Baton Rouge weather in December

In December, Baton Rouge sees average daytime highs of 64°F and overnight lows near 45°F, with 4.5 in of precipitation across 9.4 wet days and about 10.1 hours of daylight. It is the 11th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 66°F in the first days to 61°F by the end. The sky is clear or mostly clear about 34% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 12 min at the start of December to 10 h 06 min by month's end. Set against the rest of the year, December is Baton Rouge's 9th-clearest and 5th-windiest month. For the whole year in context, see Baton Rouge's year-round climate.

Daytime high
64°
11th warmest
Overnight low
45°
2nd coldest
Precipitation
4.5 in
9.4 wet days
Daylight
10 hours
7:00 AM – 5:02 PM
Cloud cover
58%
9th clearest
Wind
7 mph
5th windiest
Solar energy
2.63 kWh/m²
Travel score
5.8
out of 10

Baton Rouge is capital city of the U.S. state of Louisiana and seat of East Baton Rouge Parish.

Density
997/km²
people per km²
Founded
1719

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 66°F in the first days to 61°F by the end.

A typical December day in Baton Rouge reaches about 64°F in the afternoon and slips back to 45°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 51°F and 76°F. Set against its neighbours, December runs about 7°F cooler than November and about 2°F warmer than January.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16746
26646
36646
46646
56546
66546
76545
86545
96545
106445
116445
126445
136445
146445
156444
166344
176344
186344
196344
206344
216244
226244
236244
246244
256244
266244
276244
286244
296144
306144
316144

How December really feels in Baton Rouge

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Baton Rouge weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan61° / 43°4.99.410.35.2
Feb65° / 46°4.58.910.96.0
Mar72° / 52°4.69.811.86.8
Apr78° / 58°4.58.812.77.0
May85° / 66°4.19.513.55.5
Jun89° / 72°4.713.713.93.7
Jul91° / 74°5.217.113.83.1
Aug91° / 74°5.215.713.13.2
Sep88° / 70°3.910.712.24.5
Oct80° / 59°3.47.611.37.1
Nov70° / 50°3.57.710.57.1
Dec64° / 45°4.59.410.15.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25347
35248
45149
55149
65050
74951
84951
94951
104852
114852
124852
134852
144852
154852
164753
174852
184852
194852
204852
214753
224654
234654
244555
254456
264357
274456
284357
294258
304258
314159

Chance of precipitation in December

Any precipitation

Baton Rouge gets around 4.5 in of rain and snow over 9.4 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 30% and peaks near 32% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
429
529
629
729
829
930
1030
1130
1230
1330
1430
1530
1631
1731
1831
1931
2031
2131
2231
2332
2432
2532
2632
2732
2831
2931
3031
3131

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 73% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
169101371
269101371
37091371
47091371
569101371
671101270
771101270
871101270
972101170
1072101170
1172111160
1272111160
1373111060
1473111060
1573111060
1673111060
177411960
187411960
197311961
207311961
217311961
227311961
237311961
247311961
257410961
267410961
277410961
287410961
297410961
30759961
31769951

Wind in December

Winds average 7 mph in December.

Across December, daily wind ranges from about 7 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 12 min at the start of December to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:49 AM to 7:06 AM, and sunset from 5:00 PM to 5:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.26:495:00
210.26:505:00
310.16:515:00
410.16:525:00
510.16:525:00
610.16:535:00
710.16:545:00
810.16:545:00
910.16:555:00
1010.16:565:01
1110.16:565:01
1210.16:575:01
1310.16:585:01
1410.16:585:02
1510.06:595:02
1610.07:005:02
1710.07:005:03
1810.07:015:03
1910.07:015:03
2010.07:025:04
2110.07:025:04
2210.07:035:05
2310.07:035:05
2410.07:045:06
2510.07:045:06
2610.07:045:07
2710.07:055:07
2810.07:055:08
2910.07:065:08
3010.17:065:09
3110.17:065:10

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.63 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.63 kWh/m² to a high of 6.17 kWh/m² in May across the year — December's 2.63 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.9Moderate
22.9Moderate
32.9Moderate
42.8Moderate
52.8Moderate
62.8Moderate
72.8Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.5Moderate
232.5Moderate
242.5Moderate
252.5Moderate
262.5Moderate
272.5Moderate
282.5Moderate
292.5Moderate
302.6Moderate
312.6Moderate
Planning a trip in December

Hazard calendar for Baton Rouge

In seasonPeak

None of Baton Rouge's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Baton Rouge sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Baton Rouge?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.8
Sightseeing
6th-best month of the year
1.7
Beach & pool
11th-best month of the year

December is a reasonable time to visit Baton Rouge for sightseeing.

What to pack for Baton Rouge in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Baton Rouge sees daytime highs around 64°F and nights near 45°F. Worth packing: a warm layer and rain gear. About 9 days see rain.

a warm layerrain gear

UV index in Baton Rouge in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Baton Rouge peaks around July 13 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 13UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr10Very high
May10Very high
Jun10Very high
Jul10Extreme
Aug9Very high
Sep9Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Baton Rouge in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Baton Rouge is worst in July — around 24 µg/m³ PM2.5 (moderate), about 2.8× the cleanest month (January, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1623 µg/m³Jan 249 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar11Good
Apr11Good
May15Moderate
Jun19Moderate
Jul24Moderate
Aug18Moderate
Sep13Moderate
Oct12Good
Nov10Good
Dec9Good
Location & terrain

Where is Baton Rouge?

Baton Rouge sits at 30.4°N, 91.2°W, 46 ft above sea level, in United States. The nearest listed city is Shenandoah, 11 mi away.

Topography around Baton Rouge

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Baton Rouge.

Within 2 miles, the terrain around Baton Rouge has only modest variations in elevation — a maximum elevation change of 89 ft around an average of 39 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 148 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 482 ft.

The land around Baton Rouge is covered by artificial surfaces (35%) and trees (30%) within 2 miles, trees (49%) within 10 miles, and trees (69%) within 50 miles.

2 miles
89 ft
10 miles
148 ft
50 miles
482 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Shenandoah 11 mi · Central 12 mi · Zachary 14 mi · Prairieville 16 mi · Hammond 43 mi · New Iberia 48 mi · Laplace 50 mi · Lafayette 52 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Baton Rouge (30.4433°, -91.1875°, elevation 46 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).