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: 14:27
December 29, monday
1500
52°F
SE
2 mph
2 mph
1800
23°F
W
2 mph
2 mph
2100
21°F
W
2 mph
2 mph
December 30, tuesday
0000
19°F
SW
2 mph
2 mph
0300
25°F
S
3 mph
3 mph
0600
32°F
S
4 mph
4 mph
0900
27°F
S
5 mph
5 mph
1200
36°F
S
9 mph
9 mph
