September weather forecastLenno, Italy
September
Weather in September
September, the first month of the autumn in Lenno, is still a refreshing month, with temperature in the range of an average low of 8.7°C (47.7°F) and an average high of 18.6°C (65.5°F).Temperature
The start of September signals a gentle decrease in the average high-temperature, transitioning from a moderately hot 23°C (73.4°F) in August to a refreshing 18.6°C (65.5°F). In the month of September, Lenno experiences an average low-temperature of 8.7°C (47.7°F).Humidity
The average relative humidity in September is 79%.Rainfall
In September, the rain falls for 17.1 days. Throughout September, 89mm (3.5") of precipitation is accumulated. Throughout the year, in Lenno, there are 190.8 rainfall days, and 1414mm (55.67") of precipitation is accumulated.Snowfall
May through October are months without snowfall in Lenno.Daylight
The average length of the day in September in Lenno is 12h and 32min.On the first day of September in Lenno, Italy, sunrise is at 06:44 and sunset at 20:01. On the last day of the month, sunrise is at 07:20 and sunset at 19:05 CEST.
Sunshine
In September, the average sunshine in Lenno is 9.2h.UV index
In Lenno, Italy, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Ensure safety - Sun damage prevention is strongly urged. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lenno, Italy
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is July (23.9°C).
The month with the lowest average high temperature is January (3.8°C).
- Average low temperature in September: 8.7°C
The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).
Average pressure in September
Lenno, Italy
- Average pressure in September: 1017.6mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in September
Lenno, Italy
- Average wind speed in September: 6.8km/h
The windiest month (with the highest average wind speed) is July (7.6km/h).
The calmest month (with the lowest average wind speed) is November (6km/h).
Average humidity in September
Lenno, Italy
- Average humidity in September: 79%
The month with the highest relative humidity is November (81%).
The months with the lowest relative humidity are January and December (74%).
Average rainfall in September
Lenno, Italy
- Average rainfall in September: 89mm
The wettest month (with the highest rainfall) is August (191mm).
The driest month (with the least rainfall) is January (37mm).
Average rainfall days in September
Lenno, Italy
- Average rainfall days in September: 17.1 days
The month with the highest number of rainy days is June (22.7 days).
The month with the least rainy days is December (8.7 days).
Average snowfall in September
Lenno, Italy
- Average snowfall in September: 0mm
The month with the highest snowfall is December (20mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lenno, Italy
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (2.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lenno, 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: 9h and 12min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is November (Average sunshine: 5h and 12min).
Average sunshine days in September
Lenno, Italy
- Average sunshine days in September: 11 days
The month with the most sunshine days is December (20.8 days).
The month with the least sunshine days is June (5 days).
Average UV index in September
Lenno, Italy
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Lenno, Italy
- Average cloud cover in September: 33
The month with the most cloud cover is November (Cloud cover 43).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in September
Lenno, Italy
- Average visibility in September: 8km
The months with the highest visibility are January, February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are September, October and November (8km).
