September weather forecastDongio, Switzerland
September
Weather in September
The first month of the autumn, September, is still a cool month in Dongio, Switzerland, with temperature in the range of an average low of 2.8°C (37°F) and an average high of 11.6°C (52.9°F).Temperature
A mild drop in Dongio's average high-temperature is observed in September, transitioning from a refreshing 15.8°C (60.4°F) in August to a fresh 11.6°C (52.9°F). During the month of September, Dongio's nighttime temperature lowers to an average of 2.8°C (37°F).Humidity
In September, the average relative humidity is 85%.Rainfall
In Dongio, during September, the rain falls for 20.9 days and regularly aggregates up to 94mm (3.7") of precipitation. In Dongio, during the entire year, the rain falls for 200.1 days and collects up to 1619mm (63.74") of precipitation.Snowfall
January through May, September through December are months with snowfall in Dongio. September is the first month it typically snows. Throughout September, in the average 0.4 snowfall days, it receives 6mm (0.24") of snow. Throughout the year, in Dongio, there are 114.5 snowfall days, and 3819mm (150.35") of snow is accumulated.Daylight
In Dongio, the average length of the day in September is 12h and 33min.On the first day of the month, sunrise is at 06:45 and sunset at 20:03. On the last day of September, sunrise is at 07:22 and sunset at 19:05 CEST.
Sunshine
In Dongio, the average sunshine in September is 7.4h.UV index
The average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 2 in September translates into the following instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Dongio, Switzerland
- Average high temperature in September: 11.6°C
The warmest month (with the highest average high temperature) is July (16.2°C).
The month with the lowest average high temperature is January (-3.9°C).
- Average low temperature in September: 2.8°C
The month with the highest average low temperature is July (6.3°C).
The coldest month (with the lowest average low temperature) is February (-12.7°C).
Average pressure in September
Dongio, Switzerland
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Dongio, Switzerland
- Average wind speed in September: 7.7km/h
The windiest month (with the highest average wind speed) is December (10km/h).
The calmest month (with the lowest average wind speed) is August (7.1km/h).
Average humidity in September
Dongio, Switzerland
- Average humidity in September: 85%
The month with the highest relative humidity is March (94%).
The month with the lowest relative humidity is July (82%).
Average rainfall in September
Dongio, Switzerland
- Average rainfall in September: 94mm
The wettest month (with the highest rainfall) is August (205mm).
The driest month (with the least rainfall) is February (71mm).
Average rainfall days in September
Dongio, Switzerland
- Average rainfall days in September: 20.9 days
The month with the highest number of rainy days is July (27.2 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in September
Dongio, Switzerland
- Average snowfall in September: 6mm
The month with the highest snowfall is December (734mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Dongio, Switzerland
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in September /
Average sunshine in September
Dongio, 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: 7h and 24min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in September
Dongio, Switzerland
- Average sunshine days in September: 6.7 days
The month with the most sunshine days is October (12.1 days).
The month with the least sunshine days is July (2.3 days).
Average UV index in September
Dongio, Switzerland
- Average UV index in September: 2
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, November and December (UV index 1).
Average cloud cover in September
Dongio, Switzerland
- Average cloud cover in September: 56
The months with the most cloud cover are March and April (Cloud cover 68).
The month with the least cloud cover is July (Cloud cover 50).
Average visibility in September
Dongio, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are June and July (8km).
The months with the lowest visibility are January, February, March and April (5km).
