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
Grasby's average high-temperature in September is a refreshing 17.4°C (63.3°F), marking an insignificant difference from the 20°C (68°F) of August. Throughout September, the temperature in Grasby falls to an average low of 11.3°C (52.3°F).Humidity
The average relative humidity in September in Grasby is 79%.Rainfall
In Grasby, in September, it is raining for 7.4 days, with typically 9mm (0.35") of accumulated precipitation. In Grasby, during the entire year, the rain falls for 109.1 days and collects up to 154mm (6.06") of precipitation.Snowfall
April through October are months without snowfall.Daylight
In September, the average length of the day is 12h and 41min.On the first day of September in Grasby, sunrise is at 6:11 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 7:02 am and sunset at 6:40 pm BST.
Sunshine
The average sunshine in September is 7.1h.UV index
In Grasby, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 4 in September translates into this advice:
Exercise caution. Those with pale skin may experience burns in less than half an hour. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration.
Frequently asked questions
What are the temperatures in Grasby in September?
What is the average humidity in September in Grasby?
How much does it rain in Grasby in September?
When it does not snow in Grasby?
What is the average length of the day in September in Grasby?
When are sunrise and sunset in September in Grasby?
How many hours of sunshine does Grasby have in September?
What is the UV index intensity in September in Grasby?
Average temperature in September
Grasby, United Kingdom
- Average high temperature in September: 17.4°C
The warmest month (with the highest average high temperature) is August (20°C).
The month with the lowest average high temperature is January (5.9°C).
- Average low temperature in September: 11.3°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (2°C).
Average pressure in September
Grasby, United Kingdom
- Average pressure in September: 1015.6mbar
The month with the highest atmospheric pressure is May (1016.3mbar).
The month with the lowest atmospheric pressure is November (1009.1mbar).
Average wind speed in September
Grasby, United Kingdom
- Average wind speed in September: 14.9km/h
The windiest month (with the highest average wind speed) is December (19.7km/h).
The calmest month (with the lowest average wind speed) is July (13.4km/h).
Average humidity in September
Grasby, United Kingdom
- Average humidity in September: 79%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (76%).
Average rainfall in September
Grasby, United Kingdom
- Average rainfall in September: 9mm
The wettest month (with the highest rainfall) is June (20mm).
The driest month (with the least rainfall) is April (7mm).
Average rainfall days in September
Grasby, United Kingdom
- Average rainfall days in September: 7.4 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in September
Grasby, United Kingdom
- Average snowfall in September: 0mm
The month with the highest snowfall is December (8mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in September
Grasby, United Kingdom
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (3.1 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
Grasby, United Kingdom
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 1min
The month with the most sunshine is August (Average sunshine: 7h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days in September
Grasby, United Kingdom
- Average sunshine days in September: 20 days
The month with the most sunshine days is September (20 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in September
Grasby, United Kingdom
- Average UV index in September: 4
The month with the highest UV index is 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
Grasby, United Kingdom
- Average cloud cover in September: 49
The month with the most cloud cover is February (Cloud cover 61).
The months with the least cloud cover are April and September (Cloud cover 49).
Average visibility in September
Grasby, United Kingdom
- Average visibility in September: 9km
The months with the highest visibility are February and March (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October, November and December (9km).
Grasby, United Kingdom
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