Forecast Details for San Fernando, CA

Recent Locations: San Fernando, CA

Current Alerts for San Fernando, CA: Beach Hazards Statement

Today: Sunny, with a high near 78. Light south southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

Tonight: Increasing clouds, with a low around 58. South wind 5 to 10 mph becoming light south southeast in the evening.

Tuesday: Patchy drizzle and fog before 11am. Cloudy through mid morning, then gradual clearing, with a high near 79. Light and variable wind becoming south southwest 5 to 10 mph in the afternoon.

Tuesday Night: Increasing clouds, with a low around 58. South southwest wind 5 to 10 mph becoming light south in the evening.

Wednesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 77. Calm wind becoming south southwest around 5 mph in the afternoon.

Wednesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 58.

Thursday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 81.

Thursday Night: Mostly clear, with a low around 59.

Friday: Sunny, with a high near 83.

Friday Night: Mostly clear, with a low around 60.

Saturday: Sunny, with a high near 85.

Saturday Night: Mostly clear, with a low around 61.

Sunday: Sunny, with a high near 85.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

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Weather Topic: What are Contrails?

Home - Education - Cloud Types - 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

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