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
Cier-de-Rivière in September experiences a gentle temperature dip, with average high-temperatures reducing from a pleasant 21.7°C (71.1°F) in August to a refreshing 18°C (64.4°F). Cier-de-Rivière observes an average low-temperature of 7.5°C (45.5°F) during September.Humidity
In September, the average relative humidity in Cier-de-Rivière is 73%.Rainfall
In September, in Cier-de-Rivière, the rain falls for 12.8 days. Throughout September, 45mm (1.77") of precipitation is accumulated. In Cier-de-Rivière, France, during the entire year, the rain falls for 149.7 days and collects up to 817mm (32.17") of precipitation.Snowfall
Months with snowfall are January through June, August through December. In Cier-de-Rivière, in September, during 0.4 snowfall days, 20mm (0.79") of snow is typically accumulated. In Cier-de-Rivière, during the entire year, snow falls for 90.2 days and aggregates up to 2798mm (110.16") of snow.Daylight
In September, the average length of the day in Cier-de-Rivière is 12h and 29min.On the first day of the month, sunrise is at 07:22 and sunset at 20:32. On the last day of September, in Cier-de-Rivière, sunrise is at 07:54 and sunset at 19:40 CEST.
Sunshine
In Cier-de-Rivière, the average sunshine in September is 9.4h.UV index
The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The average daily UV index of 4 in September transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Opt for tightly woven and loose clothing to enhance protection from the Sun. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Frequently asked questions
What is the usual temperature for Cier-de-Rivière in September?
What is the average humidity in September in Cier-de-Rivière?
How much does it rain in Cier-de-Rivière in September?
How much does it snow in Cier-de-Rivière in September?
How many hours of daylight does Cier-de-Rivière have in September?
What time are sunrise and sunset in September in Cier-de-Rivière?
How long on average sun shines in September in Cier-de-Rivière?
What is the UV index reading in September in Cier-de-Rivière?
Average temperature in September
Cier-de-Rivière, France
- Average high temperature in September: 18°C
The warmest months (with the highest average high temperature) are July and August (21.7°C).
The month with the lowest average high temperature is February (3.2°C).
- Average low temperature in September: 7.5°C
The month with the highest average low temperature is August (10.5°C).
The coldest month (with the lowest average low temperature) is February (-4.3°C).
Average pressure in September
Cier-de-Rivière, France
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1021.7mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in September
Cier-de-Rivière, France
- Average wind speed in September: 5.7km/h
The windiest month (with the highest average wind speed) is February (8.8km/h).
The calmest month (with the lowest average wind speed) is August (5.6km/h).
Average humidity in September
Cier-de-Rivière, France
- Average humidity in September: 73%
The months with the highest relative humidity are February and March (81%).
The months with the lowest relative humidity are July and August (70%).
Average rainfall in September
Cier-de-Rivière, France
- Average rainfall in September: 45mm
The wettest month (with the highest rainfall) is May (94mm).
The driest month (with the least rainfall) is February (43mm).
Average rainfall days in September
Cier-de-Rivière, France
- Average rainfall days in September: 12.8 days
The month with the highest number of rainy days is May (19.6 days).
The month with the least rainy days is January (5.9 days).
Average snowfall in September
Cier-de-Rivière, France
- Average snowfall in September: 20mm
The month with the highest snowfall is January (479mm).
The month with the least snowfall is July (0mm).
Average snowfall days in September
Cier-de-Rivière, France
- Average snowfall days in September: 0.4 days
The month with the highest number of snowfall days is January (15.3 days).
The month with the least snowfall days is July (0 days).
Average daylight in September /
Average sunshine in September
Cier-de-Rivière, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is November (Average sunshine: 6h and 24min).
Average sunshine days in September
Cier-de-Rivière, France
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is June (6.9 days).
Average UV index in September
Cier-de-Rivière, France
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Cier-de-Rivière, France
- Average cloud cover in September: 22
The month with the most cloud cover is April (Cloud cover 38).
The months with the least cloud cover are July, August and September (Cloud cover 22).
Average visibility in September
Cier-de-Rivière, France
- Average visibility in September: 9km
The months with the highest visibility are February, March, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January and April (8km).
Cier-de-Rivière, France
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