Forecast Details for Hayward, CA

Recent Locations: Santa Rosa, CA   Pomona, CA   Hayward, CA  
Tonight: Patchy fog between 11pm and 2am. Otherwise, mostly cloudy, with a low around 49. Calm wind.
Monday: Patchy fog before 7am. Otherwise, mostly cloudy, with a high near 65. Northeast wind 5 to 7 mph.
Monday Night: A 30 percent chance of rain after 4am. Cloudy, with a low around 50. Light east wind.
Tuesday: Rain, mainly after 10am. High near 60. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday Night: Rain. Low around 48. South wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday: Rain likely, mainly before 4pm. Mostly cloudy, with a high near 60. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night: A 30 percent chance of rain before 10pm. Partly cloudy, with a low around 45.
Thursday: Mostly sunny, with a high near 61.
Thursday Night: Partly cloudy, with a low around 43.
Friday: Mostly sunny, with a high near 63.
Friday Night: Mostly cloudy, with a low around 46.
Saturday: A chance of rain. Mostly cloudy, with a high near 60.
Saturday Night: Rain likely. Mostly cloudy, with a low around 45.
Sunday: Rain likely. Mostly cloudy, with a high near 56.

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Current U.S. National Radar--Current

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Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds

Weather Topic: What are Nimbostratus Clouds?

Home - Education - Cloud Types - Nimbostratus Clouds

Nimbostratus Clouds Next Topic: Precipitation

A nimbostratus cloud is similar to a stratus cloud in its formless, smooth appearance. However, a nimbostratus cloud is darker than a stratus cloud, because it is thicker.

Unlike a stratus cloud, a nimbostratus cloud typically brings with it the threat of moderate to heavy precipitation. In some cases, the precipitation may evaporate before reaching the ground, a phenomenon known as virga.

Next Topic: Precipitation

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