Grenoble (Isère) in september: average Weather, Temperature and Climate
Weather in Grenoble (Isère) in september 2025
The weather in Grenoble (Isère) in september comes from statistical datas on the past years. You can view the weather statistics the entire 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
56°F
Clear/Sunny
44% of time
20%
19%
10%
Weather at 12pm
63°F
Clear/Sunny
53% of time
24%
14%
5%
Weather at 6pm
54°F
Clear/Sunny
33% of time
24%
20%
13%
Weather at 3am
54°F
35%
26%
16%
14%
Evolution of daily average temperature and precipitation in Grenoble (Isère) in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Grenoble (Isère) in september.
The climate of Grenoble (Isère) in september is good
The climate in september in Grenoble (Isère) is wet (with 4.5in of rainfall over 5 days). It should be noted a worsening from the previous month since in august there is an average of 4.8in of precipitation over 7 days.
The climate quite good there the month of september. Temperatures are up to 67°F. The seasonal minimum is 54°F. Thus, the mean temperature average on this month of september in Grenoble (Isère) is 61°F. These temperatures are far removed from those records observed in Grenoble (Isère) in september with a maximum record of 86°F in 2019 and a minimum record of 38°F in 2010. You can hope to have about 19 days with temperatures above 65°F, or 63% of time.
On average, in Grenoble (Isère), the days of september last 12:32. Sunrise is at 06:16 and sunset is at 18:48.
With a good climate, this month is advisable to go in this locality in Rhône-Alpes.
Seasonal average climate and temperature of Grenoble (Isère) in september
Check below seasonal norms These statistics are set from the weather statements earlier years of the month of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 61°F | ||||
| Highest temperature | 67°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 86°F (2019) | ||||
| Lowest record temperature | 38°F (2010) | ||||
| Number of days at +86°F | 0 day(s) (0%) | ||||
| Number of days at +65°F | 19 day(s) (63%) | ||||
| Number of days at -32°F | 0 day(s) (0%) | ||||
| Wind | |||||
| Wind speed | 10km/h | ||||
| Wind temperature | 54°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.5in | ||||
| Number of days with rainfall | 5 day(s) (18%) | ||||
| Record daily rainfall | 2.4in (2012) | ||||
| Snowfall | 0cm | ||||
| Other climate data | |||||
| Humidity | 89% | ||||
| Visibility | 8.28km | ||||
| Cloud cover | 33% | ||||
| UV index | 4 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:16 | ||||
| Time of sunset | 18:48 | ||||
| Length of day | 12:32 | ||||
| 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 Grenoble (Isère) in september 2024:
63°F to 79°F
61°F to 72°F
61°F to 70°F
59°F to 67°F
50°F to 65°F
54°F to 72°F
58°F to 77°F
59°F to 68°F
49°F to 56°F
56°F to 59°F
49°F to 59°F
49°F to 49°F
40°F to 43°F
41°F to 50°F
43°F to 52°F
43°F to 54°F
47°F to 54°F
45°F to 59°F
49°F to 63°F
52°F to 67°F
52°F to 63°F
54°F to 63°F
49°F to 58°F
49°F to 56°F
49°F to 59°F
58°F to 63°F
52°F to 58°F
40°F to 47°F
41°F to 67°F
52°F to 68°F
Map: other cities in the French Alps in september
Cities near Grenoble (Isère):
| Charmant Som in september | good weather |
| Alpe d'Huez in september | tolerable weather |
| Vercors in september | good weather |
| Chambéry in september | good weather |
| Saint-Jean-de-Maurienne in september | tolerable weather |
| Valloire in september | tolerable weather |
| Écrins National Park in september | very bad weather |
| Aix-les-Bains in september | good weather |
| Valmeinier in september | tolerable weather |
| Bourget Lake (Lac du Bourget) in september | good weather |
| Les Menuires in september | tolerable weather |
| Val Thorens in september | tolerable weather |
Click over cities on the map for information about the weather in september.
Grenoble (Isère)
perfect weather
good
tolerable
bad
very bad
Weather data for Grenoble (Isère) in september:
Weather data for Grenoble (Isère) for september are derived from an average of the weather forecast since 2009 in Grenoble (Isère). There is a margin of error and these forecasts are to be considered as general information only. The weather in Grenoble (Isère) 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 Grenoble (Isère).