September weather forecastSiltzheim, France
September
Weather in September
September, the first month of the autumn in Siltzheim, is still a refreshing month, with temperature in the range of an average low of 9.5°C (49.1°F) and an average high of 19.4°C (66.9°F).Temperature
With the arrival of September, Siltzheim notices a mild change in the average high-temperature, sliding from August's warm 23.7°C (74.7°F) to a refreshing 19.4°C (66.9°F). Siltzheim throughout September, records an average low-temperature of 9.5°C (49.1°F).Humidity
In September, the average relative humidity in Siltzheim is 79%.Rainfall
In September, the rain falls for 9.8 days. Throughout September, 28mm (1.1") of precipitation is accumulated. In Siltzheim, during the entire year, the rain falls for 155.4 days and collects up to 384mm (15.12") of precipitation.Snowfall
In Siltzheim, snow does not fall in April through October.Daylight
In Siltzheim, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 06:48 and sunset at 20:14. On the last day of the month, sunrise is at 07:30 and sunset at 19:12 CEST.
Sunshine
In September, the average sunshine is 8h.UV index
The average daily maximum UV index in September in Siltzheim is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 3 during September leads to these instructions:
Exercise prevention - Protecting skin and eyes from harm is required. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Siltzheim, France
- Average high temperature in September: 19.4°C
The warmest month (with the highest average high temperature) is July (23.8°C).
The month with the lowest average high temperature is January (3.7°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (-0.5°C).
Average pressure in September
Siltzheim, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.2mbar).
The month with the lowest atmospheric pressure is November (1014.8mbar).
Average wind speed in September
Siltzheim, France
- Average wind speed in September: 10.1km/h
The windiest month (with the highest average wind speed) is February (15.2km/h).
The calmest month (with the lowest average wind speed) is August (9.8km/h).
Average humidity in September
Siltzheim, France
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Siltzheim, France
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is December (46mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Siltzheim, France
- Average rainfall days in September: 9.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in September
Siltzheim, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (38mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Siltzheim, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Siltzheim, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Siltzheim, France
- Average sunshine days in September: 17.3 days
The month with the most sunshine days is September (17.3 days).
The month with the least sunshine days is December (11.8 days).
Average UV index in September
Siltzheim, France
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Siltzheim, France
- Average cloud cover in September: 39
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Siltzheim, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, October, November and December (8km).
