September Weather in Arnolds Park, United States

Last updated: June 24, 2025

In September, the average temperature in Arnolds Park, United States hovers around 19°C (66°F). Expect a range where temperatures can dip as low as 4°C (39°F) and soar to a warm 33°C (91°F). During this time, you can anticipate approximately 112 mm (4.4 in) of rain across 9 days, with humidity levels averaging a comfortable 75%.

September Temperature in Arnolds Park

In September in Arnolds Park, the average temperature is 19°C (66°F). Maximum temperatures can reach 33°C (91°F), while minimums can drop as low as 4°C (39°F). This makes Arnolds Park an ideal destination for travelers seeking a pleasant climate with a range of temperatures.

September Weather in Arnolds Park: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Arnolds Park, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arnolds Park, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (91°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Arnolds Park

In Arnolds Park in September, the total precipitation amount is 112 mm (4.4 in), occurring over a span of 9 days.

September Precipitation Trends in Arnolds Park

The chart displays monthly precipitation patterns in Arnolds Park, 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 Arnolds Park, September typically receives around 112 mm (4.4 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 Arnolds Park

In Arnolds Park in September humidity is 75%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it slightly uncomfortable for traveling as you navigate through the thick, muggy air.

September Average Humidity in Arnolds Park

This chart illustrates the average monthly humidity levels in Arnolds Park, 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 Arnolds Park 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 Arnolds Park

In Arnolds Park 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 Arnolds Park.

Maximum UV Index Levels in Arnolds Park for September

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

Data source: Arnolds Park 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 Arnolds Park Compares to Other Months

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

This table compares monthly weather conditions in Arnolds Park, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	30 mm (1.2 inches)	80%	moderate
February Weather	-8°C (19°F)	38 mm (1.5 inches)	84%	moderate
March Weather	2°C (35°F)	69 mm (2.7 inches)	75%	moderate
April Weather	7°C (45°F)	100 mm (3.9 inches)	79%	very high
May Weather	15°C (60°F)	139 mm (5.5 inches)	74%	very high
June Weather	22°C (73°F)	128 mm (5.0 inches)	81%	extreme
July Weather	24°C (75°F)	80 mm (3.2 inches)	82%	very high
August Weather	22°C (71°F)	110 mm (4.3 inches)	80%	very high
September Weather	19°C (66°F)	112 mm (4.4 inches)	75%	very high
October Weather	9°C (49°F)	94 mm (3.7 inches)	77%	moderate
November Weather	2°C (35°F)	33 mm (1.3 inches)	85%	moderate
December Weather	-3°C (27°F)	41 mm (1.6 inches)	83%	moderate