September Weather in Sheffield, United States

Last updated: June 24, 2025

In Sheffield, United States, the average temperature in September hovers around 24°C (76°F), offering a pleasant climate for outdoor activities. However, temperatures can vary significantly, dipping as low as 10°C (51°F) and soaring up to 37°C (99°F). Expect about 115 mm (4.5 in) of precipitation spread over 8 days, contributing to an average humidity level of 70%. Perfect for nature lovers and those seeking a bit of adventure!

September Temperature in Sheffield

In September in Sheffield, the average temperature is 24°C (76°F), with maximums reaching 37°C (99°F) and minimums dipping as low as 10°C (51°F). This makes it an ideal time for travelers seeking warm weather along with comfortable evenings.

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 24°C (76°F), with highs reaching up to 37°C (99°F) and lows dropping to around 10°C (51°F).

Data source: Temperature data for Sheffield generated using information from the Copernicus Climate Change Service.

September Precipitation in Sheffield

In Sheffield in September, the precipitation amount is 115 mm (4.5 in) over the course of 8 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 115 mm (4.5 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Sheffield

In Sheffield in September, humidity is 70%. With an average temperature of 24°C (76°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel a bit sticky and heavier, so travelers should stay hydrated and take regular breaks to enjoy the sights comfortably.

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 70%, offering insight into how humid the weather typically is during this month.

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 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (44°F)	113 mm (4.5 inches)	86%	moderate
February Weather	9°C (49°F)	178 mm (7.0 inches)	85%	high
March Weather	13°C (56°F)	157 mm (6.2 inches)	84%	very high
April Weather	16°C (61°F)	159 mm (6.3 inches)	81%	very high
May Weather	22°C (71°F)	122 mm (4.8 inches)	83%	extreme
June Weather	25°C (78°F)	121 mm (4.7 inches)	83%	extreme
July Weather	27°C (81°F)	120 mm (4.7 inches)	80%	extreme
August Weather	27°C (80°F)	115 mm (4.5 inches)	73%	very high
September Weather	24°C (76°F)	115 mm (4.5 inches)	70%	very high
October Weather	18°C (65°F)	113 mm (4.4 inches)	73%	high
November Weather	10°C (51°F)	69 mm (2.7 inches)	85%	moderate
December Weather	9°C (48°F)	145 mm (5.7 inches)	88%	moderate