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
In the transition to September, Rognaix observes a minor drop in the average high-temperature, shifting from an enjoyable 18.5°C (65.3°F) in August to a still refreshing 14.3°C (57.7°F). In Rognaix, September nights witness a steady temperature drop to an icy 4°C (39.2°F).Humidity
In Rognaix, France, the average relative humidity in September is 78%.Rainfall
The month with the least rainfall is September, when the rain falls for 14.7 days and typically collects 40mm (1.57") of precipitation.Snowfall
Months with snowfall in Rognaix are January through December. In Rognaix, during September, snow falls for 1.4 days and regularly aggregates up to 10mm (0.39") of snow. In Rognaix, France, during the entire year, snow falls for 102.7 days and aggregates up to 3628mm (142.83") of snow.Daylight
In Rognaix, the average length of the day in September is 12h and 32min.On the first day of the month, sunrise is at 06:56 and sunset at 20:11. On the last day of September, sunrise is at 07:31 and sunset at 19:16 CEST.
Sunshine
The average sunshine in September is 8.9h.UV index
The average daily maximum UV index in September is 3. A UV Index reading 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 3 during September leads to these advisories:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What are the temperatures in Rognaix in September?
What is the average humidity in September in Rognaix?
What is the driest month in Rognaix?
How many days does it rain in September in Rognaix?
How much does it snow in Rognaix in September?
What is the average length of the day in September in Rognaix?
When are sunrise and sunset in September in Rognaix?
How long on average sun shines in September in Rognaix?
What is the UV index reading in September in Rognaix?
Average temperature in September
Rognaix, France
- Average high temperature in September: 14.3°C
The warmest month (with the highest average high temperature) is August (18.5°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in September: 4°C
The month with the highest average low temperature is August (6.5°C).
The coldest months (with the lowest average low temperature) are January and February (-11.3°C).
Average pressure in September
Rognaix, France
- 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 (1014.9mbar).
Average wind speed in September
Rognaix, France
- Average wind speed in September: 5.8km/h
The windiest month (with the highest average wind speed) is November (7.3km/h).
The calmest month (with the lowest average wind speed) is September (5.8km/h).
Average humidity in September
Rognaix, France
- Average humidity in September: 78%
The months with the highest relative humidity are February and March (88%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Rognaix, France
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is December (121mm).
The driest month (with the least rainfall) is September (40mm).
Average rainfall days in September
Rognaix, France
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is June (22.3 days).
The month with the least rainy days is December (5.8 days).
Average snowfall in September
Rognaix, France
- Average snowfall in September: 10mm
The month with the highest snowfall is December (934mm).
The month with the least snowfall is July (1mm).
Average snowfall days in September
Rognaix, France
- Average snowfall days in September: 1.4 days
The month with the highest number of snowfall days is March (17.4 days).
The month with the least snowfall days is August (0.1 days).
Average daylight in September /
Average sunshine in September
Rognaix, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in September
Rognaix, France
- Average sunshine days in September: 10 days
The month with the most sunshine days is October (17.2 days).
The months with the least sunshine days are May and June (4.3 days).
Average UV index in September
Rognaix, France
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 4).
The month with the lowest UV index is February (UV index 1).
Average cloud cover in September
Rognaix, France
- Average cloud cover in September: 34
The months with the most cloud cover are February and May (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in September
Rognaix, France
- Average visibility in September: 8km
The months with the highest visibility are April, May, June, July, August, September, October and November (8km).
The months with the lowest visibility are January, February, March and December (7km).
Rognaix, France
Weather forecast for your location
2. Allow the app to use your location
