Forecast Details for San Francisco International Airport, CA

Overnight: Rain. Steady temperature around 57. Breezy, with a south southeast wind 21 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday: Rain. High near 64. Breezy, with a south wind 17 to 23 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night: Rain likely. Mostly cloudy, with a low around 56. South southeast wind 11 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday: Showers. High near 63. Windy, with a south wind 23 to 31 mph, with gusts as high as 39 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Friday Night: Showers. Low around 51. Breezy, with a southwest wind 14 to 22 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Saturday: Showers likely, mainly before 10am. 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: A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday: Rain likely. Mostly cloudy, with a high near 59.
Sunday Night: Rain likely. Mostly cloudy, with a low around 49.
Monday: Rain likely. Mostly cloudy, with a high near 61.
Monday Night: Rain likely. Mostly cloudy, with a low around 49.
Tuesday: Rain. Mostly cloudy, with a high near 61.
Tuesday Night: Rain likely. Mostly cloudy, with a low around 47.
Wednesday: A chance of rain. Partly sunny, with a high near 60.

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North America Water Vapor (Moisture)

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Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Cirrocumulus Clouds Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Cirrus Clouds Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation