September weather forecastLeyrieu, France
September
Weather in September
The first month of the autumn, September, is still a pleasant month in Leyrieu, France, with an average temperature varying between 21.5°C (70.7°F) and 11°C (51.8°F).Temperature
The onset of September results in a small decrease in the average high-temperature, moderately receding from a warm 26.1°C (79°F) in August to an agreeable 21.5°C (70.7°F). In Leyrieu, an average temperature of 11°C (51.8°F) is noted during September nights.Humidity
In September, the average relative humidity is 77%.Rainfall
In September, in Leyrieu, the rain falls for 11.5 days. Throughout September, 36mm (1.42") of precipitation is accumulated. In Leyrieu, during the entire year, the rain falls for 164.3 days and collects up to 575mm (22.64") of precipitation.Snowfall
In Leyrieu, snow does not fall in April through September.Daylight
In September, the average length of the day in Leyrieu is 12h and 32min.On the first day of September, sunrise is at 07:00 and sunset at 20:16. On the last day of the month, sunrise is at 07:36 and sunset at 19:20 CEST.
Sunshine
The average sunshine in September in Leyrieu is 8.6h.UV index
In Leyrieu, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A typical high UV index of 4 in September suggests the following recommendations:
Make use of precautions - Shielding skin and eyes from injury is a requirement. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Leyrieu, France
- Average high temperature in September: 21.5°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in September: 11°C
The months with the highest average low temperature are July and August (14.6°C).
The coldest month (with the lowest average low temperature) is January (0.1°C).
Average pressure in September
Leyrieu, France
- Average pressure in September: 1018.5mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Leyrieu, France
- Average wind speed in September: 8.4km/h
The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest months (with the lowest average wind speed) are August and September (8.4km/h).
Average humidity in September
Leyrieu, France
- Average humidity in September: 77%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Leyrieu, France
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is November (65mm).
The driest month (with the least rainfall) is February (32mm).
Average rainfall days in September
Leyrieu, France
- Average rainfall days in September: 11.5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is September (11.5 days).
Average snowfall in September
Leyrieu, France
- Average snowfall in September: 0mm
The month with the highest snowfall is February (41mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Leyrieu, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.6 days).
The months with the least snowfall days are April, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Leyrieu, France
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in September
Leyrieu, France
- Average sunshine days in September: 15.3 days
The month with the most sunshine days is October (16.6 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in September
Leyrieu, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Leyrieu, France
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in September
Leyrieu, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September and November (9km).
The months with the lowest visibility are January, October and December (8km).
