Weather radar San Francisco
Real-time precipitation radar · California · United States
San Francisco climate table – average temperature, precipitation & sunshine hours
The climate table for San Francisco 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) | 15.3° | 16.4° | 16.7° | 19° | 21.2° | 22.6° | 23.3° | 24.7° | 24.9° | 23° | 18.1° | 14.2° |
| Avg low (°C) | 7.2° | 7° | 8.3° | 9.2° | 11.2° | 12.9° | 13.6° | 14.5° | 14.5° | 12.5° | 9° | 7.6° |
| Precipitation (mm) | 80 | 72 | 82 | 16 | 9 | 1 | 0 | 1 | 4 | 28 | 51 | 125 |
| Rainy days | 8 | 7 | 10 | 3 | 2 | 0 | 0 | 0 | 0 | 2 | 6 | 11 |
| Sunshine hours | 221 | 233 | 301 | 345 | 398 | 400 | 407 | 384 | 334 | 294 | 240 | 197 |
| Humidity | 77% | 73% | 72% | 70% | 68% | 70% | 74% | 73% | 73% | 70% | 75% | 84% |
Best time to visit San Francisco
The best time to visit San Francisco is typically July. In this month the average high is 23.3°C, precipitation is 0 mm and sunshine duration is 407 hours. The annual average high is 20°C, total annual precipitation is 469 mm (49 rainy days/year) and annual sunshine is 3754 hours.
Frequently asked questions about the weather in San Francisco
How up to date is the weather radar for San Francisco?
The weather radar for San Francisco 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 Francisco?
Besides the rain radar, RadarWeather provides for San Francisco: 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 Francisco?
The thunderstorm potential for San Francisco 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 Francisco.
What is the climate like in San Francisco?
San Francisco has an annual average high of 20°C. The warmest month is September (avg high 24.9°C), the coldest February (avg low 7°C). The wettest month is December with 125 mm, the driest July with 0 mm. Total annual precipitation is 469 mm (49 rainy days). Annual sunshine is 3754 hours.
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