Forecast Details for San Francisco, CA

Recent Locations: San Francisco, CA

Current Alerts for San Francisco, CA: High Surf Advisory Wind Advisory

Overnight: Rain. Low around 56. Breezy, with a south wind 20 to 23 mph, with gusts as high as 43 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: Rain. High near 64. Breezy, with a south wind 18 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday Night: Rain. Low around 57. Breezy, with a south wind 18 to 24 mph, with gusts as high as 38 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Friday: Rain. High near 64. South wind 18 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

Friday Night: Rain. Patchy fog after 5am. Low around 52. South southwest wind 9 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

Saturday: Rain likely, mainly before 10am. Patchy fog before 10am. Otherwise, partly sunny, with a high near 61. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Saturday Night: Rain likely, mainly after 10pm. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 50. Chance of precipitation is 60%.

Sunday: Rain likely. Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 59.

Sunday Night: Rain likely. Mostly cloudy, with a low around 50.

Monday: Rain likely. Mostly cloudy, with a high near 61.

Monday Night: Rain. Mostly cloudy, with a low around 51.

Tuesday: Rain likely. Patchy fog. Otherwise, mostly cloudy, with a high near 61.

Tuesday Night: A chance of rain. Mostly cloudy, with a low around 50.

Wednesday: A chance of rain. Partly sunny, with a high near 61.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What is Hail?

Home - Education - Precipitation - Hail

Hail Next Topic: Hole Punch Clouds

Hail is a form of precipitation which is recognized by large solid balls or clumps of ice. Hail is created by thunderstorm clouds with strong updrafts of wind. As the hailstones remain in the updraft, ice is deposited onto them until their weight becomes heavy enough for them to fall to the earth's surface.

Hail storms can cause significant damage to crops, aircrafts, and man-made structures, despite the fact that the duration is usually less than ten minutes.

Next Topic: Hole Punch Clouds

Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds