September Weather in McNary, United States

Last updated: June 24, 2025

In September, the average temperature in McNary, United States is a pleasant 16°C (62°F). Expect a minimum dipping to 1°C (34°F) and a maximum reaching 30°C (87°F). With an average humidity of 66% and 44 mm (1.7 in) of precipitation spread over 7 days, it's a month that balances warmth with occasional refreshing showers.

September Temperature in McNary

In September in McNary, the average temperature is 16°C (62°F). Maximums can reach 30°C (87°F), and minimums can be as low as 1°C (34°F). This diverse temperature range makes it essential for travelers to pack accordingly for both warm days and cooler nights.

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

The chart illustrates September temperature patterns in McNary, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In McNary, September typically has an average temperature of 16°C (62°F), with highs reaching up to 30°C (87°F) and lows dropping to around 1°C (34°F).

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

September Precipitation in McNary

In McNary in September, the precipitation amount is 44 mm (1.7 in) spread over a duration of 7 days.

September Precipitation Trends in McNary

The chart displays monthly precipitation patterns in McNary, 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 McNary, September typically receives around 44 mm (1.7 inches) of precipitation spread over approximately 7 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 McNary

In McNary in September, humidity is 66%. With an average temperature of 16°C (62°F), this humidity feels like a warm embrace, creating a comfortable atmosphere for traveling while encouraging light layers and hydration during your adventures.

September Average Humidity in McNary

This chart illustrates the average monthly humidity levels in McNary, 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 McNary is approximately 66%, 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 McNary

In McNary in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in McNary.

Maximum UV Index Levels in McNary for September

The chart shows the monthly maximum UV Index (UVI) for McNary 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 McNary typically reaches 11, which falls under the extreme exposure category.

Data source: McNary 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 McNary Compares to Other Months

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

This table compares monthly weather conditions in McNary, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (33°F)	50 mm (2.0 inches)	81%	moderate
February Weather	1°C (34°F)	62 mm (2.4 inches)	82%	very high
March Weather	4°C (40°F)	49 mm (1.9 inches)	68%	extreme
April Weather	9°C (49°F)	21 mm (0.8 inches)	55%	extreme
May Weather	13°C (56°F)	23 mm (0.9 inches)	45%	extreme
June Weather	20°C (68°F)	10 mm (0.4 inches)	37%	extreme
July Weather	20°C (68°F)	166 mm (6.5 inches)	43%	extreme
August Weather	19°C (66°F)	67 mm (2.6 inches)	53%	extreme
September Weather	16°C (62°F)	44 mm (1.7 inches)	66%	extreme
October Weather	11°C (52°F)	30 mm (1.2 inches)	72%	very high
November Weather	6°C (43°F)	23 mm (0.9 inches)	81%	high
December Weather	1°C (34°F)	44 mm (1.7 inches)	84%	moderate