September Weather in Dell Rapids, United States

Last updated: June 24, 2025

In Dell Rapids, United States, the average temperature in September hovers around 18°C (65°F), with a minimum of 3°C (37°F) and a maximum soaring to 32°C (90°F). Expect about 113 mm (4.4 in) of precipitation over 9 days, contributing to an average humidity level of 75%.

September Temperature in Dell Rapids

In September in Dell Rapids, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 32°C (90°F), while the minimum can drop as low as 3°C (37°F). This varying climate makes it essential for travelers to pack for both warm and cool conditions.

September Weather in Dell Rapids: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dell Rapids, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dell Rapids, September typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 3°C (37°F).

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

September Precipitation in Dell Rapids

In Dell Rapids in September, the precipitation amount is 113 mm (4.4 in) over a period of 9 days.

September Precipitation Trends in Dell Rapids

The chart displays monthly precipitation patterns in Dell Rapids, 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 Dell Rapids, September typically receives around 113 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 Dell Rapids

In Dell Rapids in September, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

September Average Humidity in Dell Rapids

This chart illustrates the average monthly humidity levels in Dell Rapids, 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 Dell Rapids 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 Dell Rapids

In Dell Rapids 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 Dell Rapids.

Maximum UV Index Levels in Dell Rapids for September

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

Data source: Dell Rapids 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 Dell Rapids Compares to Other Months

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

This table compares monthly weather conditions in Dell Rapids, 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)	20 mm (0.8 inches)	80%	low
February Weather	-7°C (19°F)	23 mm (0.9 inches)	84%	moderate
March Weather	1°C (34°F)	63 mm (2.5 inches)	75%	moderate
April Weather	6°C (44°F)	75 mm (2.9 inches)	79%	very high
May Weather	15°C (58°F)	124 mm (4.9 inches)	74%	very high
June Weather	22°C (72°F)	83 mm (3.3 inches)	81%	extreme
July Weather	24°C (75°F)	86 mm (3.4 inches)	82%	very high
August Weather	21°C (71°F)	102 mm (4.0 inches)	80%	very high
September Weather	18°C (65°F)	113 mm (4.4 inches)	75%	very high
October Weather	9°C (48°F)	76 mm (3.0 inches)	77%	moderate
November Weather	1°C (34°F)	26 mm (1.0 inches)	85%	moderate
December Weather	-4°C (26°F)	38 mm (1.5 inches)	83%	low