.6°F | 33.6°F | 80% | 63 | 2.0 | 3.57 |
| December | ☀️ | 71.5°F | 62.0°F | 52.6°F | 86.2°F | 18.5°F | 80% | 64 | 1.9 | 3.07 |
Showing average climate conditions across 45 years (1981–2025)
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Early mornings and evenings are most comfortable during this Hot Summer season.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Monthly averages · 1981–2025 climate normals · °F
Temperatures rise steadily from spring, peak in June, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Monthly rainfall · 1981–2025 seasonal trends · mm/month
Rainfall is concentrated in the summer months. Humidity stays high (around 77%), peaking in autumn, which creates warm and humid conditions.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Monthly averages · 1981–2025
Across 45 years of records, Deltona's temperature shows a slight warming trend over the past decade. Its hottest day reached 105.1°F in June 1998, and its coldest dropped to 16.2°F in January 1985. 2023 was the warmest year overall and 1983 the coolest.
The warmest year in Deltona's recorded history was 2023 (avg: 74.5°F), while the coldest was 1983 (avg: 69.1°F).
Average annual high/low · Last 30 years · °F
Total annual precipitation · Last 30 years · mm/year
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|---|---|
2025 | 83.5°F | 73.6°F | 63.7°F | 98.6°F | 32.9°F | 1147 | 75% | 1.8 m/s |
2024 | 83.1°F | 73.9°F | 64.8°F | 103.5°F | 34.7°F | 1241 | 77% | 1.9 m/s |
2023 🔥 | 83.8°F | 74.5°F | 65.1°F | 98.8°F | 30.7°F | 1278 | 76% | 1.9 m/s |
2022 | 82.6°F | 73.4°F | 64.2°F | 102.2°F | 25.7°F | 1310 | 77% | 1.8 m/s |
2021 | 82.4°F | 73.2°F | 64.0°F | 99.9°F | 33.6°F | 1153 | 77% | 1.8 m/s |
2020 | 82.6°F | 73.9°F | 65.1°F | 97.0°F | 30.2°F | 1215 | 77% | 2.0 m/s |
2019 | 82.0°F | 73.4°F | 64.6°F | 102.0°F | 34.0°F | 1411 | 79% | 1.9 m/s |
2018 | 80.6°F | 72.0°F | 63.5°F | 91.8°F | 24.1°F | 1480 | 81% | 1.8 m/s |
2017 | 82.4°F | 73.4°F | 64.4°F | 100.4°F | 33.1°F | 1450 | 77% | 1.9 m/s |
2016 | 82.4°F | 73.2°F | 64.0°F | 101.1°F | 29.7°F | 1287 | 75% | 1.9 m/s |
Showing 1 to 10 of 45 years
Based on 45 years of data (1981–2025), June is typically the hottest month in Deltona, Florida, with average high temperatures around 89.3°F.
January is the coldest month in Deltona, with average low temperatures around 48.6°F.
August receives the most rainfall with approximately 179 mm, while November is the driest with 63 mm.
The highest recorded temperature was 105.1°F in June 1998. This is part of the historical record spanning 1981–2025.
The lowest recorded temperature was 16.2°F in January 1985.
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
Deltona receives the most sunlight in May with an average solar radiation of 6.46 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning and agriculture in Florida.
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
