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September Weather in Thornton, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Thornton, United Kingdom hovers around 14°C (57°F), with a comfortable range that can dip to a minimum of 3°C (38°F) and peak at a warm 27°C (82°F). Throughout the month, expect about 64 mm (2.5 in) of precipitation spread over 12 days, accompanied by a notable average humidity of 85%. Whether you're exploring the local sights or enjoying a cozy day indoors, be prepared for a mix of weather!

September Temperature in Thornton

In September, in Thornton, the average temperature is 14°C (57°F). The maximum can reach 27°C (82°F), while the minimum can be as low as 3°C (38°F). It's an ideal time for travelers to enjoy a mix of pleasant warmth and cooler evenings, making it perfect for outdoor activities and sightseeing.

September Weather in Thornton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Thornton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Thornton, September typically has an average temperature of 14°C (57°F), with highs reaching up to 27°C (82°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec394144475359626157514541
Data source: Temperature data for Thornton generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Thornton

In Thornton in September, the total precipitation amount is 64 mm (2.5 in) over the course of 12 days.

September Precipitation Trends in Thornton

The chart displays monthly precipitation patterns in Thornton, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Thornton, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec476363357081748565836072
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Thornton

In Thornton in September, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

September Average Humidity in Thornton

This chart illustrates the average monthly humidity levels in Thornton, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Thornton is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%80%81%76%77%85%90%92%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Thornton

In Thornton in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Thornton.

Maximum UV Index Levels in Thornton for September

The chart shows the monthly maximum UV Index (UVI) for Thornton in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Thornton typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123578875321
Data source: Thornton September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Thornton Compares to Other Months

Weather in Thornton varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Thornton, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Thornton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (40°F)47 mm (1.8 inches)90%low
February Weather5°C (42°F)63 mm (2.5 inches)88%low
March Weather7°C (44°F)63 mm (2.5 inches)86%moderate
April Weather8°C (47°F)35 mm (1.4 inches)84%moderate
May Weather12°C (53°F)70 mm (2.8 inches)80%high
June Weather15°C (59°F)81 mm (3.2 inches)81%very high
July Weather17°C (62°F)74 mm (2.9 inches)76%very high
August Weather16°C (62°F)85 mm (3.4 inches)77%high
September Weather14°C (57°F)64 mm (2.5 inches)85%moderate
October Weather11°C (52°F)83 mm (3.3 inches)90%moderate
November Weather7°C (45°F)60 mm (2.4 inches)92%low
December Weather5°C (41°F)72 mm (2.8 inches)90%low

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