Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
September
Weather in September
Temperature
September heralds a minor drop in average high-temperature, sliding from August's moderately hot 24.9°C (76.8°F) to an agreeable 20.3°C (68.5°F). Nighttime temperatures in September average to a chilly 9.9°C (49.8°F) in Cellieu.Humidity
In September, the average relative humidity is 77%.Rainfall
In Cellieu, France, in September, it is raining for 11 days, with typically 28mm (1.1") of accumulated precipitation. In Cellieu, during the entire year, the rain falls for 153.4 days and collects up to 511mm (20.12") of precipitation.Snowfall
In Cellieu, snow does not fall in June through September.Daylight
In Cellieu, the average length of the day in September is 12h and 32min.On the first day of September in Cellieu, sunrise is at 07:03 and sunset at 20:19. On the last day of the month, sunrise is at 07:39 and sunset at 19:23 CEST.
Sunshine
In September, the average sunshine is 8.1h.UV index
The average daily maximum UV index in September in Cellieu is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: An average maximum UV index of 4 in September leads to these recommendations:
Act with care - The need to guard against sun damage is communicated. Protect yourself from the midday Sun's peak UV radiation by minimizing exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Cellieu?
What is the average humidity in September in Cellieu?
How much does it rain in Cellieu in September?
When it does not snow in Cellieu?
Does it snow in Cellieu in September?
What is the average length of the day in September in Cellieu?
When is the sunrise / sunset in September in Cellieu?
How many hours of sunshine does Cellieu have in September?
How high is the UV index in September in Cellieu?
Average temperature in September
Cellieu, France
- Average high temperature in September: 20.3°C
The warmest month (with the highest average high temperature) is August (24.9°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is July (13.2°C).
The coldest month (with the lowest average low temperature) is February (-1°C).
Average pressure in September
Cellieu, France
- Average pressure in September: 1018.4mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Cellieu, France
- Average wind speed in September: 9.1km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Cellieu, France
- Average humidity in September: 77%
The months with the highest relative humidity are November and December (86%).
The month with the lowest relative humidity is August (72%).
Average rainfall in September
Cellieu, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is November (58mm).
The driest month (with the least rainfall) is February (27mm).
Average rainfall days in September
Cellieu, France
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is December (10 days).
Average snowfall in September
Cellieu, France
- Average snowfall in September: 0mm
The month with the highest snowfall is November (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Cellieu, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Cellieu, France
- Average daylight in September: 12h and 3min
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: 8h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
Cellieu, France
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is May (10.2 days).
Average UV index in September
Cellieu, France
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Cellieu, France
- Average cloud cover in September: 38
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Cellieu, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
