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
September's arrival brings an average high-temperature of a still comfortable 16.2°C (61.2°F), slightly deviating from August's 17.3°C (63.1°F). Jeffreyston records a mild decrease in temperature during the nights of September, averaging a still refreshing 13.7°C (56.7°F).Humidity
The average relative humidity in September in Jeffreyston is 82%.Rainfall
In Jeffreyston, during September, the rain falls for 17.3 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, in Jeffreyston, there are 220.1 rainfall days, and 757mm (29.8") of precipitation is accumulated.Snowfall
In Jeffreyston, snow does not fall in April through October.Daylight
In Jeffreyston, the average length of the day in September is 12h and 38min.On the first day of September in Jeffreyston, sunrise is at 6:32 am and sunset at 8:05 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 6:58 pm BST.
Sunshine
In September, the average sunshine in Jeffreyston, United Kingdom, is 7.3h.UV index
May through October, with an average maximum UV index of 4, are months with the highest UV index in Jeffreyston. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 4 in September translates into this advice:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Jeffreyston?
What is the average humidity in September in Jeffreyston?
How many days does it rain in September in Jeffreyston?
When it does not snow in Jeffreyston?
What is the average length of the day in September in Jeffreyston?
What time are sunrise and sunset in September in Jeffreyston?
How long on average sun shines in September in Jeffreyston?
What are the months with the highest UV index in Jeffreyston?
What is the UV index intensity in September in Jeffreyston?
Average temperature in September
Jeffreyston, United Kingdom
- Average high temperature in September: 16.2°C
The warmest month (with the highest average high temperature) is August (17.3°C).
The month with the lowest average high temperature is February (8.4°C).
- Average low temperature in September: 13.7°C
The month with the highest average low temperature is August (15.1°C).
The coldest month (with the lowest average low temperature) is February (6.1°C).
Average pressure in September
Jeffreyston, United Kingdom
- Average pressure in September: 1016.6mbar
The month with the highest atmospheric pressure is May (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.6mbar).
Average wind speed in September
Jeffreyston, United Kingdom
- Average wind speed in September: 23.3km/h
The windiest month (with the highest average wind speed) is December (30.8km/h).
The calmest month (with the lowest average wind speed) is June (18.9km/h).
Average humidity in September
Jeffreyston, United Kingdom
- Average humidity in September: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is November (80%).
Average rainfall in September
Jeffreyston, United Kingdom
- Average rainfall in September: 55mm
The wettest month (with the highest rainfall) is November (102mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in September
Jeffreyston, United Kingdom
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is November (23.2 days).
The month with the least rainy days is May (14.9 days).
Average snowfall in September
Jeffreyston, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is January (11mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Jeffreyston, United Kingdom
- Average snowfall days in September: 0 days
The months with the highest number of snowfall days are January and February (0.9 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
Jeffreyston, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in September: 7h and 2min
The month with the most sunshine is May (Average sunshine: 8h and 36min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 48min).
Average sunshine days in September
Jeffreyston, United Kingdom
- Average sunshine days in September: 9.5 days
The month with the most sunshine days is May (13.3 days).
The month with the least sunshine days is November (4.4 days).
Average UV index in September
Jeffreyston, United Kingdom
- Average UV index in September: 4
The months with the highest UV index are May, June, July, August, September and October (UV index 4).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in September
Jeffreyston, United Kingdom
- Average cloud cover in September: 49
The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 44).
Average visibility in September
Jeffreyston, United Kingdom
- Average visibility in September: 10km
The months with the highest visibility are February, March, April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, November and December (9km).
