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December is generally a mild month. The average temperature is of 10.8 °C (51 °F), with a minimum of 6.9 °C (44.5 °F) and a maximum of 14.7 °C (58.4 °F). On the coldest nights of the month, the temperature usually drops to around 2.5 °C (37 °F). However, it dropped to -1.4 °C (29.5 °F) in December 1998.
The month of the year in San Francisco with the warmest water is September, with an average temperature of 58°F. The time of year with cooler water lasts for 5.9 months , from December 18 to June 14 , with an average temperature below 54°F .
Station Data. Monthly averages San Francisco Longitude: -122.42, Latitude: 37.78 Average weather San Francisco, CA - 94102. Monthly: 1981-2010 normals
No matter how warm the day, at night the temperature always cools to less than 70 degrees. The city's hottest days usually occur in September and October. But 80-degree weather can appear any month from February to November. Days per month in San Francisco of at least 60, 70 or 80 °F. 60 °F.
Feb 9, 2024 · Summers in San Francisco are characterized by warm, dry conditions with longer daylight hours. From June to August, high temperatures rise to a peak of 72.5°F (22.5°C), while the lows maintain a comfortable average between 53.8°F (12.1°C) and 56.3°F (13.5°C). Rainfall is minimal during this season, hovering around a meager 0.08" (2mm) per ...
54.1. An average of 12.40°C | 54.32°F water temperatures is reached in San Francisco (San Francisco Bay) over the year. At 14.50°C | 58.10°F, the average monthly water temperature reaches its highest value in the year in September. Whereas in April the lowest value is measured with about 11.10°C | 51.98°F.
51 °F. annual average low. 11 °C. San Francisco's coldest days of the year usually occur from late December to mid January when the daily maximum temperature averages 57 degrees Fahrenheit (14 degrees Celsius) and the minimum averages 46 °F (8 °C). The year's hottest days are normally in late September.
