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

Fog

20%

Partly Cloudy

19%

Moderate rain at times

10%

Weather at 12pm
63°F

Partly Cloudy

24%

Moderate rain at times

14%

Heavy rain

5%

Weather at 6pm
54°F

Moderate rain at times

24%

Partly Cloudy

20%

Fog

13%

Weather at 3am
54°F

Clear/Sunny

35%

Fog

26%

Moderate rain at times

16%

Partly Cloudy

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:

01-09-2024
Clear/Sunny
63°F to 79°F
02-09-2024
Patchy rain nearby
61°F to 72°F
03-09-2024
Patchy rain nearby
61°F to 70°F
04-09-2024
Patchy rain nearby
59°F to 67°F
05-09-2024
Light rain shower
50°F to 65°F
06-09-2024
Clear/Sunny
54°F to 72°F
07-09-2024
Clear/Sunny
58°F to 77°F
08-09-2024
Patchy rain nearby
59°F to 68°F
09-09-2024
Light rain shower
49°F to 56°F
10-09-2024
Patchy rain nearby
56°F to 59°F
11-09-2024
Clear/Sunny
49°F to 59°F
12-09-2024
Patchy rain nearby
49°F to 49°F
13-09-2024
Light rain shower
40°F to 43°F
14-09-2024
Patchy rain nearby
41°F to 50°F
15-09-2024
Cloudy
43°F to 52°F
16-09-2024
Clear/Sunny
43°F to 54°F
17-09-2024
Partly Cloudy
47°F to 54°F
18-09-2024
Clear/Sunny
45°F to 59°F
19-09-2024
Clear/Sunny
49°F to 63°F
20-09-2024
Clear/Sunny
52°F to 67°F
21-09-2024
Partly Cloudy
52°F to 63°F
22-09-2024
Partly Cloudy
54°F to 63°F
23-09-2024
Light rain shower
49°F to 58°F
24-09-2024
Patchy rain nearby
49°F to 56°F
25-09-2024
Partly Cloudy
49°F to 59°F
26-09-2024
Patchy rain nearby
58°F to 63°F
27-09-2024
Patchy rain nearby
52°F to 58°F
28-09-2024
Light rain shower
40°F to 47°F
29-09-2024
Clear/Sunny
41°F to 67°F
30-09-2024
Overcast
52°F to 68°F

Map: other cities in the French Alps in september

Cities near Grenoble (Isère):

Charmant Som in septembergood weather
Alpe d'Huez in septembertolerable weather
Vercors in septembergood weather
Chambéry in septembergood weather
Saint-Jean-de-Maurienne in septembertolerable weather
Valloire in septembertolerable weather
Écrins National Park in septembervery bad weather
Aix-les-Bains in septembergood weather
Valmeinier in septembertolerable weather
Bourget Lake (Lac du Bourget) in septembergood weather
Les Menuires in septembertolerable weather
Val Thorens in septembertolerable weather
French Alps in september: See full list of cities

Click over cities on the map for information about the weather in september.

Legend: 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).


Weather in august in Grenoble (Isère)
Weather in october in Grenoble (Isère)
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