Overview: Baton Rouge, LABaton Rouge, LA (United States of America) in general has a hot climate. Temperatures during the day are in the range from 17 °C (62 °F) in January to 34 °C (92 °F) in August. The driest month is October with just 8 days of rain, on the contrary, the month when it rains the most is July with 18 days of rain. The highest night temperatures could be experienced in July with 23 °C (73 °F), the lowest in January with 5 °C (41 °F).