January is the wettest month with 4.9" (124.5mm) of rainfall and the coldest with an average low temperature of 45°F (7.2°C). The warmest month (with the highest average high temperature) is September (21.2°C).
Coldest months (with the lowest average sea temperature) are April, May and June (11.7°C). The month with the lowest average high temperature is January (13.8°C). The highest day temperature during January of 2020 was 15°C. San Francisco averages one January thunderstorm every two years. The temperature, rainfall, sunshine and wind speed numbers here are historical averages based on climate data gathered in downtown San Francisco near the corner of Buchanan and Hermann Streets. Months with the highest average low temperature are August and September (12.8°C).
The month with least sunshine is December (Average sunshine: 5.2h). The climate in San Francisco during January can be summarized as warm and very dry. | Resources, A beautiful dusk view of the Golden Gate Bridge in San Francisco, California, with clear calm waters below, and a foggy formation beyond, In San Francisco, California, the average seawater temperature in, In San Francisco, the average length of the day in. January is in the winter in San Francisco and is typically the coldest month of the year. The month with the longest days is June (Average daylight: 14.7h). The highest and lowest sea temperatures during the month were class="nb">12.1°C and 11.0°C. The best month for swimming (with the highest average sea temperature) is September (14.1°C). , Weather Atlas | © 2002-2020 | Yu Media Group d.o.o. The shortest day of the month is the 1st with 9 hours and 37 minutes of daylight. What's the weather like in San Francisco (California) in January 2021? These durations can vary by a minute or two from year to year.
Yet the temperatures remain mild and well above freezing. This page gives detailed information on the typical January temperature, precipitation, sun, humidity, wind and storms for San Francisco. But January does not normally get cold enough for frost. What's the weather like in San Francisco, Costa Rica in January 2021? It makes January one of the least windy months of the year. January has the coldest weather of the year for San Francisco, California. The wettest month (with the highest rainfall) is January (125mm). Weather Atlas: San Francisco, CA - January weather forecast and climate information. In most years, San Francisco averages a daily maximum temperature for January that's between 55 and 59 degrees Fahrenheit (13 to 15 degrees Celsius). One in four years has drier weather, while another one in four is wetter. The month with most sunshine is May (Average sunshine: 10.5h). Precipitation total value in San Francisco in January is 67.8 mm. January weather forecast for San Francisco, California. The driest month (with the lowest rainfall) is July (1mm). Temperatures above 70 °F (21 °C) occur only rarely during January in San Francisco. The relative humidity in San Francisco during January usually peaks at 86 percent in the morning then drops to 66 percent by late afternoon. January is the coldest month overall for San Francisco and the 1st to 4th are its chilliest days. The month with the highest number of rainy days is January (11.7 days). Get San Francisco typical weather in January. The average sea water temperature in January of 2020 was 11.7°C. Daytime maximum temperatures average around a cool 13°C (56°F), whilst at night 7°C (44°F) is normal. Get the monthly weather forecast for San Francisco, CA, including daily high/low, historical averages, to help you plan ahead. These, along with the last few days of December have daily highs averaging 56.0 °F (13.3 °C) and lows of 45.2 °F (7.3 °C). Daytime maximum temperatures average around 23°C (74°F), whilst at night 15°C (59°F) is normal. January has the coldest weather of the year for San Francisco, California. Months with the lowest UV index are January and December (UV index 2). Typically on 9 days this month the sky is mainly clear, with at most 30 percent cloud cover.
Home | Privacy & Cookies | Contact | About. These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. January is less windy than most other months in San Francisco. Mostly all days in January are sunny but cloudy days are also possible. San Francisco Weather in January. The climate in San Francisco during January can be summarized as mild and wet. Yet the temperatures remain mild and well above freezing. January weather forecast for San Francisco, California.
The sun's rays reach the ground in San Francisco during 56 percent of daylight hours on average in January, for a total of 172 hours in the month. The rest of the measurements are averages at the San Francisco International Airport, located south of the city center. Daily high temperatures increase by 3°F, from 56°F to 59°F, rarely falling below 51°F or exceeding 65°F.The lowest daily average high temperature is 56°F on January 2.. Daily low temperatures are around 46°F, rarely falling below 39°F or exceeding 54°F.The lowest daily average low temperature is 45°F on January 3. The average number of sunny hours in January is: 6.1. This is the most humid month for San Francisco.
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