September Weather in Boron, United States

Last updated: June 24, 2025

The average temperature in Boron, United States during September is a warm 26°C (79°F). Temperatures can vary significantly, with minimums dropping to 6°C (42°F) and maximums soaring up to 43°C (109°F). You can expect a dry month with 0 mm (0.0 in) of precipitation over 0 days, and enjoy a comfortable average humidity of 48%.

September Temperature in Boron

In September in Boron, the average temperature is 26°C (79°F). Maximum temperatures can reach up to 43°C (109°F) while minimum temperatures can drop as low as 6°C (42°F). It's advisable to prepare for a range of weather conditions when traveling to Boron during this time.

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

The chart illustrates September temperature patterns in Boron, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boron, September typically has an average temperature of 26°C (79°F), with highs reaching up to 43°C (109°F) and lows dropping to around 6°C (42°F).

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

September Precipitation in Boron

In Boron in September, the precipitation amount is 0 mm (0.0 in) during 0 days.

September Precipitation Trends in Boron

The chart displays monthly precipitation patterns in Boron, 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 Boron, September typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 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 Boron

In Boron in September humidity is 48%. With average temperature 26°C (79°F), this humidity feels like a warm, pleasant embrace that enhances the tropical atmosphere, making it a perfect setting for leisurely strolls and outdoor explorations.

September Average Humidity in Boron

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

In Boron in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Boron.

Maximum UV Index Levels in Boron for September

The chart shows the monthly maximum UV Index (UVI) for Boron 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 Boron typically reaches 10, which falls under the very high exposure category.

Data source: Boron 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 Boron Compares to Other Months

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

This table compares monthly weather conditions in Boron, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	29 mm (1.2 inches)	78%	moderate
February Weather	11°C (51°F)	19 mm (0.7 inches)	82%	high
March Weather	13°C (57°F)	23 mm (0.9 inches)	75%	very high
April Weather	18°C (65°F)	11 mm (0.4 inches)	68%	very high
May Weather	21°C (71°F)	4 mm (0.2 inches)	57%	extreme
June Weather	27°C (81°F)	0 mm (0.0 inches)	52%	extreme
July Weather	31°C (88°F)	1 mm (0.0 inches)	46%	extreme
August Weather	30°C (87°F)	0 mm (0.0 inches)	39%	extreme
September Weather	26°C (79°F)	0 mm (0.0 inches)	48%	very high
October Weather	19°C (66°F)	2 mm (0.1 inches)	59%	very high
November Weather	13°C (57°F)	9 mm (0.3 inches)	72%	moderate
December Weather	8°C (48°F)	29 mm (1.1 inches)	76%	moderate