Skip to main content
One weather site to rule them all
checkweather.io
CheckWeather USLos Altos

Los Altos weather

Loading live data…

Los Altos weather alerts and warnings

active National Weather Service watches, warnings and advisories

Checking the National Weather Service for active alerts covering Los Altos…

Los Altos weather in numbers

from 30 years of measured normals

Los Altos swings 42°F across the year, from 84°F highs in July to 42°F lows in February, and January is usually the wettest month in a year that brings about 27 in of precipitation.

Warmest month
July
84°F average high
Coldest month
February
42°F average low
Wettest month
January
27 in a year
Below freezing
Never
overnight lows stay above 32°F
Comfortable
4 months
April, May, October and November
Residents
31,000
share this forecast

The weather map: all three models at once

NWS, American, European side by side around Los Altos and nearby towns.Live rain radar →
Loading the three model maps…

Los Altos hourly forecast: next 14 hours

consensus of the three models

Rain in the next 24 hours, model by model

each model's own hourly precipitation, side by side

Loading the three models…

Los Altos 10-day forecast, out to 14 days

where the models agree, and where they split

Los Altos, California (CA) is at its warmest in Jul (average highs near 84°F) and coldest in Feb (lows around 42°F), with roughly 27 in of precipitation across the year. Below, compare what NWS, American, European forecast for Los Altos right now, and see exactly where they disagree.

We grade every model against the weather that actually happened, so you can see which forecast model is most accurate in United States before you trust any single number.

Los Altos climate by month

average daytime high and overnight low across a typical year
Jan
57°
45°
Feb
57°
42°
Mar
59°
44°
Apr
66°
46°
May
72°
50°
Jun
79°
54°
Jul
84°
57°
Aug
82°
58°
Sep
79°
56°
Oct
78°
56°
Nov
64°
47°
Dec
60°
45°

Which forecast is most accurate in Los Altos?

CheckWeather Score, graded against the weather that actually happened
ProviderCheckWeather-scoreTempWindRainRun by
European logo
European ★ Best
94
/100rank #1
88±1.2°F96±1.3 mph100100% hitECMWF - European Centre for Medium-Range Weather ForecastsReading, United Kingdom
American logo
American
87
/100rank #2
75±2.5°F94±1.7 mph9597% hitNOAA / NCEP (United States)College Park, Maryland, USA

The CheckWeather Score blends temperature, wind and rain accuracy, each measured against ERA5 (the recorded weather) over the last 30 days across 1999 cities. Lower error means a higher score. See which forecast model is most accurate in United States, how we measure forecast accuracy, or which model each weather app uses.

What do you think of the forecasts?

your vote counts

The accuracy above is the measured record. This is your opinion: which forecast service do you trust most in United States? Give each 1 to 5 stars.

NWSNational Blend (NBM)
Loading ratings…
AmericanNOAA GFS
Loading ratings…
EuropeanECMWF
Loading ratings…

One vote per service. Anonymous: we store no personal data, only a one-way hash of your connection for a day to stop double votes.

Common questions

What's the weather in Los Altos today?
On this page we show what NWS, American, European each forecast for Los Altos today, side by side and updated live. When all three agree the forecast is reliable; when they split, we flag it so you know the day is genuinely less certain.
Will it rain in Los Altos today or tomorrow?
Check the hourly strip and 7-day forecast above. We compare rain from NWS, American, European for Los Altos and flag the days where the models disagree on whether showers actually arrive, which is exactly when a single app can catch you out.
Which forecast is most accurate for Los Altos?
Over the last 30 days, the European model has been the most accurate for Los Altos (CheckWeather Score 94/100), ahead of the American at 87. We grade every model against the recorded weather. See the US accuracy scoreboard for the full method.
What is the warmest month in Los Altos?
July is typically the warmest month in Los Altos, with average highs around 84°F.
How cold does Los Altos get?
The coldest month in Los Altos is February, when overnight lows average about 42°F.
How much rain does Los Altos get?
Los Altos sees roughly 27 in of precipitation a year, with January usually the wettest month.

Nearby

More US weather