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average temperature by month San Francisco. On average, the month of September experiences the highest temperature with an average value of 17.1 °C | 62.7 °F. During the month of January, the mean temperature registers at a minimum value of 9.6 °C | 49.2 °F.
Monthly temperature, precipitation and hours of sunshine. A climate graph showing rainfall, temperatures and normals.
Plan your visit with detailed insights on the climate in San Francisco (CA) by month. Get accurate forecasts for San Francisco temperature & weather by month, days, & hours.