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
The shift from August to September in London includes a small decrease in the average high-temperature, from 85.5°F (29.7°C) to a still moderately hot 79.3°F (26.3°C). During September, London records an average temperature of 57.9°F (14.4°C) at night.Humidity
The average relative humidity in September is 76%.Rainfall
The month with the least rainfall in London is September, when the rain falls for 12.7 days and typically collects 2.2" (56mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In September, the average length of the day in London is 12h and 25min.On the first day of the month, sunrise is at 7:07 am and sunset at 8:04 pm. On the last day of September, in London, sunrise is at 7:31 am and sunset at 7:20 pm EDT.
Sunshine
The average sunshine in September in London is 8.3h.UV index
In London, the average daily maximum UV index in September is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: An average UV index of 5 in September transforms into this advice:
Take precautions - Protection against sunburn is recommended. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.
Frequently asked questions
What is the usual temperature for London in September?
What is the average humidity in September in London?
What is the driest month in London?
How many days does it rain in September in London?
When it does not snow in London?
Does it snow in London in September?
What is the average length of the day in September in London?
When is the sunrise / sunset in September in London?
How long on average sun shines in September in London?
What is the UV index intensity in September in London?
Average temperature in September
London, KY
- Average high temperature in September: 79.3°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in September: 57.9°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (27.1°F).
Average pressure in September
London, KY
- Average pressure in September: 30.04"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in September
London, KY
- Average wind speed in September: 4.6mph
The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in September
London, KY
- Average humidity in September: 76%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is August (75%).
Average rainfall in September
London, KY
- Average rainfall in September: 2.2"
The wettest month (with the highest rainfall) is February (4.25").
The driest month (with the least rainfall) is September (2.2").
Average rainfall days in September
London, KY
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is November (11.9 days).
Average snowfall in September
London, KY
- Average snowfall in September: 0"
The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
London, KY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (9.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
London, KY
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in September
London, KY
- Average sunshine days in September: 15.4 days
The month with the most sunshine days is October (16.1 days).
The month with the least sunshine days is February (9.4 days).
Average UV index in September
London, KY
- Average UV index in September: 5
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in September
London, KY
- Average cloud cover in September: 34
The months with the most cloud cover are January and February (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in September
London, KY
- Average visibility in September: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
London, Kentucky, USA
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