September Weather in Brownstown, United States

Last updated: June 24, 2025

In September, the average temperature in Brownstown, United States is a comfortable 21°C (70°F). However, be prepared for temperature fluctuations; it can drop as low as 5°C (42°F) and soar to a maximum of 34°C (93°F). During this month, expect 106 mm (4.2 in) of precipitation over about 10 days, contributing to an average humidity level of 75%. Stay ready for a mix of warmth and occasional rain!

September Temperature in Brownstown

In September in Brownstown, the average temperature is 21°C (70°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 5°C (42°F). This range makes Brownstown a perfect destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Brownstown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Brownstown, September typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (93°F) and lows dropping to around 5°C (42°F).

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

September Precipitation in Brownstown

In Brownstown in September, the precipitation amount is 106 mm (4.2 in) over a span of 10 days.

September Precipitation Trends in Brownstown

The chart displays monthly precipitation patterns in Brownstown, 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 Brownstown, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 10 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 Brownstown

In Brownstown in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

September Average Humidity in Brownstown

This chart illustrates the average monthly humidity levels in Brownstown, 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 Brownstown 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 Brownstown

In Brownstown 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 Brownstown.

Maximum UV Index Levels in Brownstown for September

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

Data source: Brownstown 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 Brownstown Compares to Other Months

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

This table compares monthly weather conditions in Brownstown, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (35°F)	62 mm (2.4 inches)	84%	moderate
February Weather	3°C (38°F)	103 mm (4.0 inches)	83%	moderate
March Weather	6°C (43°F)	102 mm (4.0 inches)	83%	high
April Weather	12°C (54°F)	97 mm (3.8 inches)	81%	very high
May Weather	18°C (64°F)	128 mm (5.0 inches)	78%	very high
June Weather	23°C (73°F)	100 mm (3.9 inches)	79%	very high
July Weather	26°C (78°F)	135 mm (5.3 inches)	74%	very high
August Weather	24°C (76°F)	138 mm (5.4 inches)	72%	very high
September Weather	21°C (70°F)	106 mm (4.2 inches)	75%	very high
October Weather	15°C (60°F)	99 mm (3.9 inches)	81%	high
November Weather	7°C (45°F)	89 mm (3.5 inches)	85%	moderate
December Weather	3°C (39°F)	96 mm (3.8 inches)	84%	low