Forecast Details for Vallejo, CA

Recent Locations: Vallejo, CA  
Overnight: A 10 percent chance of showers after 5am. Mostly cloudy, with a low around 48. South wind around 6 mph.
Friday: Showers. High near 55. Southeast wind 9 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night: Showers and possibly a thunderstorm, mainly before 11pm, then a chance of showers and thunderstorms after 11pm. Low around 46. East southeast wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday: Showers likely, with thunderstorms also possible after 11am. Mostly cloudy, with a high near 61. East northeast wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night: Partly cloudy, with a low around 45. East northeast wind 5 to 10 mph becoming light north northeast after midnight.
Sunday: Mostly sunny, with a high near 64.
Sunday Night: Mostly clear, with a low around 45.
Monday: Sunny, with a high near 71.
Monday Night: Clear, with a low around 48.
Tuesday: Sunny, with a high near 73.
Tuesday Night: Mostly clear, with a low around 51.
Wednesday: Mostly sunny, with a high near 70.
Wednesday Night: Partly cloudy, with a low around 47.
Thursday: Sunny, with a high near 63.

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Current U.S. National Radar--Current

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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