Baton Rouge, LA weather in December
Expect cool weather with some rain in Baton Rouge in December, with highs near 64°F and lows near 43°F. Rain falls on about 10 days. It is one of the coolest months in Baton Rouge.
- Normal high
- 64°F
- Normal low
- 43°F
- Wet days
- 10
- 5.3 in total
- Muggy days
- 2
- dew point 65°F+
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 67°F | 62°F |
| Normal low | 45°F | 42°F |
| Chance of a wet day | 29% | 33% |
| Sunrise / sunset | 6:43 am / 5:03 pm | 7:01 am / 5:13 pm |
| Daylight | 10.3 h | 10.2 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical December day
- 6 am49°Fdew point 45°F
- 9 am53°Fdew point 46°F
- Noon60°Fdew point 47°F
- 3 pm62°Fdew point 46°F
- 6 pm57°Fdew point 47°F
- 9 pm53°Fdew point 47°F
NOAA hourly normals (local standard time) from Lafayette Rgnl Airport (53 mi away); average wind 8 mph; clear or few clouds in 53% of daytime hours, mostly cloudy or overcast in 42%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more2 of 31
- Wet daysat least 0.01 in of rain or melted snow10 of 31
- Notable rainat least 0.10 in7 of 31
- Freezing nightslow 32°F or below5 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 5.3 in; a dry December brings about 3.2 in and a wet one about 6.3 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 2 an inch or more. Normal snowfall is 0.2 in.
How December varies from year to year
- Warmest December, 1991-20202015: average high 72°F
- Coolest December2000: average high 56°F
- Wettest December2009: 14.9 in
- Driest December1996: 1.8 in
- Highest reading84°F (December 26, 2015)
- Lowest reading18°F (December 20, 1996)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 71°F | 64°F | 62°F |
| Normal low | 48°F | 43°F | 42°F |
| Wet days | 8 | 10 | 10 |
| Comfortable days | 15 | 10 | 10 |
| Daylight | 10.6 h | 10.2 h | 10.4 h |
Highs change by -7°F from November and -2°F into January.
How Baton Rouge ranks in December
- Normal high85th warmest of 378 cities; 4th of 5 in Louisiana
- Wet days203rd driest of 378
- Comfortable days74th most of 340
What to pack for Baton Rouge in December
- A rain jacket or umbrella – rain on about 10 days
Heating and cooling
December has 369 heating degree days and 21 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How cold is Baton Rouge in December?
The normal high is 64°F and the normal low is 43°F. From 1991 to 2020 the coldest December reading was 18°F (December 20, 1996).
Does it rain a lot in Baton Rouge in December?
About 10 days in December have at least 0.01 in of precipitation, and the normal total is 5.3 in. The wettest December in 1991-2020 was in 2009 (14.9 in); the driest was in 1996 (1.8 in).
Does it snow in Baton Rouge in December?
Yes. Normal snowfall in December is 0.2 in.
Is December a good time to visit Baton Rouge?
December ranks 7th of 12 months on our comfort score for Baton Rouge (55 out of 100). It has about 10 comfortable days. The best months are March, April and November.
Where the numbers come from
- Temperature, rain and frost dates: Baton Rouge Ryan Airport (USW00013970), 6.0 mi N of the city center, 64 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Baton Rouge Sherwood (USC00160558), 6.4 mi E of the city center, 55 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Lafayette Rgnl Airport (USW00013976), 53 mi WSW of the city center, 38 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Lafayette Regional Airport (722405-13976), 53 mi WSW of the city center, 35 ft . Hourly observations, 1991-2020.