September weather forecastÉcône, Switzerland
September
Weather in September
September, the first month of the autumn in Écône, is still a cool month, with temperature in the range of an average low of 2.8°C (37°F) and an average high of 12°C (53.6°F).Temperature
September is characterized by a mild reduction in the average high-temperature, from an enjoyable 16.2°C (61.2°F) in August to a cool 12°C (53.6°F). The nighttime temperature in Écône, during September, averages of 2.8°C (37°F).Humidity
The average relative humidity in September in Écône is 82%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.1 days and typically collects 43mm (1.69") of precipitation.Snowfall
January through May, August through December are months with snowfall. In September, it is snowing for 1.2 days. Throughout September, 12mm (0.47") of snow is accumulated. Throughout the year, there are 97.6 snowfall days, and 2767mm (108.94") of snow is accumulated.Daylight
In Écône, the average length of the day in September is 12h and 32min.On the first day of September in Écône, Switzerland, sunrise is at 06:52 and sunset at 20:09. On the last day of the month, sunrise is at 07:28 and sunset at 19:12 CEST.
Sunshine
In Écône, the average sunshine in September is 8.2h.UV index
In Écône, the average daily maximum UV index in September is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A daily maximum UV index of 2 in September translates into the following instructions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Avoiding the Sun during its peak radiation time around midday is a healthy practice. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Écône, Switzerland
- Average high temperature in September: 12°C
The warmest month (with the highest average high temperature) is August (16.2°C).
The month with the lowest average high temperature is January (-2.9°C).
- Average low temperature in September: 2.8°C
The months with the highest average low temperature are July and August (5.6°C).
The coldest month (with the lowest average low temperature) is January (-12.3°C).
Average pressure in September
Écône, Switzerland
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Écône, Switzerland
- Average wind speed in September: 6.7km/h
The windiest months (with the highest average wind speed) are November and December (8.7km/h).
The calmest month (with the lowest average wind speed) is August (6.5km/h).
Average humidity in September
Écône, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is March (91%).
The month with the lowest relative humidity is August (79%).
Average rainfall in September
Écône, Switzerland
- Average rainfall in September: 43mm
The wettest month (with the highest rainfall) is May (117mm).
The driest month (with the least rainfall) is September (43mm).
Average rainfall days in September
Écône, Switzerland
- Average rainfall days in September: 14.1 days
The month with the highest number of rainy days is May (21.2 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in September
Écône, Switzerland
- Average snowfall in September: 12mm
The month with the highest snowfall is December (669mm).
The months with the least snowfall are June and July (0mm).
Average snowfall days in September
Écône, Switzerland
- Average snowfall days in September: 1.2 days
The month with the highest number of snowfall days is January (18.5 days).
The months with the least snowfall days are June and July (0 days).
Average daylight in September /
Average sunshine in September
Écône, Switzerland
- 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 12min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 42min).
Average sunshine days in September
Écône, Switzerland
- Average sunshine days in September: 12.9 days
The month with the most sunshine days is October (16.7 days).
The month with the least sunshine days is May (6.3 days).
Average UV index in September
Écône, Switzerland
- Average UV index in September: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in September
Écône, Switzerland
- Average cloud cover in September: 42
The months with the most cloud cover are February, March and May (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in September
Écône, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June, July, August and October (8km).
The months with the lowest visibility are January, February and March (6km).
