September Weather in Lead, United States

Last updated: June 24, 2025

In September, the average temperature in Lead, United States hovers around 14°C (57°F), with a minimum dipping to -7°C (19°F) and a maximum soaring to 34°C (93°F). Expect 62 mm (2.5 in) of precipitation over approximately 9 days, contributing to an average humidity of 77%.

September Temperature in Lead

In September in Lead, the average temperature is 14°C (57°F). The maximum can reach 34°C (93°F), while the minimum can drop to as low as -7°C (19°F). This diverse temperature range makes Lead an intriguing destination for travelers, offering both warm days and cool nights.

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

The chart illustrates September temperature patterns in Lead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lead, September typically has an average temperature of 14°C (57°F), with highs reaching up to 34°C (93°F) and lows dropping to around -7°C (19°F).

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

September Precipitation in Lead

In Lead in September, the precipitation amount is 62 mm (2.5 in) over a span of 9 days, indicating a relatively wet period.

September Precipitation Trends in Lead

The chart displays monthly precipitation patterns in Lead, 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 Lead, September typically receives around 62 mm (2.5 inches) of precipitation spread over approximately 9 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 Lead

In Lead in September, humidity is 77%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket wrapping around you, making outdoor exploration feel muggy and leaving you craving the shade while you travel.

September Average Humidity in Lead

This chart illustrates the average monthly humidity levels in Lead, 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 Lead is approximately 77%, 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 Lead

In Lead 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 Lead.

Maximum UV Index Levels in Lead for September

The chart shows the monthly maximum UV Index (UVI) for Lead 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 Lead typically reaches 8, which falls under the very high exposure category.

Data source: Lead 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 Lead Compares to Other Months

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

This table compares monthly weather conditions in Lead, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	29 mm (1.2 inches)	77%	moderate
February Weather	-8°C (19°F)	42 mm (1.6 inches)	80%	moderate
March Weather	0°C (32°F)	54 mm (2.1 inches)	70%	high
April Weather	2°C (36°F)	97 mm (3.8 inches)	70%	very high
May Weather	8°C (47°F)	133 mm (5.2 inches)	76%	very high
June Weather	16°C (61°F)	106 mm (4.2 inches)	84%	extreme
July Weather	19°C (67°F)	144 mm (5.7 inches)	85%	extreme
August Weather	18°C (64°F)	88 mm (3.5 inches)	84%	very high
September Weather	14°C (57°F)	62 mm (2.5 inches)	77%	very high
October Weather	4°C (40°F)	75 mm (2.9 inches)	73%	moderate
November Weather	0°C (33°F)	30 mm (1.2 inches)	74%	moderate
December Weather	-3°C (26°F)	40 mm (1.6 inches)	79%	low