Rosemead, CA Weather & Climate Normals
Rosemead's real weather, in one number
Rosemead, CA scores 77/100 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.
Rosemead's hottest and coldest months
Rosemead's hottest month is Aug, averaging 77°F; its coldest is Dec, averaging 57°F, a 20°F swing across the year, a middling gap by national standards.
Rain and snow in Rosemead
Rosemead averages 15.67in of precipitation a year across roughly 33 days with measurable rain or snow, and 0in of snow a year.
Where Rosemead ranks
Rosemead ranks 176 of 4876 US cities in this dataset for comfort score, and 176 of 429 within CA. About 49,582 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from SAN GABRIEL FIRE DEPT, CA US, 1.5 miles from Rosemead, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station