Forecast Details for Atascadero, CA

Recent Locations: Atascadero, CA  
Current Alerts for Atascadero, CA: High Surf Advisory
Overnight: A 50 percent chance of rain. Cloudy, with a low around 46. South southwest wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Thursday: Rain likely, mainly before 11am. Mostly cloudy, with a high near 62. West northwest wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night: Mostly cloudy, with a low around 40. West wind 5 to 10 mph, with gusts as high as 15 mph.
Friday: A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 54. Breezy, with a south wind 5 to 15 mph increasing to 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night: Rain. Low around 44. Windy, with a south wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Saturday: Rain likely, then rain and possibly a thunderstorm after 11am. High near 55. Chance of precipitation is 90%.
Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.
Sunday: A chance of showers after 11am. Partly sunny, with a high near 58.
Sunday Night: A slight chance of showers before 11pm. Partly cloudy, with a low around 41.
Monday: Sunny, with a high near 65.
Monday Night: Mostly clear, with a low around 42.
Tuesday: Sunny, with a high near 70.
Tuesday Night: Mostly clear, with a low around 46.
Wednesday: Sunny, with a high near 72.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - Contrails

Contrails Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Cumulus Clouds Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle