January is one of the cooler months of the year in Deltona, with average highs near 20.5°C and lows around 9.2°C (mean 14.9°C). It is one of the drier months, averaging 69 mm of rainfall and 78% relative humidity across the period.
January is one of the cooler months of the year in Deltona. Across 45 years of records, the warmest January in Deltona was 2013 — when the month averaged 18.8°C — while the coldest was 2003 at 10.5°C. Typical January days reach 20.5°C with nights near 9.2°C. The long-term trend is warming, about 0.2°C per decade.
January is one of the drier months in Deltona, averaging 69 mm of rainfall. The wettest January on record was 1986 with 172 mm, while the driest was 2012 at 7 mm.
Relative humidity in Deltona during January averages 78%. The most humid January was 1998 at 88%, and the least humid was 1985 at 64%.
January receives about 3.4 kWh/m²/day of solar energy in Deltona. The sunniest January was 2003 at 4.1 kWh/m²/day, and the cloudiest was 1988 at 2.6.
Average wind speed in Deltona during January is 2.1 m/s. The windiest Januarys were 1985 and 2018 at 2.4 m/s, while the calmest were 2002, 2012 and 2023, among others at 1.8 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 13.7°C | 15.9°C | 14.8°C | 14.7°C | 15.2°C | +1.5°C |
| Avg High | 19.4°C | 21.1°C | 20.5°C | 20.4°C | 21.0°C | +1.6°C |
| Avg Low | 8.0°C | 10.7°C | 9.1°C | 8.9°C | 9.4°C | +1.4°C |
| Avg Rain | 77 mm | 88 mm | 46 mm | 86 mm | 31 mm | -46 mm |
January temperatures in Deltona have risen by about 1.9°C between 1981–1985 and 2021–2025.
January has ranged from a record low of -8.8°C (1985) to a record high of 29.4°C (2001).
Rainfall in January is one of the drier months, averaging 69 mm, with a wettest year of 172 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, January — with days averaging 20.5°C and nights around 9.2°C (mean 14.9°C) and moderate rainfall (69 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 18.9°C | 12.7°C | 6.4°C | 27.9°C | 0.5°C | 43 mm | 73% | 2.2 m/s | 3.4 |
| 2024 | 20.1°C | 14.9°C | 9.8°C | 26.8°C | 1.5°C | 60 mm | 85% | 2.2 m/s | 3.1 |
| 2023 | 23.1°C | 16.8°C | 10.5°C | 29.4°C | -0.7°C | 23 mm | 76% | 1.8 m/s | 3.8 |
| 2022 | 20.1°C | 14.6°C | 9.1°C | 28.0°C | -2.7°C | 31 mm | 75% | 2.2 m/s | 3.5 |
| 2021 | 21.4°C | 15.2°C | 9.0°C | 28.0°C | 1.6°C | 15 mm | 76% | 2 m/s | 3.5 |
| 2020 | 22.3°C | 16.9°C | 11.5°C | 27.9°C | -0.4°C | 14 mm | 77% | 2.2 m/s | 3.4 |
| 2019 | 20.0°C | 14.4°C | 8.9°C | 27.3°C | 1.1°C | 99 mm | 81% | 2.2 m/s | 3.5 |
| 2018 | 18.1°C | 12.6°C | 7.2°C | 26.4°C | -4.4°C | 116 mm | 82% | 2.4 m/s | 3.3 |
| 2017 | 24.0°C | 18.0°C | 11.9°C | 29.3°C | 0.6°C | 59 mm | 73% | 2.1 m/s | 3.5 |
| 2016 | 19.6°C | 14.3°C | 9.0°C | 29.0°C | -1.3°C | 162 mm | 77% | 2 m/s | 3.1 |
| 2015 | 19.9°C | 14.7°C | 9.5°C | 27.2°C | 1.4°C | 82 mm | 84% | 2 m/s | 3.4 |
| 2014 | 19.2°C | 13.7°C | 8.1°C | 26.9°C | -0.1°C | 88 mm | 76% | 2.3 m/s | 3.1 |
| 2013 🔥 | 24.6°C | 18.8°C | 13.0°C | 29.3°C | 4.9°C | 15 mm | 76% | 2 m/s | 3.3 |
| 2012 | 22.5°C | 15.9°C | 9.3°C | 27.7°C | -1.7°C | 7 mm | 70% | 1.8 m/s | 3.8 |
| 2011 | 20.1°C | 13.8°C | 7.4°C | 27.2°C | -2.2°C | 122 mm | 76% | 2.1 m/s | 3.5 |
| 2010 | 16.3°C | 10.6°C | 4.9°C | 24.9°C | -4.6°C | 107 mm | 78% | 2.2 m/s | 3.4 |
| 2009 | 20.6°C | 14.3°C | 8.0°C | 26.8°C | -2.8°C | 38 mm | 73% | 1.9 m/s | 3.7 |
| 2008 | 20.7°C | 15.5°C | 10.2°C | 26.2°C | -2.2°C | 81 mm | 78% | 2.1 m/s | 3.3 |
| 2007 | 21.7°C | 17.0°C | 12.3°C | 27.5°C | 0.3°C | 50 mm | 77% | 2 m/s | 3.1 |
