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
September
Weather in September
Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from a moderately hot 23.8°C (74.8°F) in August to a refreshing 18.9°C (66°F). During September, the temperature tends to dip to an average of 7.4°C (45.3°F) at night.Humidity
In September, the average relative humidity is 76%.Rainfall
In Allenc, during September, the rain falls for 10.4 days and regularly aggregates up to 36mm (1.42") of precipitation. Throughout the year, in Allenc, there are 138.7 rainfall days, and 637mm (25.08") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Allenc. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 3mm (0.12") of snow. Throughout the year, in Allenc, there are 53 snowfall days, and 938mm (36.93") of snow is accumulated.Daylight
The average length of the day in September in Allenc is 12h and 31min.On the first day of September, sunrise is at 07:08 and sunset at 20:21. On the last day of the month, sunrise is at 07:42 and sunset at 19:27 CEST.
Sunshine
In Allenc, the average sunshine in September is 8.2h.UV index
In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 4 in September translates into these instructions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures in Allenc?
What is the average humidity in September in Allenc?
How many days does it rain in September in Allenc?
When does it start to snow in Allenc?
What is the average length of the day in September in Allenc?
When are sunrise and sunset in September in Allenc?
How long on average sun shines in September in Allenc?
What is the UV index intensity in September in Allenc?
Average temperature in September
Allenc, France
- Average high temperature in September: 18.9°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (3.4°C).
- Average low temperature in September: 7.4°C
The month with the highest average low temperature is July (10.8°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).
Average pressure in September
Allenc, France
- Average pressure in September: 1018.1mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in September
Allenc, France
- Average wind speed in September: 9km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Allenc, France
- Average humidity in September: 76%
The month with the highest relative humidity is November (89%).
The month with the lowest relative humidity is August (69%).
Average rainfall in September
Allenc, France
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is November (103mm).
The driest month (with the least rainfall) is August (31mm).
Average rainfall days in September
Allenc, France
- Average rainfall days in September: 10.4 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (7.1 days).
Average snowfall in September
Allenc, France
- Average snowfall in September: 3mm
The month with the highest snowfall is January (213mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in September
Allenc, France
- Average snowfall days in September: 0.2 days
The month with the highest number of snowfall days is January (12.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Allenc, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is November (Average sunshine: 4h and 0min).
Average sunshine days in September
Allenc, France
- Average sunshine days in September: 18.4 days
The month with the most sunshine days is September (18.4 days).
The month with the least sunshine days is November (11.4 days).
Average UV index in September
Allenc, France
- 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, April, November and December (UV index 2).
Average cloud cover in September
Allenc, France
- Average cloud cover in September: 40
The month with the most cloud cover is November (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Allenc, France
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, October, November and December (7km).
