September weather forecastLanark, United Kingdom
September
Weather in September
September, the first month of the autumn in Lanark, is also a moderate month, with an average temperature varying between 13.5°C (56.3°F) and 7.6°C (45.7°F).Temperature
An average high-temperature of a still mild 13.5°C (56.3°F) marks September, exhibiting a close resemblance to the conditions in August. Lanark records an average nighttime low-temperature of 7.6°C (45.7°F) throughout September.Humidity
In September, the average relative humidity in Lanark is 91%.Rainfall
In Lanark, in September, it is raining for 22.1 days, with typically 59mm (2.32") of accumulated precipitation. In Lanark, United Kingdom, during the entire year, the rain falls for 261.4 days and collects up to 942mm (37.09") of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September is 12h and 44min.On the first day of the month, sunrise is at 6:21 am and sunset at 8:08 pm. On the last day of September, in Lanark, sunrise is at 7:17 am and sunset at 6:52 pm BST.
Sunshine
The average sunshine in September in Lanark is 4.4h.UV index
May through September, with an average maximum UV index of 3, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In September, a daily UV index of 3 turns into the following recommendations:
Make use of precautions - Suggestions to resist sunburn are communicated. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Lanark, United Kingdom
- Average high temperature in September: 13.5°C
The warmest month (with the highest average high temperature) is July (16.2°C).
The month with the lowest average high temperature is January (4°C).
- Average low temperature in September: 7.6°C
The month with the highest average low temperature is July (9.3°C).
The coldest month (with the lowest average low temperature) is January (0.4°C).
Average pressure in September
Lanark, United Kingdom
- Average pressure in September: 1013.6mbar
The month with the highest atmospheric pressure is May (1015.5mbar).
The month with the lowest atmospheric pressure is November (1007mbar).
Average wind speed in September
Lanark, United Kingdom
- Average wind speed in September: 14.7km/h
The windiest month (with the highest average wind speed) is January (19.3km/h).
The calmest months (with the lowest average wind speed) are June and July (12.8km/h).
Average humidity in September
Lanark, United Kingdom
- Average humidity in September: 91%
The months with the highest relative humidity are January, November and December (92%).
The month with the lowest relative humidity is April (84%).
Average rainfall in September
Lanark, United Kingdom
- Average rainfall in September: 59mm
The wettest month (with the highest rainfall) is August (105mm).
The driest month (with the least rainfall) is April (45mm).
Average rainfall days in September
Lanark, United Kingdom
- Average rainfall days in September: 22.1 days
The month with the highest number of rainy days is August (27.3 days).
The month with the least rainy days is February (16.7 days).
Average snowfall in September
Lanark, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is February (121mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Lanark, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Lanark, United Kingdom
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 24min).
The month with the shortest days is December (Average daylight: 7h and 6min).
- Average sunshine in September: 4h and 24min
The month with the most sunshine is April (Average sunshine: 5h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 0min).
Average sunshine days in September
Lanark, United Kingdom
- Average sunshine days in September: 4.5 days
The months with the most sunshine days are April and November (7.2 days).
The month with the least sunshine days is August (1.9 days).
Average UV index in September
Lanark, United Kingdom
- Average UV index in September: 3
The months with the highest UV index are May, June, July, August and September (UV index 3).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Lanark, United Kingdom
- Average cloud cover in September: 72
The month with the most cloud cover is August (Cloud cover 74).
The month with the least cloud cover is April (Cloud cover 62).
Average visibility in September
Lanark, United Kingdom
- Average visibility in September: 7km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (8km).
The months with the lowest visibility are July, August and September (7km).
