Photo: Spatms · CC BY-SA 4.0Few U.S. towns get more rain and snow than Baton Rouge: 63 inches a year
In July the day’s top temperature is typically 92°. Winter and summer sit 51° apart. Winters are mild: January nights here are milder than in 90% of U.S. towns. The frost-free window for a garden runs roughly February 25 to November 26.
A year in Baton Rouge at a glance
Each month’s typical high and low, and what it brings.
What stands out about Baton Rouge’s climate
Compared with towns across the U.S., with Baton Rouge’s place in Louisiana beside it.
What a year in Baton Rouge feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 276 frost-free days a year
In half of years the last 32° night comes by February 25 and the first by November 26. Frost and day counts come from NOAA’s station at Baton Rouge Ryan Airport, 7 miles from the city’s center point, at about the same height.
The 2023 USDA map puts Baton Rouge’s center in zone 9a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 23°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 63 inches of rain a year
June is the wettest month and November the driest. Rain falls on about 114 days a year. Snow is rare: about 0.2" in a normal year at Baton Rouge Ryan Airport, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Baton Rouge
35% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55°: December and January.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Baton Rouge Ryan Airport.
Living with Baton Rouge’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
276 frost-free days in zone 9a. The last frost comes by Feb 25 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 26.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, October, November and December. 27 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Baton Rouge from natural hazards, river flooding is the largest share (31%); heat waves, cold waves, winter storms and ice storms together are 15%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Baton Rouge and its neighbors
Every town next door is within a degree of Baton Rouge in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Baton Rouge’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Baton Rouge, LA | 41° | 92° | 63" | 0.2" |
| Satsuma, AL | 40° | 91° | 64" | 0.2" |
| Milton, FL | 41° | 91° | 63" | 0.1" |
| Vidor, TX | 42° | 92° | 61" | 0.1" |
| Moss Point, MS | 41° | 90° | 66" | 0.1" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Baton Rouge averaged 0.7° warmer than the 1900s. The biggest change is in February (+1.3°).
A smaller shift than in 94% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods. In a city of 223,000 people, part of the change is the city itself: pavement and buildings hold heat (the urban heat island).
How Baton Rouge compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Baton Rouge’s place among Louisiana’s.
Baton Rouge weather by month
Highs, lows and precipitation from NOAA’s grid at Baton Rouge’s center; snow, wet days and snow on the ground from Baton Rouge Ryan Airport. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 62° | 41° | 6.2" | 0.0" | 10 | 0 | 44° – 58° |
| February | 66° | 45° | 4.8" | 0.0" | 9 | 0 | 46° – 64° |
| March | 73° | 50° | 4.6" | 0.0" | 9 | 0 | 56° – 70° |
| April | 79° | 57° | 5.1" | 0.0" | 8 | 0 | 62° – 72° |
| May | 86° | 64° | 5.6" | 0.0" | 8 | 0 | 71° – 78° |
| June | 90° | 71° | 6.5" | 0.0" | 12 | 0 | 78° – 83° |
| July | 92° | 73° | 6.0" | 0.0" | 13 | 0 | 80° – 85° |
| August | 92° | 72° | 6.1" | 0.0" | 12 | 0 | 79° – 85° |
| September | 88° | 68° | 4.5" | 0.0" | 9 | 0 | 75° – 82° |
| October | 81° | 57° | 4.7" | 0.0" | 7 | 0 | 65° – 75° |
| November | 71° | 48° | 4.1" | 0.0" | 8 | 0 | 54° – 64° |
| December | 64° | 43° | 5.4" | 0.2" | 10 | 0 | 46° – 61° |
| Year | 79° | 57° | 63.4" | 0.2" | 114 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 46° to 64°. July is the most reliable, staying within 5°.
Where Baton Rouge’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Baton Rouge’s center.
- Snow: Baton Rouge Ryan Airport (the official station).
- Frost, freezing nights, 90° and 100° days, heating and cooling: Baton Rouge Ryan Airport, 7 miles from the city’s center point, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Baton Rouge’s climate
What is the weather like in Baton Rouge?
A typical July afternoon reaches 92°, a January night drops to 41°, and snow is almost unheard of. Milder January nights than 90% of U.S. towns; hotter July afternoons than 85% of U.S. towns.
How cold does it get in Baton Rouge in winter?
January nights average 41°. About 18 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 44°.
How much snow does Baton Rouge get?
About 0.2 inches in a normal winter at Baton Rouge Ryan Airport, so most winters see none.
How hot does it get in Baton Rouge?
July, with a typical high of 92° and a low of 73°. About 96 days a year reach 90° and 1 reach 100° (Baton Rouge Ryan Airport).
When is the first and last frost in Baton Rouge?
In half of years the last spring frost (32°) comes by February 25 and the first fall frost by November 26, about 276 frost-free days, at Baton Rouge Ryan Airport.
What growing zone is Baton Rouge in?
Zone 9a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 23°.
What is the best time of year to visit Baton Rouge?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Baton Rouge getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 94% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Baton Rouge.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.