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The weather in Louisiana in September is very hot. The average temperatures are between 24°C and 31°C, drinking water regularly is advisable.
You can expect rain for roughly half of the month of September in Louisiana. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Louisiana in September 2025.
If you’re planning to visit Louisiana in the near future, we highly recommend that you review the 14 day weather forecast for Louisiana before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 16° / 9° | 4 | 27 | 0 | 53 mm | Good | Louisiana in January |
| February | 19° / 12° | 4 | 24 | 0 | 60 mm | Good | Louisiana in February |
| March | 22° / 15° | 4 | 27 | 0 | 65 mm | Good | Louisiana in March |
| April | 25° / 18° | 4 | 26 | 0 | 56 mm | Perfect | Louisiana in April |
| May | 29° / 21° | 7 | 24 | 0 | 85 mm | Ok | Louisiana in May |
| June | 32° / 25° | 10 | 20 | 0 | 136 mm | Ok | Louisiana in June |
| July | 32° / 26° | 13 | 18 | 0 | 189 mm | Ok | Louisiana in July |
| August | 32° / 26° | 16 | 15 | 0 | 224 mm | Ok | Louisiana in August |
| September | 31° / 24° | 10 | 20 | 0 | 138 mm | Ok | Louisiana in September |
| October | 27° / 20° | 5 | 26 | 0 | 69 mm | Perfect | Louisiana in October |
| November | 21° / 14° | 3 | 27 | 0 | 45 mm | Good | Louisiana in November |
| December | 18° / 12° | 4 | 27 | 0 | 69 mm | Good | Louisiana in December |
For a more accurate weather forecast please select a city