September Weather in Louise, United States

Last updated: June 24, 2025

In Louise, United States, the average temperature in September hovers around 27°C (81°F). Temperatures can vary significantly, dropping to a comfortable 13°C (56°F) at night while soaring to a sweltering 36°C (98°F) during the day. Expect 135 mm (5.3 in) of precipitation spread over 15 days, contributing to an average humidity of 73%. Whether you're basking in the warmth or navigating the occasional rain, Louise in September offers a dynamic climate experience!

September Temperature in Louise

In September in Louise, the average temperature is 27°C (81°F), with maximums reaching 36°C (98°F) and minimums dropping to as low as 13°C (56°F). Be prepared for warm days and cooler nights, making it a great time for outdoor adventures.

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

The chart illustrates September temperature patterns in Louise, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Louise, September typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (98°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Louise

In Louise in September, the precipitation amount is 135 mm (5.3 in), occurring over a span of 15 days.

September Precipitation Trends in Louise

The chart displays monthly precipitation patterns in Louise, 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 Louise, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 15 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 Louise

In Louise in September, humidity is 73%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel sticky and heavy, while also requiring frequent hydration breaks to stay comfortable during your travels.

September Average Humidity in Louise

This chart illustrates the average monthly humidity levels in Louise, 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 Louise is approximately 73%, 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 Louise

In Louise in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Louise.

Maximum UV Index Levels in Louise for September

The chart shows the monthly maximum UV Index (UVI) for Louise 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 Louise typically reaches 11, which falls under the extreme exposure category.

Data source: Louise 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 Louise Compares to Other Months

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

This table compares monthly weather conditions in Louise, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	62 mm (2.4 inches)	78%	moderate
February Weather	15°C (59°F)	70 mm (2.8 inches)	81%	very high
March Weather	19°C (67°F)	64 mm (2.5 inches)	76%	very high
April Weather	22°C (72°F)	69 mm (2.7 inches)	79%	extreme
May Weather	26°C (79°F)	117 mm (4.6 inches)	79%	extreme
June Weather	28°C (83°F)	140 mm (5.5 inches)	74%	extreme
July Weather	29°C (85°F)	113 mm (4.4 inches)	71%	extreme
August Weather	30°C (85°F)	139 mm (5.5 inches)	68%	extreme
September Weather	27°C (81°F)	135 mm (5.3 inches)	73%	extreme
October Weather	23°C (74°F)	79 mm (3.1 inches)	75%	very high
November Weather	18°C (64°F)	79 mm (3.1 inches)	78%	high
December Weather	15°C (59°F)	78 mm (3.1 inches)	84%	moderate