Climate averages 1991–2020
Jackson weather
in December.
A cool, wet month: the 11th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Jackson: daytime highs average 14.4°C and nights cool to about 4.8°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 119 mm of rain on roughly 9 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 05 min on an average December day.
The nearest other city in this atlas is Baton Rouge (227 km away). In December its highs average 17.1°C, 2.7°C warmer than Jackson, with 112 mm of rain.
Among the 498 cities listed in the United States, Jackson ranks joint 152nd of 498 for the warmest December highs and joint 454th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Jackson is 3.9°C warmer than that mean.
From December to January, average highs fall by 1.2°C to 13.2°C, and monthly rainfall rises from 119 mm to 121 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
Jackson climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 13.2°C3.6°C | 3.6°C | 121 | 9.7 | 10.310 h |
| February | 15.6°C5.2°C | 5.2°C | 120 | 9.8 | 11.011 h |
| March | 19.5°C8.8°C | 8.8°C | 121 | 10.4 | 12.012 h |
| April | 23.7°C12.7°C | 12.7°C | 114 | 8.6 | 13.013 h |
| May | 28.1°C17.3°C | 17.3°C | 104 | 9.7 | 13.814 h |
| June | 31.4°C21.3°C | 21.3°C | 87 | 11.4 | 14.214 h |
| July | 32.5°C23.0°C | 23.0°C | 102 | 13.8 | 14.014 h |
| August | 32.6°C22.7°C | 22.7°C | 95 | 11.5 | 13.313 h |
| September | 30.4°C19.9°C | 19.9°C | 83 | 7.3 | 12.412 h |
| October | 25.1°C14.0°C | 14.0°C | 91 | 7.4 | 11.411 h |
| November | 18.6°C8.1°C | 8.1°C | 92 | 7.8 | 10.511 h |
| December, selected | 14.4°C4.8°C | 4.8°C | 119 | 9.4 | 10.110 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
- Baton Rouge in DecemberUnited States · 227 kmHigh 17.1°C · Low 8.1°C · 112 mm rain
- Gulfport in DecemberUnited States · 238 kmHigh 16.2°C · Low 9.5°C · 115 mm rain
- Metairie in DecemberUnited States · 257 kmHigh 17.2°C · Low 10.4°C · 98 mm rain
- New Orleans in DecemberUnited States · 261 kmHigh 17.1°C · Low 10.5°C · 96 mm rain
- Tuscaloosa in DecemberUnited States · 265 kmHigh 13.6°C · Low 4.5°C · 129 mm rain
- Mobile in DecemberUnited States · 270 kmHigh 16.6°C · Low 8.6°C · 115 mm rain
- Lafayette (Louisiana), United States in DecemberUnited States · 289 kmHigh 17.3°C · Low 8.5°C · 112 mm rain
- Memphis in DecemberUnited States · 317 kmHigh 10.9°C · Low 2.4°C · 126 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 Jackson) is explained once on the Jackson year overview and on the Sources, method and limits page.