Climate averages 1991–2020
Baton Rouge weather
in May.
A hot, wet month: the 5th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a hot month in Baton Rouge: daytime highs average 28.9°C and nights cool to about 19.5°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 105 mm of rain on roughly 10 days, which makes May a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 40 min on an average May day.
The nearest other city in this atlas is Lafayette (Louisiana), United States (84 km away). In May its highs average 28.9°C, about as warm as Baton Rouge, with 92 mm of rain.
Among the 498 cities listed in the United States, Baton Rouge ranks joint 58th of 498 for the warmest May highs and joint 385th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Baton Rouge is 5.2°C warmer than that mean.
From May to June, average highs rise by 2.3°C to 31.3°C, and monthly rainfall rises from 105 mm to 120 mm.
The annual picture
May in context
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, selected | 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
May in nearby cities
- Lafayette (Louisiana), United States in MayUnited States · 84 kmHigh 28.9°C · Low 20.0°C · 92 mm rain
- Metairie in MayUnited States · 112 kmHigh 28.0°C · Low 21.2°C · 93 mm rain
- New Orleans in MayUnited States · 120 kmHigh 27.7°C · Low 21.1°C · 91 mm rain
- Lake Charles in MayUnited States · 195 kmHigh 28.6°C · Low 20.2°C · 101 mm rain
- Gulfport in MayUnited States · 201 kmHigh 27.1°C · Low 20.8°C · 96 mm rain
- Jackson in MayUnited States · 227 kmHigh 28.1°C · Low 17.3°C · 104 mm rain
- Beaumont in MayUnited States · 283 kmHigh 28.4°C · Low 20.3°C · 97 mm rain
- Mobile in MayUnited States · 302 kmHigh 27.7°C · Low 19.7°C · 87 mm rain
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 limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Baton Rouge) is explained once on the Baton Rouge year overview and on the Sources, method and limits page.