September Weather in Lamoni, United States

Last updated: June 24, 2025

In September, the average temperature in Lamoni, United States hovers around 21°C (70°F). Expect a range from a cool 6°C (44°F) to a warm 33°C (91°F). During this month, you can anticipate approximately 125 mm (4.9 in) of precipitation spread over 8 days, with an average humidity of 73%. Stay prepared for varied weather!

September Temperature in Lamoni

In September in Lamoni, the average temperature is 21°C (70°F). Maximums can reach 33°C (91°F), while minimums can dip as low as 6°C (44°F). This climate makes it a great time for travelers to enjoy outdoor activities while being prepared for fluctuating temperatures.

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

The chart illustrates September temperature patterns in Lamoni, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lamoni, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (91°F) and lows dropping to around 6°C (44°F).

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

September Precipitation in Lamoni

In Lamoni in September, the precipitation amount is 125 mm (4.9 in) over the course of 8 days.

September Precipitation Trends in Lamoni

The chart displays monthly precipitation patterns in Lamoni, 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 Lamoni, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 8 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 Lamoni

In Lamoni in September, humidity is 73%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace that can make outdoor activities feel sweltering, so it's essential to stay hydrated and take breaks in the shade while exploring.

September Average Humidity in Lamoni

This chart illustrates the average monthly humidity levels in Lamoni, 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 Lamoni 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 Lamoni

In Lamoni in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Lamoni.

Maximum UV Index Levels in Lamoni for September

The chart shows the monthly maximum UV Index (UVI) for Lamoni 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 Lamoni typically reaches 9, which falls under the very high exposure category.

Data source: Lamoni 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 Lamoni Compares to Other Months

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

This table compares monthly weather conditions in Lamoni, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	45 mm (1.8 inches)	78%	moderate
February Weather	-2°C (28°F)	39 mm (1.5 inches)	80%	moderate
March Weather	6°C (43°F)	100 mm (3.9 inches)	77%	high
April Weather	11°C (51°F)	75 mm (3.0 inches)	77%	very high
May Weather	18°C (64°F)	161 mm (6.3 inches)	77%	very high
June Weather	24°C (76°F)	132 mm (5.2 inches)	81%	extreme
July Weather	25°C (78°F)	112 mm (4.4 inches)	81%	extreme
August Weather	24°C (75°F)	91 mm (3.6 inches)	77%	very high
September Weather	21°C (70°F)	125 mm (4.9 inches)	73%	very high
October Weather	12°C (54°F)	170 mm (6.7 inches)	75%	high
November Weather	5°C (41°F)	52 mm (2.0 inches)	85%	moderate
December Weather	1°C (34°F)	37 mm (1.5 inches)	83%	moderate