Los Altos, CA Weather & Climate Normals
Los Altos's real weather, in one number
Los Altos, CA scores 78/100 on this site's reading of NOAA's own 30-year normals: mild with real seasons. A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. 9 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Los Altos's hottest and coldest months
Los Altos's hottest month is Aug, averaging 68°F; its coldest is Dec, averaging 51°F, a 17.5°F swing across the year, one of the smaller gaps in this dataset.
Rain and snow in Los Altos
Over a typical year, Los Altos sees about 13.45in of precipitation a year across roughly 66 days with measurable rain or snow. That station has no snowfall reading, so none is shown rather than assumed.
Where Los Altos ranks
Los Altos ranks 155 of 4876 US cities in this dataset for comfort score, and 155 of 429 within CA. About 30,864 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from MOFFETT FEDERAL AIRFIELD, CA US, 3.7 miles from Los Altos, not a prediction for any specific day.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is