Forecast Details for Alhambra, CA

Recent Locations: Alhambra, CA  
Overnight: Patchy fog. Otherwise, mostly cloudy, with a low around 52. South southeast wind around 5 mph.
Friday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 69. Calm wind becoming southwest around 5 mph in the afternoon.
Friday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 54. Southwest wind around 5 mph.
Saturday: Patchy fog before 11am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. Calm wind becoming southwest around 5 mph in the afternoon.
Saturday Night: Partly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm in the evening.
Sunday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 83.
Sunday Night: Mostly clear, with a low around 57.
Monday: Patchy fog before 11am. Otherwise, mostly sunny, with a high near 78.
Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 56.
Tuesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 70.
Tuesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 52.
Wednesday: Patchy fog. Otherwise, partly sunny, with a high near 68.
Wednesday Night: Patchy fog. Otherwise, mostly cloudy, with a low around 51.
Thursday: Patchy fog. Otherwise, mostly cloudy, with a high near 66.

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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).

Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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Tomorrows National Weather Map

North America Water Vapor (Moisture)

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North American Water Vapor Map

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