September weather forecastKeffenach, France
September weather for Keffenach, France: September, the first month of the autumn in Keffenach, is still a pleasant month, with temperature in the range of an average high of 20.6°C (69.1°F) and an average low of 10.4°C (50.7°F). In Keffenach, France, snow does not fall in April through September.
September
Weather in September
September, the first month of the autumn in Keffenach, is still a pleasant month, with temperature in the range of an average high of 20.6°C (69.1°F) and an average low of 10.4°C (50.7°F).Temperature
September indicates a minor shift in the average high-temperature, from August's moderately hot 25.3°C (77.5°F) to an agreeable 20.6°C (69.1°F). Keffenach's temperature in September lowers to a consistent average of 10.4°C (50.7°F) during the nights.Humidity
The average relative humidity in September in Keffenach, France, is 76%.Rainfall
In Keffenach, in September, during 9.9 rainfall days, 25mm (0.98") of precipitation is typically accumulated. Throughout the year, in Keffenach, there are 142.1 rainfall days, and 376mm (14.8") of precipitation is accumulated.Snowfall
In Keffenach, snow does not fall in April through September.Daylight
In Keffenach, the average length of the day in September is 12h and 35min.On the first day of September, sunrise is at 06:45 and sunset at 20:10. On the last day of the month, sunrise is at 07:27 and sunset at 19:09 CEST.
Sunshine
In September, the average sunshine in Keffenach is 8.5h.UV index
In Keffenach, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Keffenach, France
- Average high temperature in September: 20.6°C
The warmest months (with the highest average high temperature) are July and August (25.3°C).
The month with the lowest average high temperature is January (4.1°C).
- Average low temperature in September: 10.4°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is January (-0.6°C).
Average pressure in September
Keffenach, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1015.1mbar).
Average wind speed in September
Keffenach, France
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Keffenach, France
- Average humidity in September: 76%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are July and August (71%).
Average rainfall in September
Keffenach, France
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is May (47mm).
The driest month (with the least rainfall) is April (18mm).
Average rainfall days in September
Keffenach, France
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (15.1 days).
The months with the least rainy days are February and September (9.9 days).
Average snowfall in September
Keffenach, France
- Average snowfall in September: 0mm
The month with the highest snowfall is December (50mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Keffenach, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 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
Keffenach, 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 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Keffenach, France
- Average sunshine days in September: 18.2 days
The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is December (13.5 days).
Average UV index in September
Keffenach, France
- Average UV index in September: 4
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Keffenach, France
- Average cloud cover in September: 36
The month with the most cloud cover is December (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in September
Keffenach, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January and December (8km).
