Forecast Details for San Jose, CA

Recent Locations: San Jose, CA

Overnight: Mostly clear, with a low around 51. Calm wind.

Friday: Sunny, with a high near 77. Light west northwest wind becoming northwest 5 to 10 mph in the afternoon. Winds could gust as high as 18 mph.

Friday Night: Increasing clouds, with a low around 50. North northwest wind 5 to 9 mph becoming calm after midnight.

Saturday: Mostly sunny, with a high near 79. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

Saturday Night: Mostly clear, with a low around 50. Northwest wind 5 to 10 mph becoming light west after midnight.

Sunday: Mostly sunny, with a high near 79.

Sunday Night: Partly cloudy, with a low around 51.

Monday: Sunny, with a high near 76.

Monday Night: Mostly clear, with a low around 52.

Tuesday: Sunny, with a high near 83.

Tuesday Night: Clear, with a low around 55.

Wednesday: Sunny, with a high near 87.

Wednesday Night: Clear, with a low around 54.

Juneteenth: Sunny, with a high near 85.

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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).

National Weather Forecast--Current

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

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 are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds