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
September indicates a minor shift in the average high-temperature, from August's warm 25.7°C (78.3°F) to an agreeable 21.3°C (70.3°F). In September, Grevilly reports a consistent average low-temperature of 10.8°C (51.4°F) during the nights.Humidity
The average relative humidity in September is 78%.Rainfall
September is the month with the least rainfall. Rain falls for 12.2 days and accumulates 40mm (1.57") of precipitation.Snowfall
April through September are months without snowfall.Daylight
In September, the average length of the day in Grevilly, France, is 12h and 33min.On the first day of the month, sunrise is at 07:01 and sunset at 20:19. On the last day of September, sunrise is at 07:38 and sunset at 19:22 CEST.
Sunshine
In September, the average sunshine is 8.5h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A daily high UV index of 4 in September leads to these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. When the Sun is at its strongest around midday, find shade and limit exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Grevilly in September?
What is the average humidity in September in Grevilly?
What is the driest month in Grevilly?
How much does it rain in Grevilly in September?
When it does not snow in Grevilly?
Does it snow in Grevilly in September?
What is the average length of the day in September in Grevilly?
What time are sunrise and sunset in September in Grevilly?
How long on average sun shines in September in Grevilly?
What is the UV index reading in September in Grevilly?
Average temperature in September
Grevilly, France
- Average high temperature in September: 21.3°C
The warmest month (with the highest average high temperature) is August (25.7°C).
The month with the lowest average high temperature is January (5.5°C).
- Average low temperature in September: 10.8°C
The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is February (0.1°C).
Average pressure in September
Grevilly, France
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in September
Grevilly, France
- Average wind speed in September: 8km/h
The windiest month (with the highest average wind speed) is February (11.6km/h).
The calmest month (with the lowest average wind speed) is August (7.4km/h).
Average humidity in September
Grevilly, France
- Average humidity in September: 78%
The month with the highest relative humidity is December (87%).
The month with the lowest relative humidity is August (74%).
Average rainfall in September
Grevilly, France
- Average rainfall in September: 40mm
The wettest month (with the highest rainfall) is November (86mm).
The driest month (with the least rainfall) is September (40mm).
Average rainfall days in September
Grevilly, France
- Average rainfall days in September: 12.2 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is September (12.2 days).
Average snowfall in September
Grevilly, France
- Average snowfall in September: 0mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in September
Grevilly, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (5.7 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grevilly, France
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in September: 8h and 3min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in September
Grevilly, France
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (14.7 days).
The month with the least sunshine days is May (7.3 days).
Average UV index in September
Grevilly, France
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Grevilly, France
- Average cloud cover in September: 34
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in September
Grevilly, France
- Average visibility in September: 8km
The months with the highest visibility are March, April, June, July and August (9km).
The months with the lowest visibility are January, February, May, September, October, November and December (8km).