| 2006 | 21.5°C | 15.8°C | 10.2°C | 26.8°C | 1.1°C | 17 mm | 77% | 2.1 m/s | 3.7 |
| 2005 | 21.0°C | 15.9°C | 10.8°C | 26.4°C | -0.9°C | 59 mm | 84% | 2.1 m/s | 3.4 |
| 2004 | 21.1°C | 15.1°C | 9.0°C | 27.2°C | 2.5°C | 55 mm | 74% | 1.9 m/s | 3.6 |
| 2003 ❄️ | 16.6°C | 10.5°C | 4.4°C | 23.0°C | -4.3°C | 17 mm | 82% | 2.1 m/s | 4.1 |
| 2002 | 21.0°C | 15.4°C | 9.8°C | 27.1°C | -2.7°C | 62 mm | 82% | 1.8 m/s | 3.3 |
| 2001 | 19.9°C | 13.1°C | 6.3°C | 29.4°C | -2.3°C | 28 mm | 70% | 2.1 m/s | 3.6 |
| 2000 | 21.2°C | 15.4°C | 9.5°C | 26.8°C | -2.3°C | 55 mm | 75% | 2.1 m/s | 3.5 |
| 1999 | 22.8°C | 17.0°C | 11.2°C | 27.4°C | -3.0°C | 108 mm | 78% | 2 m/s | 3.6 |
| 1998 | 20.2°C | 15.5°C | 10.8°C | 26.0°C | 2.2°C | 89 mm | 88% | 2.1 m/s | 3.2 |
| 1997 | 22.3°C | 16.4°C | 10.5°C | 27.6°C | -3.5°C | 48 mm | 74% | 2 m/s | 3.5 |
| 1996 | 19.2°C | 13.3°C | 7.5°C | 25.9°C | -4.7°C | 87 mm | 82% | 2.2 m/s | 3.5 |
| 1995 | 18.3°C | 13.2°C | 8.1°C | 24.2°C | -0.1°C | 56 mm | 85% | 2.1 m/s | 3.2 |
| 1994 | 20.2°C | 15.4°C | 10.5°C | 26.6°C | 1.9°C | 163 mm | 82% | 2.3 m/s | 3 |
| 1993 | 22.4°C | 18.4°C | 14.4°C | 27.0°C | 4.1°C | 128 mm | 87% | 2 m/s | 2.8 |
| 1992 | 19.8°C | 14.3°C | 8.9°C | 25.2°C | -1.2°C | 83 mm | 77% | 2 m/s | 3.2 |
| 1991 | 23.4°C | 18.2°C | 13.1°C | 28.4°C | 2.7°C | 85 mm | 79% | 2.2 m/s | 3 |
| 1990 | 22.2°C | 17.0°C | 11.8°C | 26.7°C | 1.6°C | 35 mm | 83% | 1.9 m/s | 3.4 |
| 1989 | 23.7°C | 18.3°C | 12.8°C | 27.2°C | 4.9°C | 105 mm | 82% | 1.9 m/s | 3.6 |
| 1988 | 18.5°C | 13.7°C | 8.9°C | 25.7°C | -1.6°C | 129 mm | 81% | 2.2 m/s | 2.6 |
| 1987 | 19.2°C | 13.4°C | 7.7°C | 27.2°C | -0.8°C | 67 mm | 81% | 2.3 m/s | 3.1 |
| 1986 🌧️ | 18.8°C | 13.5°C | 8.2°C | 23.6°C | -6.7°C | 172 mm | 83% | 1.9 m/s | 3.2 |
| 1985 | 19.2°C | 12.3°C | 5.4°C | 28.5°C | -8.8°C | 23 mm | 64% | 2.4 m/s | 3.6 |
| 1984 | 18.8°C | 14.1°C | 9.4°C | 25.1°C | 1.7°C | 49 mm | 87% | 2.2 m/s | 3.1 |
| 1983 | 19.2°C | 13.5°C | 7.9°C | 25.4°C | -0.7°C | 76 mm | 79% | 1.8 m/s | — |
| 1982 | 20.0°C | 14.1°C | 8.3°C | 27.0°C | -5.1°C | 64 mm | 79% | 2 m/s | — |
| 1981 | 17.4°C | 10.6°C | 3.7°C | 23.2°C | -5.6°C | 10 mm | 66% | 2 m/s | — |
Actual recorded January data for each year, 1981–2025 — sourced from NASA POWER.
The average high in January is around 20.5°C with lows near 9.2°C (mean 14.9°C), based on 45 years of NASA POWER data.
January averages 69 mm of rainfall in Deltona, one of the drier months. The wettest on record was 172 mm in 1986.
The hottest January reached 29.4°C in 2001. The coldest dipped to -8.8°C in 1985.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average January temperatures have risen by about 1.9°C. Daytime highs moved from 18.9°C to 20.7°C and overnight lows from 6.9°C to 9°C over the same span.
January is one of the cooler months of the year in Deltona and one of the drier months, so plan for around 20.5°C daytime highs and 9.2°C at night.
Yes — January is the coldest month of the year in Deltona, averaging 14.9°C.
For January in Deltona, pack light layers you can adjust through the day, with typical highs of 20.5°C and lows of 9.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in January averages 78% — quite humid.
Average wind speed in January is 2.1 m/s. The windiest January on record averaged 2.4 m/s (1985).
The wettest January on record was 1986 with 172 mm. On average, January sees 69 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 January, 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 January specifically, along with year-by-year records and how the month has changed over the decades.
