September Weather in Blue Earth, United States

Last updated: June 24, 2025

In September, the average temperature in Blue Earth, United States hovers around 18°C (66°F). Expect a range from a chilly 3°C (37°F) to a warm 33°C (92°F). With 115 mm (4.5 in) of precipitation spread over 10 days, the humidity is a notable 75%, adding to the atmosphere of the season.

September Temperature in Blue Earth

In September in Blue Earth, the average temperature is 18°C (66°F). Maximums can reach 33°C (92°F), while minimums can drop to as low as 3°C (37°F). Be prepared for a wide range of temperatures to ensure a comfortable and enjoyable trip.

September Weather in Blue Earth: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Blue Earth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blue Earth, September typically has an average temperature of 18°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (37°F).

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

September Precipitation in Blue Earth

In Blue Earth in September, the precipitation amount is 115 mm (4.5 in) over a span of 10 days.

September Precipitation Trends in Blue Earth

The chart displays monthly precipitation patterns in Blue Earth, 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 Blue Earth, September typically receives around 115 mm (4.5 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 Blue Earth

In Blue Earth in September humidity is 75%. With an average temperature of 18°C (66°F), this humidity feels like traveling through a warm, damp sauna, where the air clings to your skin, making each step feel heavier and more laborious, and creating a unique atmosphere that both enlivens the senses and challenges your comfort level.

September Average Humidity in Blue Earth

This chart illustrates the average monthly humidity levels in Blue Earth, 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 Blue Earth is approximately 75%, 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 Blue Earth

In Blue Earth 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 Blue Earth.

Maximum UV Index Levels in Blue Earth for September

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

Data source: Blue Earth 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 Blue Earth Compares to Other Months

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

This table compares monthly weather conditions in Blue Earth, 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 (18°F)	35 mm (1.4 inches)	82%	moderate
February Weather	-8°C (17°F)	41 mm (1.6 inches)	84%	moderate
March Weather	1°C (34°F)	70 mm (2.8 inches)	80%	moderate
April Weather	7°C (45°F)	91 mm (3.6 inches)	81%	very high
May Weather	16°C (60°F)	145 mm (5.7 inches)	74%	very high
June Weather	22°C (72°F)	124 mm (4.9 inches)	80%	very high
July Weather	23°C (74°F)	111 mm (4.4 inches)	80%	very high
August Weather	21°C (71°F)	109 mm (4.3 inches)	77%	very high
September Weather	18°C (66°F)	115 mm (4.5 inches)	75%	very high
October Weather	9°C (49°F)	92 mm (3.6 inches)	80%	moderate
November Weather	2°C (35°F)	36 mm (1.4 inches)	87%	moderate
December Weather	-3°C (26°F)	42 mm (1.7 inches)	83%	moderate