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 3.5 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: 16:40
January 01, thursday
1800
18°F
N
3 mph
3 mph
2100
16°F
NW
4 mph
4 mph
January 02, friday
0000
16°F
NW
2 mph
2 mph
0300
23°F
NW
2 mph
2 mph
0600
18°F
NW
2 mph
2 mph
0900
23°F
NW
2 mph
2 mph
1200
43°F
SE
2 mph
2 mph
1500
43°F
SE
4 mph
4 mph
