September weather forecastArdenno, Italy
September
Weather in September
September, the first month of the autumn in Ardenno, is also a fresh month, with temperature in the range of an average low of 3.5°C (38.3°F) and an average high of 12.2°C (54°F).Temperature
September brings a minor shift in the average high-temperature, adjusting from an enjoyable 16.3°C (61.3°F) in August to a cool 12.2°C (54°F). An average temperature of 3.5°C (38.3°F) is recorded during the nights in September.Humidity
In Ardenno, the average relative humidity in September is 84%.Rainfall
In Ardenno, in September, it is raining for 16.6 days, with typically 77mm (3.03") of accumulated precipitation. Throughout the year, in Ardenno, there are 141.8 rainfall days, and 1016mm (40") of precipitation is accumulated.Snowfall
January through December are months with snowfall. In Ardenno, Italy, in September, snow falls for 1.6 days, with typically accumulated 105mm (4.13") of snow. Throughout the year, there are 98.9 snowfall days, and 3454mm (135.98") of snow is accumulated.Daylight
The average length of the day in September in Ardenno, Italy, is 12h and 32min.On the first day of the month, sunrise is at 06:42 and sunset at 19:59. On the last day of September, sunrise is at 07:19 and sunset at 19:03 CEST.
Sunshine
In Ardenno, the average sunshine in September is 8.5h.UV index
In Ardenno, the average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The UV index of 3 during September translates into the following guidance:
Adopt protective measures - Suggestions to resist sunburn are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Ardenno, Italy
- Average high temperature in September: 12.2°C
The warmest month (with the highest average high temperature) is July (16.6°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in September: 3.5°C
The month with the highest average low temperature is August (6.7°C).
The coldest month (with the lowest average low temperature) is January (-10.8°C).
Average pressure in September
Ardenno, Italy
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Ardenno, Italy
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is December (8.8km/h).
The calmest month (with the lowest average wind speed) is August (6.6km/h).
Average humidity in September
Ardenno, Italy
- Average humidity in September: 84%
The months with the highest relative humidity are March and April (89%).
The month with the lowest relative humidity is July (81%).
Average rainfall in September
Ardenno, Italy
- Average rainfall in September: 77mm
The wettest month (with the highest rainfall) is August (149mm).
The driest month (with the least rainfall) is January (32mm).
Average rainfall days in September
Ardenno, Italy
- Average rainfall days in September: 16.6 days
The month with the highest number of rainy days is July (25.8 days).
The month with the least rainy days is December (2.4 days).
Average snowfall in September
Ardenno, Italy
- Average snowfall in September: 105mm
The month with the highest snowfall is November (902mm).
The month with the least snowfall is August (1mm).
Average snowfall days in September
Ardenno, Italy
- Average snowfall days in September: 1.6 days
The month with the highest number of snowfall days is March (16 days).
The month with the least snowfall days is August (0.1 days).
Average daylight in September /
Average sunshine in September
Ardenno, Italy
- 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 30min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is November (Average sunshine: 4h and 42min).
Average sunshine days in September
Ardenno, Italy
- Average sunshine days in September: 11.1 days
The month with the most sunshine days is January (18.1 days).
The month with the least sunshine days is July (3.2 days).
Average UV index in September
Ardenno, Italy
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February, April and October (UV index 1).
Average cloud cover in September
Ardenno, Italy
- Average cloud cover in September: 45
The month with the most cloud cover is April (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in September
Ardenno, Italy
- Average visibility in September: 7km
The months with the highest visibility are June, July, August and December (8km).
The months with the lowest visibility are April and November (6km).
