September Weather in Crookston, United States

Last updated: June 24, 2025

In Crookston, United States, the average temperature in September is a comfortable 15°C (60°F). During this time, temperatures can swing from a chilly -3°C (26°F) to a warm 31°C (89°F). Expect about 81 mm (3.2 in) of precipitation over 10 days, with an average humidity level of 77%. Stay prepared for a mix of weather!

September Temperature in Crookston

In September in Crookston, the average temperature is 15°C (60°F), with maximums reaching 31°C (89°F) and minimums dipping as low as -3°C (26°F). Be sure to pack for a variety of weather conditions to fully enjoy your travels!

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

The chart illustrates September temperature patterns in Crookston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Crookston, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (89°F) and lows dropping to around -3°C (26°F).

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

September Precipitation in Crookston

In Crookston in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.

September Precipitation Trends in Crookston

The chart displays monthly precipitation patterns in Crookston, 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 Crookston, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 10 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 Crookston

In Crookston in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

September Average Humidity in Crookston

This chart illustrates the average monthly humidity levels in Crookston, 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 Crookston is approximately 77%, 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 Crookston

In Crookston 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 Crookston.

Maximum UV Index Levels in Crookston for September

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

Data source: Crookston 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 Crookston Compares to Other Months

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

This table compares monthly weather conditions in Crookston, 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 (9°F)	19 mm (0.7 inches)	90%	low
February Weather	-13°C (8°F)	22 mm (0.9 inches)	92%	moderate
March Weather	-3°C (27°F)	26 mm (1.0 inches)	85%	moderate
April Weather	4°C (39°F)	45 mm (1.8 inches)	81%	high
May Weather	13°C (56°F)	53 mm (2.1 inches)	75%	very high
June Weather	20°C (69°F)	90 mm (3.5 inches)	79%	very high
July Weather	22°C (72°F)	59 mm (2.3 inches)	76%	very high
August Weather	20°C (68°F)	73 mm (2.9 inches)	78%	very high
September Weather	15°C (60°F)	81 mm (3.2 inches)	77%	high
October Weather	6°C (43°F)	79 mm (3.1 inches)	79%	moderate
November Weather	-3°C (27°F)	26 mm (1.0 inches)	86%	moderate
December Weather	-9°C (17°F)	39 mm (1.5 inches)	86%	low