September weather forecastSaint-Laon, France
September
Weather in September
September, the first month of the autumn in Saint-Laon, is also an agreeable month, with an average temperature ranging between min 11.7°C (53.1°F) and max 22°C (71.6°F).Temperature
The arrival of September suggests a slight decrease in the average high-temperature, moving from a warm 25.1°C (77.2°F) in August to a pleasant 22°C (71.6°F). During the September nights, an average temperature of 11.7°C (53.1°F) is observed in Saint-Laon.Humidity
The average relative humidity in September is 73%.Rainfall
September is the month with the least rainfall in Saint-Laon. Rain falls for 9.9 days and accumulates 26mm (1.02") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 33min.On the first day of September in Saint-Laon, sunrise is at 07:20 and sunset at 20:39. On the last day of the month, sunrise is at 07:58 and sunset at 19:41 CEST.
Sunshine
In Saint-Laon, France, the average sunshine in September is 8h.UV index
In Saint-Laon, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In September, an average UV index of 4 transforms into the following instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Minimize direct exposure to the Sun during midday when its radiation is at its peak. During bright days, sunglasses that offer UVA and UVB defense are recommended.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Saint-Laon, France
- Average high temperature in September: 22°C
The warmest month (with the highest average high temperature) is August (25.1°C).
The month with the lowest average high temperature is January (7.8°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is July (14.1°C).
The coldest month (with the lowest average low temperature) is February (2.2°C).
Average pressure in September
Saint-Laon, France
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1013.8mbar).
Average wind speed in September
Saint-Laon, France
- Average wind speed in September: 11.6km/h
The windiest month (with the highest average wind speed) is February (17.2km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in September
Saint-Laon, France
- Average humidity in September: 73%
The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Saint-Laon, France
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is November (54mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Saint-Laon, France
- Average rainfall days in September: 9.9 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is September (9.9 days).
Average snowfall in September
Saint-Laon, France
- Average snowfall in September: 0mm
The months with the highest snowfall are January and February (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Saint-Laon, France
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Saint-Laon, France
- Average daylight in September: 12h and 36min
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 36min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in September
Saint-Laon, France
- Average sunshine days in September: 17.5 days
The month with the most sunshine days is August (18.3 days).
The month with the least sunshine days is June (12 days).
Average UV index in September
Saint-Laon, France
- Average UV index in September: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 2).
Average cloud cover in September
Saint-Laon, France
- Average cloud cover in September: 35
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in September
Saint-Laon, France
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
