September Weather in Big Lake, United States

Last updated: June 24, 2025

In Big Lake, United States, the average temperature in September hovers around 25°C (77°F), offering a warm atmosphere. However, temperatures can vary significantly, with minimums dipping to 6°C (43°F) and soaring to a maximum of 38°C (101°F). Expect some moisture in the air, as precipitation averages 56 mm (2.2 in) over 6 days, contributing to an average humidity level of 67%.

September Temperature in Big Lake

In September in Big Lake, the average temperature is 25°C (77°F). Maximums can reach 38°C (101°F), and minimums can be as low as 6°C (43°F). This variety in temperature makes Big Lake an ideal destination for travelers seeking diverse weather experiences.

September Weather in Big Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Big Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Big Lake, September typically has an average temperature of 25°C (77°F), with highs reaching up to 38°C (101°F) and lows dropping to around 6°C (43°F).

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

September Precipitation in Big Lake

In Big Lake in September, the precipitation amount is 56 mm (2.2 in) spread over 6 days.

September Precipitation Trends in Big Lake

The chart displays monthly precipitation patterns in Big Lake, 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 Big Lake, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 6 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 Big Lake

In Big Lake in September, humidity is 67%. With an average temperature of 25°C (77°F), this humidity feels like traveling through a warm, heavy blanket, making outdoor activities feel more strenuous and sticky than usual.

September Average Humidity in Big Lake

This chart illustrates the average monthly humidity levels in Big Lake, 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 Big Lake is approximately 67%, 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 Big Lake

In Big Lake 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 Big Lake.

Maximum UV Index Levels in Big Lake for September

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

Data source: Big Lake 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 Big Lake Compares to Other Months

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

This table compares monthly weather conditions in Big Lake, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	20 mm (0.8 inches)	74%	moderate
February Weather	10°C (50°F)	18 mm (0.7 inches)	74%	very high
March Weather	16°C (60°F)	38 mm (1.5 inches)	68%	very high
April Weather	19°C (67°F)	45 mm (1.8 inches)	70%	extreme
May Weather	24°C (75°F)	76 mm (3.0 inches)	77%	extreme
June Weather	27°C (81°F)	46 mm (1.8 inches)	76%	extreme
July Weather	29°C (84°F)	22 mm (0.8 inches)	66%	extreme
August Weather	28°C (83°F)	35 mm (1.4 inches)	60%	extreme
September Weather	25°C (77°F)	56 mm (2.2 inches)	67%	extreme
October Weather	19°C (67°F)	44 mm (1.8 inches)	72%	very high
November Weather	13°C (56°F)	17 mm (0.7 inches)	83%	high
December Weather	10°C (50°F)	18 mm (0.7 inches)	85%	moderate