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September Weather in Laguna Hills, United States

Last updated: June 24, 2025

In Laguna Hills, United States, the average temperature in September is a pleasant 21°C (70°F). Expect a minimum of 15°C (59°F) and a maximum of 33°C (91°F), making it an ideal time for outdoor activities. With only 3 mm (0.1 in) of precipitation over 0 days, you can look forward to mostly dry weather. The average humidity hovers around 68%, ensuring a comfortable atmosphere throughout the month.

September Temperature in Laguna Hills

In September in Laguna Hills, the average temperature is 21°C (70°F) with maximums reaching up to 33°C (91°F) and minimums dropping as low as 15°C (59°F). This pleasant climate makes Laguna Hills an ideal destination for outdoor adventures and exploration during your travels.

September Weather in Laguna Hills: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Laguna Hills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Laguna Hills, September typically has an average temperature of 21°C (70°F), with highs reaching up to 33°C (91°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec575758616265707170686358
Data source: Temperature data for Laguna Hills generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Laguna Hills

In Laguna Hills in September, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

September Precipitation Trends in Laguna Hills

The chart displays monthly precipitation patterns in Laguna Hills, 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 Laguna Hills, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec6055542514333392269
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Laguna Hills

In Laguna Hills in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.

September Average Humidity in Laguna Hills

This chart illustrates the average monthly humidity levels in Laguna Hills, 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 Laguna Hills is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%79%75%71%70%72%73%69%68%67%68%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Laguna Hills

In Laguna Hills 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 Laguna Hills.

Maximum UV Index Levels in Laguna Hills for September

The chart shows the monthly maximum UV Index (UVI) for Laguna Hills 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 Laguna Hills typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010754
Data source: Laguna Hills 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 Laguna Hills Compares to Other Months

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

This table compares monthly weather conditions in Laguna Hills, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather14°C (58°F)60 mm (2.3 inches)74%moderate
February Weather14°C (57°F)55 mm (2.2 inches)79%high
March Weather14°C (58°F)54 mm (2.1 inches)75%very high
April Weather16°C (61°F)25 mm (1.0 inches)70%very high
May Weather16°C (62°F)14 mm (0.5 inches)70%extreme
June Weather18°C (65°F)3 mm (0.1 inches)72%extreme
July Weather21°C (70°F)3 mm (0.1 inches)73%extreme
August Weather22°C (71°F)3 mm (0.1 inches)69%very high
September Weather21°C (70°F)3 mm (0.1 inches)68%very high
October Weather20°C (68°F)9 mm (0.4 inches)67%high
November Weather17°C (63°F)22 mm (0.8 inches)68%moderate
December Weather14°C (58°F)69 mm (2.7 inches)71%moderate

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