Climate averages 1991–2020

Baton Rouge weather
in January.

A mild, wet month: the coolest and the 10th driest of the year.

Long-term climate patterns, not a forecast for a particular trip.

Average high 15.9°C Daytime mean, January

Average low 6.9°C Night-time mean, January

Rainfall 124 mm 9 days with ≥1 mm

Daylight 10 h Sunrise to sunset, per day

January is a mild month in Baton Rouge: daytime highs average 15.9°C and nights cool to about 6.9°C. By daytime temperature it is the coolest month of the year.

Expect about 124 mm of rain on roughly 9 days, which makes January a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 25 min on an average January day.

The nearest other city in this atlas is Lafayette (Louisiana), United States (84 km away). In January its highs average 16.1°C, about as warm as Baton Rouge, with 127 mm of rain.

Among the 498 cities listed in the United States, Baton Rouge ranks joint 125th of 498 for the warmest January highs and 464th of 498 for the driest January (rainfall, lowest first). The mean January high of those 498 cities is 9.5°C; Baton Rouge is 6.4°C warmer than that mean.

From January to February, average highs rise by 2.2°C to 18.1°C, and monthly rainfall falls from 124 mm to 115 mm.

The annual picture

January in context

30-year average

Average highAverage low°C

Monthly rainfall

Average total · mm

Averages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated

Every month, side by side

Baton Rouge climate table

1991–2020

Monthly climate averages for Baton Rouge, 1991–2020
Month	Average highHigh / low	Average low	Rainfall mm/month	Rain days ≥1 mm/day	Daylight hours/dayDaylight h/day
January, selected	15.9°C6.9°C	6.9°C	124	9.4	10.410 h
February	18.1°C8.7°C	8.7°C	115	8.9	11.111 h
March	21.4°C11.7°C	11.7°C	118	9.8	12.012 h
April	25.0°C15.2°C	15.2°C	115	8.8	12.913 h
May	28.9°C19.5°C	19.5°C	105	9.5	13.714 h
June	31.3°C22.9°C	22.9°C	120	13.6	14.114 h
July	31.9°C24.1°C	24.1°C	132	17.0	13.914 h
August	32.0°C24.0°C	24.0°C	133	15.7	13.213 h
September	30.1°C21.8°C	21.8°C	100	10.7	12.412 h
October	26.2°C16.7°C	16.7°C	86	7.6	11.511 h
November	20.8°C11.3°C	11.3°C	89	7.7	10.611 h
December	17.1°C8.1°C	8.1°C	112	9.3	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

January in nearby cities

Distance from Baton Rouge

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 limits

How these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Baton Rouge) is explained once on the Baton Rouge year overview and on the Sources, method and limits page.