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
Weather in September
Temperature
September ushers in an average high-temperature of a comfortable 18.5°C (65.3°F), aligning closely with the preceding month. During September, Alconbury observes a consistent average nighttime temperature of 11°C (51.8°F).Humidity
The average relative humidity in September is 77%.Rainfall
In Alconbury, during September, the rain falls for 13.1 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, there are 186.7 rainfall days, and 464mm (18.27") of precipitation is accumulated.Snowfall
April through October are months without snowfall in Alconbury.Daylight
In Alconbury, the average length of the day in September is 12h and 40min.On the first day of the month, sunrise is at 6:13 am and sunset at 7:48 pm. On the last day of September, sunrise is at 7:01 am and sunset at 6:40 pm BST.
Sunshine
In September, the average sunshine is 7.1h.UV index
In September, the average daily maximum UV index in Alconbury is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 4 in September translates into these instructions:
Take necessary precautions - Defending against sun damage is advocated. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
Frequently asked questions
What is the average September temperature in Alconbury?
What is the average humidity in September in Alconbury?
How many days does it rain in September in Alconbury?
When it does not snow in Alconbury?
What is the average length of the day in September in Alconbury?
When is the sunrise / sunset in September in Alconbury?
How long on average sun shines in September in Alconbury?
How high is the UV index in September in Alconbury?
Average temperature in September
Alconbury, United Kingdom
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is July (21.1°C).
The month with the lowest average high temperature is January (6°C).
- Average low temperature in September: 11°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is January (1.6°C).
Average pressure in September
Alconbury, United Kingdom
- Average pressure in September: 1016.4mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in September
Alconbury, United Kingdom
- Average wind speed in September: 13.4km/h
The windiest month (with the highest average wind speed) is December (18.4km/h).
The calmest month (with the lowest average wind speed) is July (12.7km/h).
Average humidity in September
Alconbury, United Kingdom
- Average humidity in September: 77%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
Alconbury, United Kingdom
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is June (59mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Alconbury, United Kingdom
- Average rainfall days in September: 13.1 days
The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is February (11.9 days).
Average snowfall in September
Alconbury, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (32mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Alconbury, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.3 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
Alconbury, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is August (Average sunshine: 8h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Alconbury, United Kingdom
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is March (14.2 days).
The month with the least sunshine days is July (7 days).
Average UV index in September
Alconbury, United Kingdom
- Average UV index in September: 4
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).
Average cloud cover in September
Alconbury, United Kingdom
- Average cloud cover in September: 48
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 48).
Average visibility in September
Alconbury, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Alconbury, United Kingdom
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