September weather forecast
Stewartby, United Kingdom

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Weather in September

The first month of the autumn, September, is still a refreshing month in Stewartby, United Kingdom, with temperature in the range of an average high of 18.2°C (64.8°F) and an average low of 10.5°C (50.9°F).

Temperature

The ushering in of September brings an average high-temperature of a comfortable 18.2°C (64.8°F), closely mirroring the 20.7°C (69.3°F) of August. Throughout the month of September, Stewartby reports a steady low-temperature average of 10.5°C (50.9°F).

Humidity

In September, the average relative humidity in Stewartby, United Kingdom, is 80%.

Rainfall

The month with the least rainfall is September, when the rain falls for 8.5 days and typically collects 11mm (0.43") of precipitation.

Snowfall

May through October are months without snowfall in Stewartby.

Daylight

The average length of the day in September is 12h and 39min.
On the first day of the month, sunrise is at 6:14 am and sunset at 7:49 pm. On the last day of September, sunrise is at 7:02 am and sunset at 6:41 pm BST.

Sunshine

In September, the average sunshine in Stewartby is 7h.

UV index

The months with the highest UV index in Stewartby are May through September, with an average maximum UV index of 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Prioritize safety - Suggestions to prevent sun damage are offered. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.

Frequently asked questions

What are the temperatures in Stewartby in September?

During September, Stewartby experiences an average high-temperature of 18.2°C (64.8°F) and a low-temperature of 10.5°C (50.9°F).

What is the average humidity in September in Stewartby?

The average relative humidity in September in Stewartby is 80%.

What is the driest month in Stewartby?

The month with the least rainfall in Stewartby, United Kingdom, is September, when the rain falls for 8.5 days and typically collects 11mm (0.43") of precipitation.

How much does it rain in Stewartby in September?

In Stewartby, in September, it is raining for 8.5 days, with typically 11mm (0.43") of accumulated precipitation.

When it does not snow in Stewartby?

In Stewartby, snow does not fall in May through October.

How many hours of daylight does Stewartby have in September?

In September, the average day length is 12h and 39min.

When is the sunrise / sunset in September in Stewartby?

In September, on the first day of the month, sunrise is at 6:14 am and sunset at 7:49 pm. On the last day of the month, in Stewartby, United Kingdom, sunrise is at 7:02 am and sunset at 6:41 pm BST.

How many hours of sunshine does Stewartby have in September?

In Stewartby, United Kingdom, the average sunshine duration in September is 7h.

What is the month with the highest UV index in Stewartby?

The months with the highest UV index are May through September, with an average maximum UV index of 4.

What is the UV index intensity in September in Stewartby?

In Stewartby, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Stewartby, United Kingdom

Average temperature in September - Stewartby, United Kingdom
  • Average high temperature in September: 18.2°C

The warmest month (with the highest average high temperature) is July (20.8°C).
The month with the lowest average high temperature is January (6.1°C).

  • Average low temperature in September: 10.5°C

The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is January (1.5°C).

Average pressure in September
Stewartby, United Kingdom

Average pressure in September - Stewartby, United Kingdom
  • Average pressure in September: 1016.5mbar

The month with the highest atmospheric pressure is May (1016.6mbar).
The month with the lowest atmospheric pressure is November (1010.1mbar).

Average wind speed in September
Stewartby, United Kingdom

Average wind speed in September - Stewartby, United Kingdom
  • Average wind speed in September: 13.4km/h

The windiest month (with the highest average wind speed) is December (18.7km/h).
The calmest month (with the lowest average wind speed) is July (12.9km/h).

Average humidity in September
Stewartby, United Kingdom

Average humidity in September - Stewartby, United Kingdom
  • Average humidity in September: 80%

The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is August (78%).

Average rainfall in September
Stewartby, United Kingdom

Average rainfall in September - Stewartby, United Kingdom
  • Average rainfall in September: 11mm

The wettest month (with the highest rainfall) is June (28mm).
The driest month (with the least rainfall) is September (11mm).

Average rainfall days in September
Stewartby, United Kingdom

Average rainfall days in September - Stewartby, United Kingdom
  • Average rainfall days in September: 8.5 days

The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is September (8.5 days).

Average snowfall in September
Stewartby, United Kingdom

Average snowfall in September - Stewartby, United Kingdom
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (15mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).

Average snowfall days in September
Stewartby, United Kingdom

Average snowfall days in September - Stewartby, 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
Stewartby, United Kingdom

Average daylight in September / Average sunshine in September - Stewartby, 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 0min

The month with the most sunshine is July (Average sunshine: 7h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in September
Stewartby, United Kingdom

Average sunshine days in September - Stewartby, United Kingdom
  • Average sunshine days in September: 18.1 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is July (12.8 days).

Average UV index in September
Stewartby, United Kingdom

Average UV index in September - Stewartby, United Kingdom
  • Average UV index in September: 4

The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September
Stewartby, United Kingdom

Average cloud cover in September - Stewartby, United Kingdom
  • Average cloud cover in September: 50

The month with the most cloud cover is November (Cloud cover 62).
The month with the least cloud cover is September (Cloud cover 50).

Average visibility in September
Stewartby, United Kingdom

Average visibility in September - Stewartby, 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).

Stewartby, United Kingdom

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