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Deerfield Beach weather by month
Historical averages 2016–2025 · not a forecast
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When is the best time to visit Deerfield Beach?
For a warm holiday, the best week has been 27 March – 2 April (Weather Index 94). Favourable start dates for a 7-day trip run from 7 March to 26 April. July, August and September are warmest (32°C), March is driest and April has the most sun.
- Warmest
- July, August and September 32°C
- Coolest
- January 24°C
- Driest
- March 20% rain-day chance
- Wettest
- August 87% rain-day chance
- Sunniest
- April 12 hours a day
A rain day has 1 mm or more, snow included, so a short shower counts. Monthly averages below give the amounts.
Monthly averages in Deerfield Beach
Deerfield Beach historical monthly estimates, 2016–2025. Temperatures and sunshine are daily averages.
| Month | High (°C) | Low (°C) | Rain-day chance (%) | Expected rain days | Precipitation (mm/month) | Sunshine (hours/day) |
|---|---|---|---|---|---|---|
| January | 24.2 | 15.8 | 22.6 | 7.0 | 50.9 | 8.7 |
| February | 26.3 | 18.5 | 20.7 | 5.8 | 36.6 | 10.0 |
| March | 27.3 | 19.1 | 19.7 | 6.1 | 44.1 | 10.4 |
| April | 28.8 | 21.3 | 30.3 | 9.1 | 70.4 | 11.6 |
| May | 30.3 | 23.4 | 49.0 | 15.2 | 135.5 | 11.4 |
| June | 31.2 | 25.0 | 80.3 | 24.1 | 262.6 | 10.4 |
| July | 32.3 | 25.8 | 80.0 | 24.8 | 198.0 | 11.1 |
| August | 32.3 | 26.0 | 87.1 | 27.0 | 220.4 | 10.7 |
| September | 31.6 | 25.2 | 78.7 | 23.6 | 239.0 | 9.8 |
| October | 29.7 | 23.8 | 57.1 | 17.7 | 133.5 | 9.6 |
| November | 27.3 | 20.4 | 31.3 | 9.4 | 76.5 | 9.0 |
| December | 25.6 | 18.0 | 24.2 | 7.5 | 48.3 | 8.8 |
Each month averages its own days. Precipitation includes snow. About the data
Sources
Open-Meteo · 1 Jan 2016 – 31 Dec 2025
- Open-Meteo Historical Weather API
- Local days, 2016–2025, every year weighted equally. Each weekly chart averages its own seven days, without smoothing.
- Shading shows the 10th–90th percentile of past days, not forecast confidence.
- A rain day has at least 1 mm, snow included. The last weekly period has eight days.
- Wind is the average daytime (10:00–18:00) maximum, not gusts. Daylight is calculated from latitude. Missing readings stay blank.
- Mugginess (dew point) comes from the original daily summaries, on UTC days.
- The live two-week forecast comes from the Open-Meteo Weather Forecast API. The Weather Index does not use it.