Weather radar San Jose
Real-time precipitation radar · California · United States
San Jose climate table – average temperature, precipitation & sunshine hours
The climate table for San Jose shows long-term monthly averages (2000–2023): average high and average low temperature in °C, monthly precipitation (mm), rainy days and sunshine hours per month. Data source: ERA5 reanalysis (ECMWF) via the WDTEC Climate Archive.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 15° | 15.8° | 17.6° | 19.5° | 22.8° | 26.3° | 28.2° | 28.5° | 27.9° | 24° | 18.3° | 14.4° |
| Avg low (°C) | 6° | 6.6° | 8° | 9° | 11.1° | 13.2° | 14.8° | 15.2° | 15.4° | 12.9° | 8.9° | 6.5° |
| Precipitation (mm) | 102 | 103 | 85 | 45 | 18 | 3 | 1 | 0 | 4 | 33 | 54 | 127 |
| Rainy days | 8 | 9 | 9 | 6 | 3 | 1 | 0 | 0 | 1 | 3 | 6 | 10 |
| Sunshine hours | 224 | 234 | 296 | 330 | 383 | 398 | 409 | 384 | 338 | 299 | 245 | 208 |
| Humidity | – | – | – | – | – | – | – | – | – | – | – | – |
Best time to visit San Jose
The best time to visit San Jose is typically July. In this month the average high is 28.2°C, precipitation is 1 mm and sunshine duration is 409 hours. The annual average high is 21.5°C, total annual precipitation is 575 mm (56 rainy days/year) and annual sunshine is 3748 hours.
Frequently asked questions about the weather in San Jose
How up to date is the weather radar for San Jose?
The weather radar for San Jose is updated every 5 minutes with new radar data from the US NEXRAD network. A 2-hour forecast animation is also available. Rainfall probability, wind gusts and UV index are available up to 14 days in advance.
What weather data is available for San Jose?
Besides the rain radar, RadarWeather provides for San Jose: rainfall probability, thunderstorm warning (CAPE index), wind gusts, UV index, air pressure, humidity, dew point, sunshine hours, snow line and a 14-day forecast based on ICON-D2, ECMWF IFS and GFS.
When are thunderstorms expected in San Jose?
The thunderstorm potential for San Jose is calculated from the CAPE index and lightning potential. Active storm cells and severe weather warnings are visible on the radar map in real time. Thunderstorm warnings are issued automatically as soon as storm cells are detected near San Jose.
What is the climate like in San Jose?
San Jose has an annual average high of 21.5°C. The warmest month is August (avg high 28.5°C), the coldest January (avg low 6°C). The wettest month is December with 127 mm, the driest August with 0 mm. Total annual precipitation is 575 mm (56 rainy days). Annual sunshine is 3748 hours.
Weather radar near San Jose
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