Baton Rouge averages 91.7 days a year above 90°F, with June the wettest month at 6.45 in of normal rain. The hottest day on record was 106°F on Aug 24, 2023; the coldest, 7°F on Jan 22, 2025. The single biggest 24-hour rain event recorded was 11.24 in on Aug 12, 2016.
Climate and Average Weather Year Round in Baton Rouge
Year-round temperature
In Baton Rouge, the warmest months are June through September, with average daily highs between 89°F and 92°F. The coldest stretch runs December through February, with highs between 62°F and 67°F and overnight lows reaching 42°F.
Rainfall through the year
Rainfall in Baton Rouge averages 5.2 in per month over the long run. June is the wettest at 6.5 in, while November is the driest at 3.9 in.
Days at 90 °F or hotter
Baton Rouge averages 91.7 days per year at 90 °F or hotter. The hottest year on record saw 140 such days (2023); the coolest just 3 (2026).
Precipitation this year
As of May 28, Baton Rouge has received 27.3 in of precipitation this year — 9% above the long-term normal for this point in the year (25.0 in).