Climate averages 1991–2020
Jacksonville weather
in December.
A mild, moderately wet month: the 11th warmest and the joint 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Jacksonville: daytime highs average 18.6°C and nights cool to about 10.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 58 mm of rain on roughly 7 days, which makes December a moderately wet month (the joint 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 14 min on an average December day.
The nearest other city in this atlas is Palm Coast (94 km away). In December its highs average 20.1°C, 1.4°C warmer than Jacksonville, with 51 mm of rain.
Among the 498 cities listed in the United States, Jacksonville ranks 46th of 498 for the warmest December highs and joint 200th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Jacksonville is 8.1°C warmer than that mean.
From December to January, average highs fall by 1.3°C to 17.3°C, and monthly rainfall rises from 58 mm to 66 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Jacksonville climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.3°C8.8°C | 8.8°C | 66 | 7.3 | 10.410 h |
| February | 19.2°C10.3°C | 10.3°C | 63 | 6.9 | 11.111 h |
| March | 22.2°C12.6°C | 12.6°C | 76 | 7.5 | 12.012 h |
| April | 25.6°C15.9°C | 15.9°C | 58 | 6.9 | 12.913 h |
| May | 29.0°C19.6°C | 19.6°C | 66 | 8.9 | 13.714 h |
| June | 30.7°C22.9°C | 22.9°C | 131 | 18.9 | 14.114 h |
| July | 31.7°C24.1°C | 24.1°C | 125 | 20.4 | 13.914 h |
| August | 30.9°C24.1°C | 24.1°C | 141 | 21.6 | 13.213 h |
| September | 29.0°C22.8°C | 22.8°C | 121 | 15.8 | 12.412 h |
| October | 25.7°C18.7°C | 18.7°C | 70 | 9.2 | 11.511 h |
| November | 21.6°C13.7°C | 13.7°C | 42 | 6.0 | 10.711 h |
| December, selected | 18.6°C10.6°C | 10.6°C | 58 | 6.5 | 10.210 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Palm Coast in DecemberUnited States · 94 kmHigh 20.1°C · Low 13.7°C · 51 mm rain
- Gainesville in DecemberUnited States · 99 kmHigh 20.0°C · Low 10.5°C · 60 mm rain
- Daytona Beach in DecemberUnited States · 139 kmHigh 21.2°C · Low 14.0°C · 59 mm rain
- Deltona in DecemberUnited States · 164 kmHigh 21.5°C · Low 13.0°C · 53 mm rain
- Alafaya in DecemberUnited States · 201 kmHigh 21.7°C · Low 13.2°C · 49 mm rain
- Orlando in DecemberUnited States · 201 kmHigh 21.8°C · Low 12.7°C · 50 mm rain
- Savannah in DecemberUnited States · 202 kmHigh 16.4°C · Low 8.1°C · 86 mm rain
- Spring Hill in DecemberUnited States · 223 kmHigh 21.5°C · Low 12.5°C · 61 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Jacksonville) is explained once on the Jacksonville year overview and on the Sources, method and limits page.