The warmest month in San Jose is August, with an average high of 29.1°C and an average low of 15.4°C. The coldest month is January, with an average high of 15°C and an average low of 6.5°C. Between 2016 and 2025, the highest temperature recorded was 46.7°C (September 6, 2022) and the lowest was -1.3°C (February 24, 2022).
| Month | Avg. high | Avg. low | Precipitation |
|---|---|---|---|
| January | 15°C | 6.5°C | 116 mm |
| February | 16.4°C | 6.5°C | 89 mm |
| March | 17.3°C | 7.7°C | 102 mm |
| April | 20.6°C | 9.5°C | 34 mm |
| May | 24°C | 11.7°C | 15 mm |
| June | 27.8°C | 14°C | 1 mm |
| July | 28.9°C | 14.8°C | 1 mm |
| August | 29.1°C | 15.4°C | 1 mm |
| September | 28.3°C | 15.2°C | 5 mm |
| October | 25°C | 12.8°C | 32 mm |
| November | 18.7°C | 9°C | 59 mm |
| December | 14.8°C | 6.8°C | 109 mm |
Based on daily historical weather data 2016–2025. Weather data by Open-Meteo.com.
Explore detailed temperature patterns in San Jose, United States through interactive candlestick charts. View historical weather data with daily temperature ranges, trends, and variations. Whether you're planning a trip to San Jose or analyzing local climate patterns, our unique visualization makes temperature data easy to understand. Get insights into San Jose's weather patterns from hourly updates to yearly historical data.