September Weather in Sheffield, United States

Last updated: June 24, 2025

In Sheffield, United States, the average temperature in September is a comfortable 19°C (66°F). However, you may experience a range with minimums dipping to 2°C (36°F) and maximums soaring up to 33°C (92°F). Expect about 106 mm (4.2 in) of precipitation over approximately 11 days, contributing to an average humidity of 75%. 🌦️

September Temperature in Sheffield

In September in Sheffield, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 2°C (36°F). This diverse climate makes Sheffield an ideal destination for travelers looking to experience a range of temperatures and activities.

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 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 2°C (36°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 106 mm (4.2 in) spread over a duration of 11 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 106 mm (4.2 inches) of precipitation spread over approximately 11 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 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

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 75%, 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 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.

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	-7°C (19°F)	37 mm (1.5 inches)	82%	moderate
February Weather	-8°C (19°F)	48 mm (1.9 inches)	84%	moderate
March Weather	2°C (35°F)	73 mm (2.9 inches)	80%	moderate
April Weather	8°C (46°F)	80 mm (3.2 inches)	81%	very high
May Weather	16°C (60°F)	162 mm (6.4 inches)	74%	very high
June Weather	22°C (73°F)	124 mm (4.9 inches)	80%	extreme
July Weather	24°C (75°F)	99 mm (3.9 inches)	80%	very high
August Weather	22°C (71°F)	117 mm (4.6 inches)	77%	very high
September Weather	19°C (66°F)	106 mm (4.2 inches)	75%	very high
October Weather	10°C (50°F)	120 mm (4.7 inches)	80%	moderate
November Weather	2°C (35°F)	49 mm (1.9 inches)	87%	moderate
December Weather	-3°C (28°F)	36 mm (1.4 inches)	83%	moderate