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August Weather in Los Altos, United States

Last updated: June 24, 2025

In August, the average temperature in Los Altos, United States hovers around 21°C (70°F). Temperatures can range from a cool 13°C (55°F) to a soaring 41°C (105°F). Remarkably, there’s no precipitation to worry about, with an impressive 0 mm (0.0 in) measured over 0 days. The air remains comfortably dry, with an average humidity of 54%.

August Temperature in Los Altos

In August in Los Altos, the average temperature is 21°C (70°F). Maximum can reach 41°C (105°F), and minimum can be as low as 13°C (55°F). This makes it a perfect time for travelers to enjoy the warm climate while being prepared for varying temperatures.

August Weather in Los Altos: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Los Altos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Los Altos, August typically has an average temperature of 21°C (70°F), with highs reaching up to 41°C (105°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec505254576066687068645650
Data source: Temperature data for Los Altos 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.

August Precipitation in Los Altos

In Los Altos in August, the precipitation amount is 0 mm (0.0 in) during 0 days.

August Precipitation Trends in Los Altos

The chart displays monthly precipitation patterns in Los Altos, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Los Altos, August typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec98958731241002224081
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Los Altos

In Los Altos in August humidity is 54%. With an average temperature of 21°C (70°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as you can comfortably explore the area without feeling overly sticky or fatigued.

August Average Humidity in Los Altos

This chart illustrates the average monthly humidity levels in Los Altos, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Los Altos is approximately 54%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%84%82%78%71%64%59%54%55%62%78%80%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Los Altos

In Los Altos in August, 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 Los Altos.

Maximum UV Index Levels in Los Altos for August

The chart shows the monthly maximum UV Index (UVI) for Los Altos in August, 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 August, the maximum UV index in Los Altos typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3589101111109753
Data source: Los Altos August 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 August Weather in Los Altos Compares to Other Months

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

This table compares monthly weather conditions in Los Altos, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)98 mm (3.9 inches)82%moderate
February Weather11°C (52°F)95 mm (3.8 inches)84%moderate
March Weather12°C (54°F)87 mm (3.4 inches)82%very high
April Weather14°C (57°F)30 mm (1.2 inches)78%very high
May Weather16°C (61°F)23 mm (0.9 inches)71%very high
June Weather19°C (66°F)1 mm (0.0 inches)64%extreme
July Weather20°C (69°F)0 mm (0.0 inches)58%extreme
August Weather21°C (70°F)0 mm (0.0 inches)54%very high
September Weather20°C (69°F)2 mm (0.1 inches)55%very high
October Weather18°C (64°F)22 mm (0.9 inches)62%high
November Weather13°C (56°F)40 mm (1.6 inches)78%moderate
December Weather10°C (51°F)81 mm (3.2 inches)80%moderate

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