September Weather in Long Prairie, United States

Last updated: June 24, 2025

In Long Prairie, United States, the average temperature in September hovers around 16°C (61°F). During this time, temperatures can range from a chilly -1°C (31°F) to a warm 31°C (89°F). Expect approximately 114 mm (4.5 in) of precipitation spread over 9 days, coupled with an average humidity of 81%, making for a notably humid climate.

September Temperature in Long Prairie

In September in Long Prairie, the average temperature is 16°C (61°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures when traveling during this time!

September Weather in Long Prairie: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Long Prairie, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Long Prairie, September typically has an average temperature of 16°C (61°F), with highs reaching up to 31°C (89°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Long Prairie

In Long Prairie in September, the precipitation amount is 114 mm (4.5 in) over the course of 9 days.

September Precipitation Trends in Long Prairie

The chart displays monthly precipitation patterns in Long Prairie, 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 Long Prairie, September typically receives around 114 mm (4.5 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 Long Prairie

In Long Prairie in September, humidity is 81%. With an average temperature of 16°C (61°F), this humidity feels like a warm, heavy blanket wrapping around you as you explore the sights, making it essential to stay hydrated and take regular breaks in the shade.

September Average Humidity in Long Prairie

This chart illustrates the average monthly humidity levels in Long Prairie, 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 Long Prairie is approximately 81%, 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 Long Prairie

In Long Prairie in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Long Prairie.

Maximum UV Index Levels in Long Prairie for September

The chart shows the monthly maximum UV Index (UVI) for Long Prairie 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 Long Prairie typically reaches 7, which falls under the high exposure category.

Data source: Long Prairie 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 Long Prairie Compares to Other Months

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

This table compares monthly weather conditions in Long Prairie, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (13°F)	19 mm (0.8 inches)	87%	low
February Weather	-11°C (13°F)	22 mm (0.9 inches)	90%	moderate
March Weather	-1°C (30°F)	40 mm (1.6 inches)	85%	moderate
April Weather	4°C (40°F)	67 mm (2.6 inches)	84%	high
May Weather	13°C (56°F)	80 mm (3.1 inches)	78%	very high
June Weather	21°C (69°F)	76 mm (3.0 inches)	80%	very high
July Weather	22°C (73°F)	91 mm (3.6 inches)	81%	very high
August Weather	20°C (69°F)	117 mm (4.6 inches)	81%	very high
September Weather	16°C (61°F)	114 mm (4.5 inches)	81%	high
October Weather	7°C (45°F)	99 mm (3.9 inches)	84%	moderate
November Weather	-1°C (30°F)	27 mm (1.1 inches)	88%	moderate
December Weather	-7°C (20°F)	47 mm (1.8 inches)	84%	low