September Weather in California City, United States

Last updated: June 24, 2025

In September, the average temperature in California City, United States is a warm 24°C (76°F). However, be prepared for a temperature range that can dip to a cool 5°C (41°F) at night or soar to a sizzling 41°C (106°F) during the day. With just 1 mm (0.0 in) of precipitation over 0 days, you can expect predominantly dry conditions. The humidity level hovers around 48%, adding a touch of comfort to your month in this vibrant locale.

September Temperature in California City

In September in California City, the average temperature is 24°C (76°F). Maximums can reach 41°C (106°F), while minimums can drop to as low as 5°C (41°F). Be prepared for a wide range of temperatures to make the most of your travel experience.

September Weather in California City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in California City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In California City, September typically has an average temperature of 24°C (76°F), with highs reaching up to 41°C (106°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in California City

In California City in September, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

September Precipitation Trends in California City

The chart displays monthly precipitation patterns in California City, 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 California City, September typically receives around 1 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 California City

In California City in September, humidity is 48%. With an average temperature of 24°C (76°F), this humidity feels like a pleasant embrace, making it comfortable for exploring the local sights and enjoying outdoor activities without feeling overly sticky or excessively hot.

September Average Humidity in California City

This chart illustrates the average monthly humidity levels in California City, 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 California City 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 California City

In California City 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 California City.

Maximum UV Index Levels in California City for September

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

Data source: California City 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 California City Compares to Other Months

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

This table compares monthly weather conditions in California City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	38 mm (1.5 inches)	78%	moderate
February Weather	9°C (49°F)	25 mm (1.0 inches)	82%	high
March Weather	12°C (53°F)	31 mm (1.2 inches)	75%	very high
April Weather	16°C (61°F)	15 mm (0.6 inches)	68%	very high
May Weather	20°C (68°F)	8 mm (0.3 inches)	57%	extreme
June Weather	26°C (79°F)	1 mm (0.0 inches)	52%	extreme
July Weather	29°C (85°F)	1 mm (0.0 inches)	46%	extreme
August Weather	28°C (84°F)	0 mm (0.0 inches)	39%	extreme
September Weather	24°C (76°F)	1 mm (0.0 inches)	48%	very high
October Weather	18°C (64°F)	2 mm (0.1 inches)	59%	very high
November Weather	12°C (55°F)	11 mm (0.4 inches)	72%	moderate
December Weather	8°C (46°F)	36 mm (1.4 inches)	76%	moderate