Baton Rouge (LA) Temperature by Month

Baton Rouge, Louisiana, United States of America has an average annual maximum temperature of 26°C (79°F), ranging from 17°C (63°F) in January to 33°C (91°F) in August. Below you'll find a full monthly breakdown and a comparison with cities worldwide.

Depending on the time of the year, temperatures range from very warm to mild in Baton Rouge. At night, minimum temperatures range from 23°C (73°F) in August to 5°C (41°F) in January.

The chart below illustrates the average maximum day and minimum night temperatures in Baton Rouge by month:

The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. August, the warmest month, gets 270 hours of sunshine.

The chart below shows the average temperature throughout the year:

Baton Rouge's average annual maximum temperature is 26°C (79°F). To put that in context, here's how it compares to a few well-known destinations:

Lisbon, Portugal averages 21°C (70°F) annually, warm summers, mild winters, and rain mainly in the cooler months.

Toronto, Canada averages 13°C (55°F) annually, with cold snowy winters balanced by genuinely warm summers.

Boston, USA averages 16°C (61°F) annually, with four distinct seasons and cold winters that rival northern Europe.

Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.

Temperature alone doesn't tell the whole story, humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.

In Baton Rouge, January is the coolest month, with average highs of 17°C (63°F) and humidity around 73%, considered high. In August, the warmest month, temperatures average 33°C (91°F) with 77% humidity, conditions that feel high. For a full picture, see our humidity page.

Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.

The readings come from a range of sources, land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.

Seasonal temperature shifts influence more than just how warm it feels, they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.

Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Baton Rouge this rarely lasts long on the ground.

For more on Baton Rouge's weather, including monthly rainfall, sunshine hours, and humidity, visit our Baton Rouge climate page.