September weather forecastGrenoble, France
September
Weather in September
September marks the start of fall in Grenoble, embodying a blend of summer's warmth and winter's crispness. Nature starts to display a magnificent array of colors, delighting the eyes of locals and tourists alike. September experiences a significant dip in temperature, with highs falling to approximately 21.8°C (71.2°F) from August. The summer crowds begin to thin, and the city adopts a more peaceful rhythm. By month-end, the brisk evenings are a clear indication that autumn has well and truly arrived.Temperature
The beginning of September in Grenoble brings a slight decrease in the average high-temperature, transitioning from a warm 26.4°C (79.5°F) in August to an agreeable 21.8°C (71.2°F). Throughout the month of September, Grenoble reports a steady low-temperature average of 10.9°C (51.6°F).Humidity
In September, the average relative humidity is 79%.Rainfall
In Grenoble, in September, it is raining for 7.7 days, with typically 106mm (4.17") of accumulated precipitation. Throughout the year, in Grenoble, there are 106.5 rainfall days, and 934mm (36.77") of precipitation is accumulated.Snowfall
In Grenoble, snow does not fall in June through September.Daylight
In Grenoble, France, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:59 and sunset at 20:14. On the last day of the month, sunrise is at 07:34 and sunset at 19:19 CEST.
Sunshine
In Grenoble, the average sunshine in September is 6.4h.Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grenoble, France
- Average high temperature in September: 21.8°C
The warmest month (with the highest average high temperature) is July (26.9°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 10.9°C
The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is January (-1.2°C).
Average humidity in September
Grenoble, France
- Average humidity in September: 79%
The months with the highest relative humidity are November and December (84%).
The month with the lowest relative humidity is July (70%).
Average rainfall in September
Grenoble, France
- Average rainfall in September: 105.7mm
The wettest month (with the highest rainfall) is October (105.8mm).
The driest month (with the least rainfall) is February (51.6mm).
Average rainfall days in September
Grenoble, France
- Average rainfall days in September: 7.7 days
The month with the highest number of rainy days is May (11 days).
The month with the least rainy days is July (6.2 days).
Average snowfall days in September
Grenoble, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grenoble, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 6h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
