The best times to visit Los Altos for ideal weather are

April 9th to November 11th

based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.



Other Los Altos Travel Info

Weather in Los Altos


Average temperatures in Los Altos vary somewhat. Considering humidity, temperatures feel nice most of the year, excluding some cold weeks in the winter, with a very low chance of rain or snow throughout the year. The area is more temperate than most — in the 67th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Los Altos, the hottest months are September, August, and then July. See average monthly temperatures below. The warmest time of year is generally late August to early September where highs are regularly around 82.6°F (28.1°C) with temperatures rarely dropping below 59.8°F (15.4°C) at night.

Los Altos Temperatures (Fahrenheit)


Los Altos Temperatures (Celsius)


“Feels-Like” Temperatures

The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.

Los Altos Perceived Temperature (F)


Los Altos Perceived Temperature (C)



Average Los Altos Temperatures by Month

Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.

Show Fahrenheit

Month Avg. High (°F) Avg. Mean (°F) Avg. Low (°F)
Jan 61 50.3 41.5
Feb 63 52.8 44.5
Mar 67.1 55.8 47
Apr 70 57.8 49
May 72.8 61 52.3
Jun 77.1 64.9 56
Jul 77.3 66.3 59
Aug 77.7 66.5 59.2
Sep 79.6 66.7 57.8
Oct 75.5 63.1 53.9
Nov 66.8 55.9 47
Dec 59.9 50.6 42.6

Show Celsius

Month Avg. High (°C) Avg. Mean (°C) Avg. Low (°C)
Jan 16.1 10.2 5.3
Feb 17.2 11.6 6.9
Mar 19.5 13.2 8.3
Apr 21.1 14.3 9.4
May 22.7 16.1 11.3
Jun 25.1 18.3 13.3
Jul 25.2 19.1 15
Aug 25.4 19.2 15.1
Sep 26.4 19.3 14.3
Oct 24.2 17.3 12.2
Nov 19.3 13.3 8.3
Dec 15.5 10.3 5.9



Precipitation (Rain or Snow)

If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Los Altos are July, August, and then June. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around early May. For example, on the week of April 30th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid December with an average of 2 days of significant precipitation the week of December 17th.

When can you find snow in Los Altos? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.

Chance of Precipitation

The graph below shows the % chance of rainy and snowy days in Los Altos.

Days with precipitation

Snow on the Ground

The graph below shows the average snow on the ground in Los Altos (in).

Snow depth

Average Rain and Snow by Month

Show Inches

Month Daily Chance of Rain Average Snow Depth (in) Total Precipitation (in)
Jan 10% 0 1.7
Feb 18% 0 2.3
Mar 11% 0 1.4
Apr 11% 0 1
May 2% 0 0.2
Jun 1% 0 0.2
Jul 0% 0 0
Aug 0% 0 0
Sep 1% 0 0.2
Oct 6% 0 0.7
Nov 13% 0 1.3
Dec 22% 0 2.8

Show Centimeters

Month Daily Chance of Rain Average Snow Depth (cm) Total Precipitation (cm)
Jan 10 0 4.3
Feb 18 0 5.8
Mar 11 0 3.6
Apr 11 0 2.5
May 2 0 0.5
Jun 1 0 0.5
Jul 0 0 0
Aug 0 0 0
Sep 1 0 0.5
Oct 6 0 1.8
Nov 13 0 3.3
Dec 22 0 7.1


Humidity and Wind

Los Altos has some high humidity months, with other comfortably humid months. The least humid month is April (51.4% relative humidity), and the most humid month is December (62.3%).

Wind in Los Altos is usually calm. The windiest month is July, followed by June and May. July’s average wind speed of around 6.3 knots (7.2 MPH or 11.7 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid June where average top sustained speeds reach 16 knots, which is considered a moderate breeze.

Relative Humidity (%)

The graph below shows the average % humidity by month in Los Altos.

Avg. Relative Humidity


The graph below shows wind speed (max and average) in knots.

Max Sustained Wind
Average Daily Wind

Average Wind Speeds

Show Wind Speeds

All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.

Month Avg. Wind Avg. Wind Feel Sustained High Wind High Wind Feel
Jan 2.9 Barely noticeable 9.1 Gentle breeze
Feb 4 Light breeze 10.7 Gentle breeze
Mar 4.6 Light breeze 12.2 Gentle breeze
Apr 5.3 Light breeze 13.9 Significant breeze
May 5.9 Light breeze 14.8 Gentle breeze
Jun 6.2 Light breeze 15.5 Significant breeze
Jul 6.3 Light breeze 14.9 Gentle breeze
Aug 5.8 Light breeze 14.6 Significant breeze
Sep 4.5 Light breeze 12.5 Gentle breeze
Oct 3.7 Barely noticeable 10.9 Gentle breeze
Nov 2.9 Barely noticeable 9 Gentle breeze
Dec 3.4 Barely noticeable 9.4 Gentle breeze

Show Relative Humidity by Month

Month Avg. Relative Humidity
Jan 60.5%
Feb 61.3%
Mar 57%
Apr 51.4%
May 51.8%
Jun 55.2%
Jul 61.1%
Aug 61.3%
Sep 56.3%
Oct 55.7%
Nov 59.4%
Dec 62.3%


Is it Safe to Travel to Los Altos?

Our best data indicates this area is generally safe. As of Dec 04, 2023 there are no travel advisories or warnings for the United States; exercise normal security precautions. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Dec 04, 2023.


The Busiest and Least Crowded Months

The busiest month for tourism in Los Altos, CA, US is July, followed by August and May. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Los Altos in September. Those willing to visit at these times will likely find it the least expensive month.

Estimated Tourism by Month


Most Popular Months to Visit

Tourists Seeking Accommodations

Tourism graph is based on Google searches for services used by tourists relative to the rest of the year. Tourism data for this area is very reliable. Displayed data is calculated relative to the peak, so a score of 34.1 in September means 34.1% of the tourists vs. July.



Overall Los Altos Travel Experience by Season

Spring (March through May)

Humidity and temperatures combine to make this season feel moderate. Highs range from 75.5°F (24.2°C) and 63.7°F (17.6°C) with warmer temperatures in the later months. Rain is rare with 1 to 4 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.

Summer (June through August)

The middle-year months have very comfortable weather with high temperatures that are comfortable. These months see the least precipitation with about 0 days of precipitation per month. June – August is the busiest season for tourism in Los Altos, so lodging and other accommodations may cost more than usual.

Fall (September through November)

Fall daily highs range from 80.8°F (27.1°C) and 63.2°F (17.3°C), which will feel comfortable given the humidity and wind. It rains or snows a normal amount: 0 to 4 days per month. Tourism is the slowest during these months due to the weather, so hotels may be affordably priced.

Winter (December through February)

Weather is too cold this time of year in Los Altos to be enjoyable for warm weather travelers. The average high during this season is between 63.9°F (17.7°C) and 58.4°F (14.7°C). On average, it rains or snows a fair amount: 3 to 7 times per month. These times of year are fairly slow with tourists.


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