Climate averages 1991–2020
Baton Rouge weather
by month.
See how the year changes. August has the highest average daily maximum; October has the lowest average monthly rainfall.
Pleasant-weather months by our simple rule: OctoberNovember
Long-term climate patterns, not a forecast for a particular trip.
Across the year Baton Rouge averages a daytime high of 24.9°C and a nighttime low of 15.9°C, with about 1,349 mm of rain on roughly 128 days. August is the warmest month (average high 32.0°C) and January the coolest (15.9°C). August is the wettest month with 133 mm; October is the driest with 86 mm.
Months with pleasant weather by a simple rule (average high between 18°C and 29°C, average low of at least 5°C and at most 8 rain days): October and November. This looks at temperature and rain only, not humidity, wind, sea temperature or crowds.
The annual picture
A year in Baton Rouge
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Baton Rouge climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 15.9°C6.9°C | 6.9°C | 124 | 9.4 | 10.410 h |
| February | 18.1°C8.7°C | 8.7°C | 115 | 8.9 | 11.111 h |
| March | 21.4°C11.7°C | 11.7°C | 118 | 9.8 | 12.012 h |
| April | 25.0°C15.2°C | 15.2°C | 115 | 8.8 | 12.913 h |
| May | 28.9°C19.5°C | 19.5°C | 105 | 9.5 | 13.714 h |
| June | 31.3°C22.9°C | 22.9°C | 120 | 13.6 | 14.114 h |
| July | 31.9°C24.1°C | 24.1°C | 132 | 17.0 | 13.914 h |
| August | 32.0°C24.0°C | 24.0°C | 133 | 15.7 | 13.213 h |
| September | 30.1°C21.8°C | 21.8°C | 100 | 10.7 | 12.412 h |
| October | 26.2°C16.7°C | 16.7°C | 86 | 7.6 | 11.511 h |
| November | 20.8°C11.3°C | 11.3°C | 89 | 7.7 | 10.611 h |
| December | 17.1°C8.1°C | 8.1°C | 112 | 9.3 | 10.210 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
Nearby cities
- Lafayette (Louisiana), United StatesUnited States · 84 kmHigh 25.0°C · Low 16.2°C · 1,295 mm rain a year
- MetairieUnited States · 112 kmHigh 24.3°C · Low 17.8°C · 1,338 mm rain a year
- New OrleansUnited States · 120 kmHigh 24.1°C · Low 17.8°C · 1,349 mm rain a year
- Lake CharlesUnited States · 195 kmHigh 24.9°C · Low 16.3°C · 1,360 mm rain a year
- GulfportUnited States · 201 kmHigh 23.5°C · Low 17.1°C · 1,479 mm rain a year
- JacksonUnited States · 227 kmHigh 23.8°C · Low 13.4°C · 1,248 mm rain a year
- BeaumontUnited States · 283 kmHigh 24.9°C · Low 16.4°C · 1,344 mm rain a year
- MobileUnited States · 302 kmHigh 24.0°C · Low 16.2°C · 1,377 mm rain a year
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsWhat do the high and low temperatures mean?
We average the daily maximum and daily minimum for each calendar month over 1991–2020. They are not record extremes, a forecast range or temperatures at a fixed time of day.
How is a rain day counted?
A local calendar day (standard time, UTC-6, no daylight saving) with at least 1 mm of total precipitation counts as one rain day. We count these for each year and month, then average across 30 years. The average does not predict which days will be wet.
Where do the numbers come from?
ERA5-Land (temperature) and ERA5 (precipitation) reanalysis from the Copernicus Climate Change Service, read from the Open-Meteo open-data archive. Temperature comes from the 0.1° model cell at 30.40°, -91.20° (5 km from the city centre). Rain comes from the 0.25° cell at 30.50°, -91.25°. These are model estimates, not weather-station readings; coast, hills and city streets can differ.
Does this page show sunshine, humidity or sea temperature?
No. The data used here contain air temperature and precipitation only. Daylight hours are calculated from the city's latitude (sunrise to sunset), not measured sunshine.