Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September is characterized by a mild reduction in the average high-temperature, from a pleasant 21.4°C (70.5°F) in August to a comfortable 17.1°C (62.8°F). September nights experience a consistent temperature drop to a frosty 7.5°C (45.5°F).Humidity
In September, the average relative humidity in Lostallo is 78%.Rainfall
In Lostallo, in September, it is raining for 12.2 days, with typically 32mm (1.26") of accumulated precipitation. In Lostallo, Switzerland, during the entire year, the rain falls for 137.8 days and collects up to 669mm (26.34") of precipitation.Snowfall
In Lostallo, snow does not fall in May through October.Daylight
In Lostallo, Switzerland, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:44 and sunset at 20:01. On the last day of the month, sunrise is at 07:21 and sunset at 19:04 CEST.
Sunshine
The average sunshine in September is 9.4h.UV index
In Lostallo, 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 exposure to the Sun's UV radiation for average individuals.Note: The maximum UV index of 4 during September translates into these guidelines:
Make use of precautions - It is urged to ward off sun damage. The solar radiation around mid-day is intense; avoid the Sun and stay safe. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Lostallo?
What is the average humidity in September in Lostallo?
How many days does it rain in September in Lostallo?
When it does not snow in Lostallo?
What is the average length of the day in September in Lostallo?
When are sunrise and sunset in September in Lostallo?
How many hours of sunshine does Lostallo have in September?
How high is the UV index in September in Lostallo?
Average temperature in September
Lostallo, Switzerland
- Average high temperature in September: 17.1°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in September: 7.5°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest month (with the lowest average low temperature) is February (-5.1°C).
Average pressure in September
Lostallo, Switzerland
- Average pressure in September: 1017.8mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in September
Lostallo, Switzerland
- Average wind speed in September: 6.4km/h
The windiest month (with the highest average wind speed) is February (7.4km/h).
The calmest month (with the lowest average wind speed) is November (5.7km/h).
Average humidity in September
Lostallo, Switzerland
- Average humidity in September: 78%
The month with the highest relative humidity is November (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in September
Lostallo, Switzerland
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in September
Lostallo, Switzerland
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in September
Lostallo, Switzerland
- Average snowfall in September: 0mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lostallo, Switzerland
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in September /
Average sunshine in September
Lostallo, Switzerland
- Average daylight in September: 12h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 30min).
Average sunshine days in September
Lostallo, Switzerland
- Average sunshine days in September: 14.8 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in September
Lostallo, Switzerland
- 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, March, October, November and December (UV index 2).
Average cloud cover in September
Lostallo, Switzerland
- Average cloud cover in September: 32
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Lostallo, Switzerland
- 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).
Lostallo, Switzerland
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