September weather forecastSaint Peter, Switzerland
September
Weather in September
September, the first month of the autumn in Saint Peter, is still a refreshing month, with temperature in the range of an average low of 3.1°C (37.6°F) and an average high of 13°C (55.4°F).Temperature
The advent of September brings a slight shift in average high-temperature, moving from a comfortable 17.2°C (63°F) in August to a moderate 13°C (55.4°F). In Saint Peter, an average nighttime temperature of 3.1°C (37.6°F) is expected during September.Humidity
The average relative humidity in September is 82%.Rainfall
In Saint Peter, during September, the rain falls for 10.5 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, in Saint Peter, there are 114.4 rainfall days, and 366mm (14.41") of precipitation is accumulated.Snowfall
Months with snowfall are January through December. In Saint Peter, Switzerland, in September, snow falls for 2.2 days, with typically accumulated 45mm (1.77") of snow. Throughout the year, there are 98.4 snowfall days, and 1130mm (44.49") of snow is accumulated.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September in Saint Peter, sunrise is at 06:41 and sunset at 20:00. On the last day of the month, sunrise is at 07:19 and sunset at 19:03 CEST.
Sunshine
The average sunshine in September is 8.9h.UV index
In Saint Peter, the average daily maximum UV index in September is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 2 during September leads to these advisories:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint Peter, Switzerland
- Average high temperature in September: 13°C
The warmest months (with the highest average high temperature) are July and August (17.2°C).
The month with the lowest average high temperature is January (-2.8°C).
- Average low temperature in September: 3.1°C
The month with the highest average low temperature is August (6.3°C).
The coldest month (with the lowest average low temperature) is February (-11.3°C).
Average pressure in September
Saint Peter, Switzerland
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1020.7mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in September
Saint Peter, Switzerland
- Average wind speed in September: 6.6km/h
The windiest month (with the highest average wind speed) is November (8.2km/h).
The calmest month (with the lowest average wind speed) is August (6.4km/h).
Average humidity in September
Saint Peter, Switzerland
- Average humidity in September: 82%
The month with the highest relative humidity is March (92%).
The month with the lowest relative humidity is July (79%).
Average rainfall in September
Saint Peter, Switzerland
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is August (51mm).
The driest month (with the least rainfall) is February (18mm).
Average rainfall days in September
Saint Peter, Switzerland
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is November (4.4 days).
Average snowfall in September
Saint Peter, Switzerland
- Average snowfall in September: 45mm
The month with the highest snowfall is November (171mm).
The month with the least snowfall is July (9mm).
Average snowfall days in September
Saint Peter, Switzerland
- Average snowfall days in September: 2.2 days
The month with the highest number of snowfall days is March (16.3 days).
The month with the least snowfall days is August (0.4 days).
Average daylight in September /
Average sunshine in September
Saint Peter, Switzerland
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in September: 8h and 54min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in September
Saint Peter, Switzerland
- Average sunshine days in September: 16.1 days
The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in September
Saint Peter, 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 and November (UV index 1).
Average cloud cover in September
Saint Peter, Switzerland
- Average cloud cover in September: 42
The month with the most cloud cover is March (Cloud cover 52).
The months with the least cloud cover are August and October (Cloud cover 40).
Average visibility in September
Saint Peter, Switzerland
- Average visibility in September: 7km
The months with the highest visibility are July and August (8km).
The months with the lowest visibility are January, February and March (6km).
