Baton Rouge, Louisiana climate: Normal weather by month, frost dates and records

What is the weather like in Baton Rouge each month?

July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 42°F. The most precipitation falls in June (6.45 in), the least in November (3.90 in).

Each month has its own page with the day-by-day normals, the month's records and its recent years:

• Jan
• Feb
• Mar
• Apr
• May
• Jun
• Jul
• Aug
• Sep
• Oct
• Nov
• Dec

When is the best weather to visit Baton Rouge?

Normal highs sit between 65°F and 85°F in February, March, April, October and November. Of those, October has the fewest days with rain (7).

That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.

When is the last frost in Baton Rouge?

In Baton Rouge, the last spring frost (32°F) comes after February 25 in half of years and after March 19 in one year in ten; the first autumn frost comes before November 26 in half of years and before November 7 in one year in ten.

Last spring frost, half of years after

February 251 year in 10 after March 19; 9 in 10 after January 29

First autumn frost, half of years before

November 261 year in 10 before November 7; 9 in 10 before December 19

NOAA puts the median frost-free season at 276 days, and the season without a hard freeze (28°F) at 311 days.

A hard freeze (28°F) comes after February 6 in half of springs and before December 11 in half of autumns.

The USDA's 2023 Plant Hardiness Zone Map puts Baton Rouge in zone 9a across its 14 ZIP code areas (9a in 70820, the largest). By the map's own method, the average of each year's coldest night over 1991-2020, Baton Rouge's NOAA station is in zone 9a: the coldest night of a typical year reaches 23°F (30 complete years).

Frost dates for every NOAA station in Louisiana · Frost dates by ZIP code

What hardiness zone is each Baton Rouge ZIP code in?

The USDA's 2023 map gives each ZIP code area one zone. Baton Rouge's 14 ZIP code areas are all in zone 9a. Each ZIP's frost dates are in the frost tool.

How hot and how cold does it get in Baton Rouge?

In a normal year in Baton Rouge, 96 days a year reach 90°F (1 of them 100°F or more), 18 nights fall to 32°F or colder and 114 days bring measurable precipitation.

Days at 90°F or more

96a normal year

Days at 100°F or more

1a normal year

Nights at 32°F or colder

18a normal year

Days that stay below freezing

fewer than 1high of 32°F or less

Days with 0.01 inch of precipitation

114a normal year

The highest temperature in Baton Rouge's official record (kept by the National Weather Service since 1892) is 110°F, on August 19, 1909; the lowest is 7°F, on January 22, 2025.

The wettest calendar year on that record is 2016, with 90.54 in; the snowiest season is 1894–95, with 12.5 inches.

How sunny is Baton Rouge?

Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Baton Rouge, 4.7 kWh per square metre a day. October is the sunniest month (83%) and February the cloudiest (68%). Among the 459 U.S. places of 50,000 or more, that ranks tied 210th (with 32 others) in sunshine.

How much heating and cooling does Baton Rouge need?

A normal year in Baton Rouge brings 1,534 heating degree days, 71% fewer than the median U.S. place (5,373), and 2,818 cooling degree days, 3.1 times the median (908). Two months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 6,997 growing degree days a year above 50°F.

Has Baton Rouge been warmer than normal lately?

2024 averaged 72.5°F, 4.0°F above the 1991-2020 normal of 68.5°F. 3 of the 4 complete years since 2021 ran warmer than the normal.

Over 103 complete years from 1890 to 2022, the station's annual mean temperature rose at a fitted 0.4°F per century (+0.02°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.

Which places near Baton Rouge share this climate record?

9 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.

• Central, LA30,161 people · 7 mi E
• Zachary, LA20,370 people · 9 mi N
• Baker, LA12,147 people · 3 mi N
• Denham Springs, LA9,321 people · 12 mi E
• Merrydale, LA9,149 people · 3 mi SE
• Walker, LA6,402 people · 17 mi E
• Brownfields, LA5,263 people · 1 mi E
• Monticello, LA4,677 people · 7 mi SE
• Watson, LA1,503 people · 12 mi E

Nearby and next

• Baton Rouge in OctoberThis month day by day, its records and recent years
• Louisiana climateThe statewide normals and every place in the state
• Lsu Ben-Hur Farm, LA12 miles from this station, 67.3°F a year
• Brusly, LA12 miles from this station, 67.3°F a year
• New Roads, LA19 miles from this station, 68.8°F a year
• St. Francisville, LA22 miles from this station, 66.2°F a year
• Compare two placesMonth by month, side by side

Download these normals (CSV) · JSON · How these figures are made