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
An average high-temperature of a moderate 15.9°C (60.6°F) marks September, exhibiting a close resemblance to the conditions in August. Allerston encounters an average temperature dip to a cool 11.1°C (52°F) throughout September, subtly lower than its daytime maximum.Humidity
The average relative humidity in September in Allerston, United Kingdom, is 82%.Rainfall
In Allerston, in September, it is raining for 13.6 days, with typically 30mm (1.18") of accumulated precipitation. In Allerston, during the entire year, the rain falls for 174.8 days and collects up to 441mm (17.36") of precipitation.Snowfall
In Allerston, snow does not fall in June through September.Daylight
In Allerston, the average length of the day in September is 12h and 42min.On the first day of September, sunrise is at 6:11 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:40 pm BST.
Sunshine
The average sunshine in September in Allerston is 7.4h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index in Allerston, United Kingdom. A UV Index of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: In September, the average maximum UV index of 4 translates into the following recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average September temperature in Allerston?
What is the average humidity in September in Allerston?
How many days does it rain in September in Allerston?
When it does not snow in Allerston?
Does it snow in Allerston in September?
What is the average length of the day in September in Allerston?
What time are sunrise and sunset in September in Allerston?
How long on average sun shines in September in Allerston?
What are the months with the highest UV index in Allerston?
What is the UV index intensity in September in Allerston?
Average temperature in September
Allerston, United Kingdom
- Average high temperature in September: 15.9°C
The warmest month (with the highest average high temperature) is August (17.9°C).
The month with the lowest average high temperature is January (5.7°C).
- Average low temperature in September: 11.1°C
The month with the highest average low temperature is August (12.8°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in September
Allerston, United Kingdom
- Average pressure in September: 1015mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.5mbar).
Average wind speed in September
Allerston, United Kingdom
- Average wind speed in September: 17.2km/h
The windiest month (with the highest average wind speed) is December (22.1km/h).
The calmest month (with the lowest average wind speed) is June (14.1km/h).
Average humidity in September
Allerston, United Kingdom
- Average humidity in September: 82%
The months with the highest relative humidity are January and December (86%).
The months with the lowest relative humidity are April, May and August (80%).
Average rainfall in September
Allerston, United Kingdom
- Average rainfall in September: 30mm
The wettest month (with the highest rainfall) is June (55mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in September
Allerston, United Kingdom
- Average rainfall days in September: 13.6 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (11.2 days).
Average snowfall in September
Allerston, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (54mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Allerston, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Allerston, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).
Average sunshine days in September
Allerston, United Kingdom
- Average sunshine days in September: 13.5 days
The month with the most sunshine days is April (15.7 days).
The month with the least sunshine days is November (9.1 days).
Average UV index in September
Allerston, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Allerston, United Kingdom
- Average cloud cover in September: 48
The months with the most cloud cover are February and November (Cloud cover 60).
The month with the least cloud cover is April (Cloud cover 47).
Average visibility in September
Allerston, United Kingdom
- Average visibility in September: 9km
The month with the highest visibility is August (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, September, October, November and December (9km).
