San Jose, CA Weather & Climate Normals
San Jose's real weather, in one number
San Jose, 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.
San Jose's hottest and coldest months
San Jose's hottest month is Aug, averaging 71°F; its coldest is Dec, averaging 51°F, a 20.5°F swing across the year, a middling gap by national standards.
San Jose's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 59°F | 43°F | 2.97in | 0in |
| Feb | 63°F | 45°F | 3.24in | 0in |
| Mar | 66°F | 48°F | 2.64in | 0in |
| Apr | 70°F | 50°F | 1.24in | 0in |
| May | 75°F | 53°F | 0.54in | 0in |
| Jun | 80°F | 57°F | 0.17in | 0in |
| Jul | 82°F | 59°F | 0.01in | 0in |
| Aug | 83°F | 60°F | 0.03in | 0in |
| Sep | 81°F | 58°F | 0.07in | 0in |
| Oct | 75°F | 54°F | 0.8in | 0in |
| Nov | 65°F | 47°F | 1.36in | 0in |
| Dec | 59°F | 43°F | 3.07in | 0in |
most of the year (9 of 12 months) are the best time to see San Jose at its mildest; the rest of the year, plan around Dec's cold.
Rain and snow in San Jose
San Jose averages 16.14in of precipitation a year across roughly 64 days with measurable rain or snow, and 0in of snow a year.
Where San Jose ranks
San Jose ranks 164 of 4876 US cities in this dataset for comfort score, and 164 of 429 within CA. About 997,368 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from San Jose, CA US, 6.1 miles from San Jose, not a prediction for any specific day.
More on how this is worked out
How the comfort score is calculated · Why some cities show no snow or rain figure