Baton Rouge weather in December: Baton Rouge, Louisiana: normal highs, lows, rain and records for December
Baton Rouge in December has a normal high of 64°F and a normal low of 43°F, a daily mean of 54°F, falling from 67°F on the 1st to 62°F by the 31st. Measurable precipitation falls on 10 days in a normal December, 5.32 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 18°C and low of 6°C, 135 mm of precipitation and 1 cm of snow in December.
- NOAA stationBaton Rouge Metro Airport
- Station IDUSW00013970
- Location30.54°N 91.15°W
- Elevation64 ft (20 m)
- From the center7 miles
- Population220,907
- Jan 62° 42°
- Feb 67° 45°
- Mar 73° 51°
- Apr 79° 57°
- May 86° 65°
- Jun 91° 72°
- Jul 92° 74°
- Aug 92° 73°
- Sep 89° 69°
- Oct 81° 58°
- Nov 71° 48°
- Dec 64° 43°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Baton Rouge in December?
The normal high is 64°F and the normal low 43°F, for a daily mean of 53.8°F. December is 5.6°F cooler than November and 1.8°F warmer than January. December is the 11th warmest month of the year in Baton Rouge and the 4th wettest, and the snowiest. Across the month the normal high falls 5°F, from 67°F on December 1 to 62°F on December 31. From one year to the next December's mean temperature typically moves about 3.2°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 51°F and 57°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 33%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 67°F | 45°F | 29% | 19% |
| December 8 | 66°F | 44°F | 30% | 20% |
| December 15 | 64°F | 43°F | 31% | 21% |
| December 22 | 63°F | 43°F | 32% | 22% |
| December 31 | 62°F | 42°F | 33% | 22% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 67°F | 45°F | 29% | 19% | 10 h 20 min |
| December 2 | 67°F | 45°F | 29% | 19% | 10 h 20 min |
| December 3 | 67°F | 45°F | 29% | 19% | 10 h 20 min |
| December 4 | 66°F | 45°F | 29% | 20% | 10 h 20 min |
| December 5 | 66°F | 44°F | 30% | 20% | 10 h 20 min |
| December 6 | 66°F | 44°F | 30% | 20% | 10 h 20 min |
| December 7 | 66°F | 44°F | 30% | 20% | 10 h 20 min |
| December 8 | 66°F | 44°F | 30% | 20% | 10 h 10 min |
| December 9 | 65°F | 44°F | 30% | 21% | 10 h 10 min |
| December 10 | 65°F | 44°F | 30% | 21% | 10 h 10 min |
| December 11 | 65°F | 44°F | 30% | 21% | 10 h 10 min |
| December 12 | 65°F | 44°F | 31% | 21% | 10 h 10 min |
| December 13 | 65°F | 44°F | 31% | 21% | 10 h 10 min |
| December 14 | 65°F | 44°F | 31% | 21% | 10 h 10 min |
| December 15 | 64°F | 43°F | 31% | 21% | 10 h 10 min |
| December 16 | 64°F | 43°F | 31% | 22% | 10 h 10 min |
| December 17 | 64°F | 43°F | 31% | 22% | 10 h 10 min |
| December 18 | 64°F | 43°F | 32% | 22% | 10 h 10 min |
| December 19 | 64°F | 43°F | 32% | 22% | 10 h 10 min |
| December 20 | 64°F | 43°F | 32% | 22% | 10 h 10 min |
| December 21 | 63°F | 43°F | 32% | 22% | 10 h 10 min |
| December 22 | 63°F | 43°F | 32% | 22% | 10 h 10 min |
| December 23 | 63°F | 43°F | 32% | 22% | 10 h 10 min |
| December 24 | 63°F | 43°F | 32% | 22% | 10 h 10 min |
| December 25 | 63°F | 42°F | 32% | 22% | 10 h 10 min |
| December 26 | 63°F | 42°F | 32% | 22% | 10 h 10 min |
| December 27 | 63°F | 42°F | 33% | 22% | 10 h 10 min |
| December 28 | 63°F | 42°F | 33% | 22% | 10 h 10 min |
| December 29 | 62°F | 42°F | 33% | 22% | 10 h 10 min |
| December 30 | 62°F | 42°F | 33% | 22% | 10 h 10 min |
| December 31 | 62°F | 42°F | 33% | 22% | 10 h 10 min |
- Normal high
- 64°FDecember average
- Normal low
- 43°FDecember average
- Precipitation
- 5.32 inmonth total
- Days with precipitation
- 100.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 5
- Daylight
- 10 h 20 min to 10 h 10 minDecember 1 to December 31
- Days at 70°F or more
- 11
- Days at 80°F or more
- 2
- Sunshine
- 70%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00013970; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Baton Rouge in December?
On a given December day the chance of 0.01 inch or more is 31% on average, highest around December 29 (33%). In all, 5.32 in falls on 10 days of a normal December, 2 of them with an inch or more.
In a normal December in Baton Rouge, 5 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00013970.
What are the records for December in Baton Rouge?
The warmest December temperature on Baton Rouge's official record (since 1892) is 88°F, on December 8, 1894; the coldest is 8°F, on December 23, 1989. The wettest December brought 17.59 in (1912); the snowiest, 3.0 inches (2008).
The December mean against the 1991-2020 normal of 53.8°F: 2021 63.9°F (+10.1), 2022 57.0°F (+3.2), 2023 56.4°F (+2.6), 2024 58.4°F (+4.6), 2025 55.7°F (+1.9). 5 of 5 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 63.9°F | +10.1°F | 3.49 in |
| 2022 | 57.0°F | +3.2°F | 7.25 in |
| 2023 | 56.4°F | +2.6°F | 6.49 in |
| 2024 | 58.4°F | +4.6°F | 7.28 in |
| 2025 | 55.7°F | +1.9°F | 6.40 in |
Source: records: ACIS, NWS threaded record BTRthr; recent months: ACIS, station USW00013970. Records and recent months use complete months only.
How does December in Baton Rouge compare across Louisiana?
Across the 65 places PlainClimate covers in Louisiana, December normal highs run from 56°F in Bastrop to 66°F in Houma; Baton Rouge's is 64°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Baton Rouge in November71°F by day, 48°F at night
- Baton Rouge in January62°F by day, 42°F at night
- Baton Rouge through the yearEvery month, frost dates, records and recent years
- Louisiana in DecemberThe statewide normal and the warmest and coolest places
- Houma: Louisiana's warmest Decembernormal high 66°F