September Weather in Murrieta, United States

Last updated: June 24, 2025

In Murrieta, United States, the average temperature in September hovers around 24°C (75°F), making it a pleasant time to visit. Temperatures can dip as low as 12°C (53°F), while soaring to a scorching 43°C (109°F). Expect minimal rain, with an average precipitation of just 4 mm (0.2 in) over 1 day. The climate is relatively comfortable, boasting an average humidity of 52%.

September Temperature in Murrieta

In September in Murrieta, the average temperature is 24°C (75°F). Maximum temperatures can reach 43°C (109°F), while minimum temperatures can drop to as low as 12°C (53°F). Be prepared for a wide range of temperatures, making it essential to pack accordingly for your travels.

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

The chart illustrates September temperature patterns in Murrieta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Murrieta, September typically has an average temperature of 24°C (75°F), with highs reaching up to 43°C (109°F) and lows dropping to around 12°C (53°F).

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

September Precipitation in Murrieta

In Murrieta in September, the precipitation amount is 4 mm (0.2 in) during 1 day.

September Precipitation Trends in Murrieta

The chart displays monthly precipitation patterns in Murrieta, 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 Murrieta, September typically receives around 4 mm (0.2 inches) of precipitation spread over approximately 1 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 Murrieta

In Murrieta in September humidity is 52%. With an average temperature of 24°C (75°F), this humidity feels like a comfortable warmth enveloping you, making it pleasant for outdoor activities and sightseeing, but you might feel the need for a light breeze or occasional shade to stay refreshed while exploring.

September Average Humidity in Murrieta

This chart illustrates the average monthly humidity levels in Murrieta, 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 Murrieta is approximately 52%, 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 Murrieta

In Murrieta 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 Murrieta.

Maximum UV Index Levels in Murrieta for September

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

Data source: Murrieta 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 Murrieta Compares to Other Months

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

This table compares monthly weather conditions in Murrieta, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	66 mm (2.6 inches)	72%	moderate
February Weather	13°C (55°F)	64 mm (2.5 inches)	77%	high
March Weather	14°C (57°F)	67 mm (2.6 inches)	67%	very high
April Weather	17°C (62°F)	31 mm (1.2 inches)	56%	very high
May Weather	18°C (64°F)	19 mm (0.8 inches)	46%	extreme
June Weather	21°C (70°F)	3 mm (0.1 inches)	48%	extreme
July Weather	25°C (77°F)	4 mm (0.2 inches)	46%	extreme
August Weather	25°C (77°F)	3 mm (0.1 inches)	42%	extreme
September Weather	24°C (75°F)	4 mm (0.2 inches)	52%	very high
October Weather	20°C (69°F)	11 mm (0.4 inches)	58%	high
November Weather	17°C (62°F)	28 mm (1.1 inches)	66%	moderate
December Weather	13°C (55°F)	66 mm (2.6 inches)	74%	moderate