September Weather in LaPorte, United States

Last updated: June 24, 2025

In LaPorte, United States, the average temperature in September hovers around 20°C (68°F), offering a pleasant climate. Expect minimums as low as 4°C (40°F) and maximums reaching up to 33°C (92°F). This month sees an average precipitation of 74 mm (2.9 in) spread across 9 days, complemented by an average humidity of 78%.

September Temperature in LaPorte

In September, in LaPorte, the average temperature is 20°C (68°F). Maximums can reach 33°C (92°F), and minimums can be as low as 4°C (40°F). It's advisable to pack layers to accommodate both warm days and cooler nights while enjoying your travels.

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

The chart illustrates September temperature patterns in LaPorte, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In LaPorte, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in LaPorte

In LaPorte in September, the precipitation amount is 74 mm (2.9 in), which occurs over a span of 9 days.

September Precipitation Trends in LaPorte

The chart displays monthly precipitation patterns in LaPorte, 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 LaPorte, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 9 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 LaPorte

In LaPorte in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

September Average Humidity in LaPorte

This chart illustrates the average monthly humidity levels in LaPorte, 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 LaPorte is approximately 78%, 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 LaPorte

In LaPorte 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 LaPorte.

Maximum UV Index Levels in LaPorte for September

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

Data source: LaPorte 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 LaPorte Compares to Other Months

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

This table compares monthly weather conditions in LaPorte, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	71 mm (2.8 inches)	85%	moderate
February Weather	-2°C (29°F)	73 mm (2.9 inches)	85%	moderate
March Weather	4°C (40°F)	102 mm (4.0 inches)	86%	high
April Weather	9°C (49°F)	110 mm (4.3 inches)	87%	very high
May Weather	16°C (62°F)	173 mm (6.8 inches)	81%	very high
June Weather	22°C (72°F)	145 mm (5.7 inches)	82%	very high
July Weather	24°C (76°F)	119 mm (4.7 inches)	81%	very high
August Weather	23°C (73°F)	114 mm (4.5 inches)	79%	very high
September Weather	20°C (68°F)	74 mm (2.9 inches)	78%	very high
October Weather	13°C (56°F)	131 mm (5.2 inches)	81%	high
November Weather	5°C (41°F)	72 mm (2.8 inches)	89%	moderate
December Weather	1°C (34°F)	61 mm (2.4 inches)	86%	low