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September Weather in Sheffield, United States

Last updated: June 24, 2025

In September, the average temperature in Sheffield, United States is a pleasant 20°C (69°F), with a minimum of 4°C (40°F) and a maximum soaring to 35°C (94°F). Expect 103 mm (4.0 in) of precipitation over approximately 9 days during this month, contributing to the average humidity of 80%.

September Temperature in Sheffield

In September in Sheffield, the average temperature is 20°C (69°F). The maximum can reach 35°C (94°F), and the minimum can be as low as 4°C (40°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for both warm and cooler conditions.

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

The chart illustrates September temperature patterns in Sheffield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sheffield, September typically has an average temperature of 20°C (69°F), with highs reaching up to 35°C (94°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec252740506373767469553933
Data source: Temperature data for Sheffield 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 Sheffield

In Sheffield in September, the precipitation amount is 103 mm (4.0 in) over the course of 9 days.

September Precipitation Trends in Sheffield

The chart displays monthly precipitation patterns in Sheffield, 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 Sheffield, September typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec5764101115161160103721031295449
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sheffield

In Sheffield in September, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.

September Average Humidity in Sheffield

This chart illustrates the average monthly humidity levels in Sheffield, 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 Sheffield is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sheffield

In Sheffield 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 Sheffield.

Maximum UV Index Levels in Sheffield for September

The chart shows the monthly maximum UV Index (UVI) for Sheffield 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 Sheffield typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689111098642
Data source: Sheffield 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 Sheffield Compares to Other Months

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

This table compares monthly weather conditions in Sheffield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)57 mm (2.2 inches)82%moderate
February Weather-3°C (27°F)64 mm (2.5 inches)83%moderate
March Weather5°C (41°F)101 mm (4.0 inches)84%high
April Weather10°C (50°F)115 mm (4.5 inches)85%very high
May Weather17°C (63°F)161 mm (6.4 inches)79%very high
June Weather23°C (73°F)160 mm (6.3 inches)82%extreme
July Weather25°C (76°F)103 mm (4.0 inches)80%very high
August Weather23°C (74°F)72 mm (2.8 inches)81%very high
September Weather20°C (69°F)103 mm (4.0 inches)80%very high
October Weather13°C (55°F)129 mm (5.1 inches)82%high
November Weather4°C (39°F)54 mm (2.1 inches)88%moderate
December Weather0°C (33°F)49 mm (1.9 inches)84%low

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