September weather forecastGillancourt, France
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Gillancourt, France, with an average temperature fluctuating between 19.5°C (67.1°F) and 9.9°C (49.8°F).Temperature
As Gillancourt enters September, the average high-temperature subtly lowers from the a moderately hot 23.6°C (74.5°F) of August to a comfortable 19.5°C (67.1°F). An average low-temperature of 9.9°C (49.8°F) marks the month of September.Humidity
In September, the average relative humidity in Gillancourt is 79%.Rainfall
September is the month with the least rainfall. Rain falls for 11.7 days and accumulates 38mm (1.5") of precipitation.Snowfall
In Gillancourt, snow does not fall in April through October.Daylight
The average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 06:58 and sunset at 20:21. On the last day of September, in Gillancourt, sunrise is at 07:38 and sunset at 19:21 CEST.
Sunshine
In Gillancourt, the average sunshine in September is 8h.UV index
In Gillancourt, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: In September, a regular UV index of 4 translates into these guidelines:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Gillancourt, France
- Average high temperature in September: 19.5°C
The warmest month (with the highest average high temperature) is August (23.6°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in September: 9.9°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (-0.4°C).
Average pressure in September
Gillancourt, France
- Average pressure in September: 1018.3mbar
The month with the highest atmospheric pressure is December (1019.7mbar).
The month with the lowest atmospheric pressure is November (1014.8mbar).
Average wind speed in September
Gillancourt, France
- Average wind speed in September: 10.2km/h
The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (9.5km/h).
Average humidity in September
Gillancourt, France
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Gillancourt, France
- Average rainfall in September: 38mm
The wettest month (with the highest rainfall) is December (70mm).
The driest month (with the least rainfall) is September (38mm).
Average rainfall days in September
Gillancourt, France
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is September (11.7 days).
Average snowfall in September
Gillancourt, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (55mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Gillancourt, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Gillancourt, France
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in September
Gillancourt, France
- Average sunshine days in September: 16.6 days
The month with the most sunshine days is September (16.6 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in September
Gillancourt, France
- Average UV index in September: 4
The months with the highest UV index are 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
Gillancourt, France
- Average cloud cover in September: 38
The month with the most cloud cover is December (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Gillancourt, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
