September weather forecast
Châtillon-sous-les-Côtes, France

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Weather in September

September, the first month of the autumn in Châtillon-sous-les-Côtes, is also an enjoyable month, with temperature in the range of an average low of 9.3°C (48.7°F) and an average high of 18.5°C (65.3°F).

Temperature

The start of September comes with a small reduction in the average high-temperature, subtly receding from an agreeable 22.3°C (72.1°F) in August to a refreshing 18.5°C (65.3°F). In September, Châtillon-sous-les-Côtes's temperature tends to fall to an average low of 9.3°C (48.7°F) during the night.

Humidity

In Châtillon-sous-les-Côtes, the average relative humidity in September is 81%.

Rainfall

In Châtillon-sous-les-Côtes, in September, it is raining for 12.5 days, with typically 41mm (1.61") of accumulated precipitation. In Châtillon-sous-les-Côtes, during the entire year, the rain falls for 179.3 days and collects up to 612mm (24.09") of precipitation.

Snowfall

May through October are months without snowfall in Châtillon-sous-les-Côtes, France.

Daylight

In Châtillon-sous-les-Côtes, the average length of the day in September is 12h and 35min.
On the first day of the month, sunrise is at 06:55 and sunset at 20:20. On the last day of September, sunrise is at 07:36 and sunset at 19:18 CEST.

Sunshine

In September, the average sunshine is 7.8h.

UV index

The average daily maximum UV index in September in Châtillon-sous-les-Côtes is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: An average UV index of 3 in September transforms into this advice:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Updated: Feb 6, 2024 | Published by: Weather Atlas | Resources

Frequently asked questions

What is the usual temperature for Châtillon-sous-les-Côtes in September?

In Châtillon-sous-les-Côtes, in September, the average high-temperature is 18.5°C (65.3°F), and the average low-temperature is 9.3°C (48.7°F).

What is the average humidity in September in Châtillon-sous-les-Côtes?

In Châtillon-sous-les-Côtes, France, the average relative humidity in September is 81%.

How many days does it rain in September in Châtillon-sous-les-Côtes?

In Châtillon-sous-les-Côtes, in September, it is raining for 12.5 days, with typically 41mm (1.61") of accumulated precipitation.

When it does not snow in Châtillon-sous-les-Côtes?

May through October are months without snowfall in Châtillon-sous-les-Côtes, France.

How many hours of daylight does Châtillon-sous-les-Côtes have in September?

In Châtillon-sous-les-Côtes, the average day length in September is 12h and 35min.

When are sunrise and sunset in September in Châtillon-sous-les-Côtes?

In September, on the first day of the month, sunrise is at 06:55 and sunset at 20:20. On the last day of the month, in Châtillon-sous-les-Côtes, sunrise is at 07:36 and sunset at 19:18 CEST.

How many hours of sunshine does Châtillon-sous-les-Côtes have in September?

The average sunshine duration in September in Châtillon-sous-les-Côtes is 7.8h.

What is the UV index reading in September in Châtillon-sous-les-Côtes?

In September, the average daily maximum UV index in Châtillon-sous-les-Côtes, France, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Châtillon-sous-les-Côtes, France

Average temperature in September - Châtillon-sous-les-Côtes, France
  • Average high temperature in September: 18.5°C

The warmest months (with the highest average high temperature) are July and August (22.3°C).
The month with the lowest average high temperature is January (3.6°C).

  • Average low temperature in September: 9.3°C

The months with the highest average low temperature are July and August (12.3°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).

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Average pressure in September
Châtillon-sous-les-Côtes, France

Average pressure in September - Châtillon-sous-les-Côtes, France
  • Average pressure in September: 1017.9mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).

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Average wind speed in September
Châtillon-sous-les-Côtes, France

Average wind speed in September - Châtillon-sous-les-Côtes, France
  • Average wind speed in September: 10.5km/h

The windiest month (with the highest average wind speed) is February (16.1km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).

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Average humidity in September
Châtillon-sous-les-Côtes, France

Average humidity in September - Châtillon-sous-les-Côtes, France
  • Average humidity in September: 81%

The month with the highest relative humidity is December (92%).
The months with the lowest relative humidity are April and August (78%).

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Average rainfall in September
Châtillon-sous-les-Côtes, France

Average rainfall in September - Châtillon-sous-les-Côtes, France
  • Average rainfall in September: 41mm

The wettest month (with the highest rainfall) is December (74mm).
The driest month (with the least rainfall) is April (33mm).

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Average rainfall days in September
Châtillon-sous-les-Côtes, France

Average rainfall days in September - Châtillon-sous-les-Côtes, France
  • Average rainfall days in September: 12.5 days

The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (11.9 days).

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Average snowfall in September
Châtillon-sous-les-Côtes, France

Average snowfall in September - Châtillon-sous-les-Côtes, France
  • Average snowfall in September: 0mm

The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

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Average snowfall days in September
Châtillon-sous-les-Côtes, France

Average snowfall days in September - Châtillon-sous-les-Côtes, France
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is January (6.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in September /
Average sunshine in September
Châtillon-sous-les-Côtes, France

Average daylight in September / Average sunshine in September - Châtillon-sous-les-Côtes, France
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 18min).

  • Average sunshine in September: 7h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 12min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).

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Average sunshine days in September
Châtillon-sous-les-Côtes, France

Average sunshine days in September - Châtillon-sous-les-Côtes, France
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is September (15.2 days).
The months with the least sunshine days are June, November and December (9.6 days).

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Average UV index in September
Châtillon-sous-les-Côtes, France

Average UV index in September - Châtillon-sous-les-Côtes, France
  • Average UV index in September: 3

The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Châtillon-sous-les-Côtes, France

Average cloud cover in September - Châtillon-sous-les-Côtes, France
  • Average cloud cover in September: 42

The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 40).

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Average visibility in September
Châtillon-sous-les-Côtes, France

Average visibility in September - Châtillon-sous-les-Côtes, France
  • Average visibility in September: 8km

The months with the highest visibility are March, April and August (9km).
The month with the lowest visibility is November (7km).

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Châtillon-sous-les-Côtes, France

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