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September Weather in Preston, United States

Last updated: June 24, 2025

In September, the average temperature in Preston, United States hovers around 18°C (64°F). However, temperatures can range from a chilly 1°C (34°F) to a sweltering 32°C (91°F). Expect about 119 mm (4.7 in) of precipitation spread over 10 days, and the air will feel fairly humid with an average humidity of 74%. Whether you’re enjoying the mild warmth or preparing for rain, make sure to plan accordingly!

September Temperature in Preston

In September, in Preston, the average temperature is 18°C (64°F). Maximums can reach 32°C (91°F) and minimums can drop as low as 1°C (34°F). Travelers should be prepared for a range of temperatures, making layers a wise choice for their visit.

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

The chart illustrates September temperature patterns in Preston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Preston, September typically has an average temperature of 18°C (64°F), with highs reaching up to 32°C (91°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec181934445970737064493426
Data source: Temperature data for Preston 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 Preston

In Preston in September, the total precipitation amount is 119 mm (4.7 in) over the span of 10 days.

September Precipitation Trends in Preston

The chart displays monthly precipitation patterns in Preston, 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 Preston, September typically receives around 119 mm (4.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec364960851471401051051191235242
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Preston

In Preston in September humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

September Average Humidity in Preston

This chart illustrates the average monthly humidity levels in Preston, 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 Preston is approximately 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%85%84%83%75%79%75%69%74%79%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Preston

In Preston in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Preston.

Maximum UV Index Levels in Preston for September

The chart shows the monthly maximum UV Index (UVI) for Preston 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 Preston typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35589101098532
Data source: Preston 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 Preston Compares to Other Months

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

This table compares monthly weather conditions in Preston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (19°F)36 mm (1.4 inches)84%moderate
February Weather-7°C (19°F)49 mm (1.9 inches)85%moderate
March Weather1°C (35°F)60 mm (2.4 inches)84%moderate
April Weather7°C (44°F)85 mm (3.3 inches)83%very high
May Weather15°C (59°F)147 mm (5.8 inches)75%very high
June Weather21°C (71°F)140 mm (5.5 inches)79%very high
July Weather23°C (74°F)105 mm (4.1 inches)75%very high
August Weather21°C (70°F)105 mm (4.1 inches)69%very high
September Weather18°C (64°F)119 mm (4.7 inches)74%very high
October Weather9°C (49°F)123 mm (4.9 inches)79%moderate
November Weather1°C (34°F)52 mm (2.1 inches)88%moderate
December Weather-3°C (26°F)41 mm (1.6 inches)82%low

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