Saint-Louis in september: average Weather, Temperature and Climate
Weather in Saint-Louis in september 2025
The weather in Saint-Louis in the month of september comes from statistical datas on the past years. You can view the weather statistics for all the month, but also navigating through the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
54°F
Clear/Sunny
34% of time
23%
22%
13%
Weather at 12pm
70°F
Clear/Sunny
47% of time
24%
20%
7%
Weather at 6pm
59°F
Clear/Sunny
44% of time
25%
22%
6%
Weather at 3am
54°F
32%
27%
23%
18%
Evolution of daily average temperature and precipitation in Saint-Louis in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Saint-Louis in september.
The climate of Saint-Louis in september is good
The weather in september in Saint-Louis is rather dry (with 3.1in of precipitation over 5 days). This is better than the previous month since in august it receives an average of 5.6in of precipitation over 8 days.
The climate comfortable in this city the month of september. Temperatures are up to 72°F. On average, the recorded minimum temperature is 54°F. Thus, the mean temperature average in september in Saint-Louis is 63°F. Note that these seasonal averages are in contrast with those observed in Saint-Louis in the month of september with a maximum record of 88°F in 2013 and a minimum record of 38°F in 2010. You can plan to have about 25 days with temperatures over 65°F, or 83% of the month.
In september in Saint-Louis, the days on average last 12:35. The sun rises at 06:07 and sets at 18:42.
With good weather conditions, the month of september is advisable to go in Saint-Louis in Alsace.
Seasonal average climate and temperature of Saint-Louis in september
Check below seasonal norms These datas are set from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 63°F | ||||
| Highest temperature | 72°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 88°F (2013) | ||||
| Lowest record temperature | 38°F (2010) | ||||
| Number of days at +86°F | 1 day(s) (3%) | ||||
| Number of days at +65°F | 25 day(s) (83%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 11km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 3.1in | ||||
| Number of days with rainfall | 5 day(s) (17%) | ||||
| Record daily rainfall | 1.2in (2013) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 90% | ||||
| Visibility | 8.7km | ||||
| Cloud cover | 33% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 12 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:07 | ||||
| Time of sunset | 18:42 | ||||
| Length of day | 12:35 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Saint-Louis in september 2024:
65°F to 85°F
63°F to 81°F
63°F to 83°F
63°F to 74°F
61°F to 74°F
56°F to 76°F
58°F to 83°F
61°F to 70°F
56°F to 65°F
52°F to 68°F
54°F to 59°F
45°F to 59°F
41°F to 56°F
47°F to 58°F
40°F to 61°F
43°F to 58°F
52°F to 61°F
47°F to 68°F
52°F to 67°F
50°F to 74°F
54°F to 74°F
56°F to 72°F
58°F to 59°F
50°F to 68°F
49°F to 68°F
58°F to 59°F
54°F to 58°F
43°F to 50°F
41°F to 59°F
49°F to 67°F
Map: other cities in Alsace in september
Cities near Saint-Louis:
| Village-Neuf in september | good weather |
| Ottmarsheim in september | good weather |
| Altkirch in september | good weather |
| Mulhouse in september | good weather |
| Cernay in september | good weather |
| Guebwiller in september | good weather |
| Neuf-Brisach in september | good weather |
| Eguisheim in september | good weather |
| Colmar (Haut-Rhin) in september | good weather |
| Lac de Kruth in september | good weather |
| Kaysersberg in september | good weather |
| Riquewihr in september | good weather |
Click over cities on the map for information about the weather in september.
Saint-Louis
perfect weather
good
tolerable
bad
very bad
Weather data for Saint-Louis in september:
Weather data for Saint-Louis for september are derived from an average of the weather forecast since 2009 in Saint-Louis. There is a margin of error and these forecasts are to be considered as general information only. The weather in Saint-Louis can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Saint-Louis.