September Weather in Kuna, United States

Last updated: June 24, 2025

In Kuna, United States, the average temperature in September is a pleasant 20°C (68°F). However, temperatures can vary significantly, ranging from a cool 4°C (40°F) to a sizzling 39°C (102°F). Be prepared for some light rain, as the area typically sees around 10 mm (0.4 in) of precipitation over 2 days. With an average humidity of 48%, the climate is generally comfortable.

September Temperature in Kuna

In September in Kuna, the average temperature is 20°C (68°F). Maximums can reach 39°C (102°F) and minimums can be as low as 4°C (40°F). This wide temperature range makes it essential to pack both light clothing for the daytime heat and warmer layers for cooler evenings.

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

The chart illustrates September temperature patterns in Kuna, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kuna, September typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (102°F) and lows dropping to around 4°C (40°F).

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

September Precipitation in Kuna

In Kuna in September, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

September Precipitation Trends in Kuna

The chart displays monthly precipitation patterns in Kuna, 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 Kuna, September typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 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 Kuna

In Kuna in September humidity is 48%. With an average temperature of 20°C (68°F), this humidity feels like a pleasant and refreshing environment for traveling, creating an ideal atmosphere for exploring and enjoying outdoor activities.

September Average Humidity in Kuna

This chart illustrates the average monthly humidity levels in Kuna, 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 Kuna is approximately 48%, 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 Kuna

In Kuna 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 Kuna.

Maximum UV Index Levels in Kuna for September

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

Data source: Kuna 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 Kuna Compares to Other Months

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

This table compares monthly weather conditions in Kuna, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (34°F)	43 mm (1.7 inches)	88%	moderate
February Weather	3°C (37°F)	41 mm (1.6 inches)	89%	moderate
March Weather	8°C (47°F)	34 mm (1.3 inches)	85%	high
April Weather	12°C (54°F)	34 mm (1.3 inches)	79%	very high
May Weather	16°C (62°F)	35 mm (1.4 inches)	71%	very high
June Weather	22°C (72°F)	19 mm (0.7 inches)	71%	extreme
July Weather	27°C (82°F)	1 mm (0.1 inches)	66%	extreme
August Weather	26°C (79°F)	7 mm (0.3 inches)	50%	very high
September Weather	20°C (68°F)	10 mm (0.4 inches)	48%	very high
October Weather	12°C (53°F)	21 mm (0.8 inches)	65%	high
November Weather	6°C (43°F)	29 mm (1.1 inches)	84%	moderate
December Weather	2°C (35°F)	35 mm (1.4 inches)	87%	low