Forecast Details for San Francisco, CA

Recent Locations: San Francisco, CA  
Overnight: Mostly cloudy, with a low around 52. West wind around 13 mph.
Saturday: Mostly sunny, with a high near 64. Breezy, with a west southwest wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 51. West wind 13 to 15 mph, with gusts as high as 20 mph.
Sunday: Sunny, with a high near 67. Breezy, with a north northwest wind 9 to 14 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 34 mph.
Sunday Night: Clear, with a low around 50. Breezy, with a west northwest wind 18 to 23 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Memorial Day: Sunny, with a high near 68. Breezy.
Monday Night: Clear, with a low around 52. Breezy.
Tuesday: Sunny, with a high near 72.
Tuesday Night: Mostly clear, with a low around 52.
Wednesday: Sunny, with a high near 71.
Wednesday Night: Partly cloudy, with a low around 54.
Thursday: Mostly sunny, with a high near 68.
Thursday Night: Partly cloudy, with a low around 54.
Friday: Partly sunny, with a high near 65.

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Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

Current U.S. National Radar

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

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

Tomorrows National Weather Map

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.

North American Water Vapor Map

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