Weather in Grenoble: September
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Average day temperature: | 69.0°F |
| Average night temperature: | 44.8°F | |
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Number of sunny days: | 16 days |
| Day length: | 11.8 - 13.3 hours | |
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Number of rainy days: | 4 days |
| Precipitation totals: | 2.1 in. | |
| more information | ||
14 days
forecast
forecast
| Grenoble |
weather in
October
October
| Grenoble |
Air temperature in September, °F
Show year:
2025
2024
2023
The highest day temperature during September of 2025 was 86°F. At the same time the lowest night temperature was 29°F. Daily and nightly averages during September were 69.6°F and 45.9°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Grenoble in September is 1.9 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 3.6 mph The wind's strength is relatively same during the whole year.
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 7.4.
Best time for vacation in Grenoble
Grenoble on a weather map
Places in France:
Name
°F
24 Hours Forecast
Grenoble
Local time: 04:25
December 06, saturday
0600
37°F
NW
4 mph
4 mph
0900
37°F
N
3 mph
3 mph
1200
48°F
N
3 mph
3 mph
1500
50°F
S
1 mph
1 mph
1800
34°F
NW
2 mph
2 mph
2100
36°F
NW
3 mph
3 mph
December 07, sunday
0000
41°F
NW
2 mph
2 mph
0300
41°F
NW
2 mph
2 mph
