September Weather in Lower Brule, United States

Last updated: June 24, 2025

In September, the average temperature in Lower Brule, United States is a comfortable 19°C (66°F). You may experience a minimum of 4°C (39°F) and enjoy warm days with highs of 35°C (95°F). Expect around 66 mm (2.6 in) of precipitation over 7 days and a lush average humidity of 75%, making it a vibrant time to explore the area!

September Temperature in Lower Brule

In September in Lower Brule, the average temperature is 19°C (66°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 4°C (39°F). This pleasant range makes Lower Brule an ideal destination for travelers seeking a comfortable climate.

September Weather in Lower Brule: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Lower Brule, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lower Brule, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (95°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Lower Brule

In Lower Brule in September, the precipitation amount is 66 mm (2.6 in) over a period of 7 days.

September Precipitation Trends in Lower Brule

The chart displays monthly precipitation patterns in Lower Brule, 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 Lower Brule, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Lower Brule

In Lower Brule 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 Lower Brule

This chart illustrates the average monthly humidity levels in Lower Brule, 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 Lower Brule 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 Lower Brule

In Lower Brule 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 Lower Brule.

Maximum UV Index Levels in Lower Brule for September

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

Data source: Lower Brule 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 Lower Brule Compares to Other Months

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

This table compares monthly weather conditions in Lower Brule, 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 (20°F)	17 mm (0.7 inches)	77%	low
February Weather	-7°C (19°F)	20 mm (0.8 inches)	81%	moderate
March Weather	1°C (35°F)	44 mm (1.7 inches)	71%	moderate
April Weather	7°C (44°F)	57 mm (2.2 inches)	75%	high
May Weather	15°C (59°F)	79 mm (3.1 inches)	74%	very high
June Weather	23°C (73°F)	76 mm (3.0 inches)	82%	very high
July Weather	25°C (78°F)	77 mm (3.0 inches)	84%	very high
August Weather	23°C (74°F)	56 mm (2.2 inches)	82%	very high
September Weather	19°C (66°F)	66 mm (2.6 inches)	75%	very high
October Weather	9°C (48°F)	56 mm (2.2 inches)	72%	moderate
November Weather	2°C (36°F)	13 mm (0.5 inches)	81%	moderate
December Weather	-3°C (26°F)	29 mm (1.2 inches)	79%	low