Forecast Details for Truckee, CA

Recent Locations: Little Genesee, NY Underhill Center, VT Truckee, CA

This Afternoon: A 20 percent chance of showers. Partly sunny, with a high near 59. Southwest wind around 10 mph.

Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 35. South wind around 5 mph becoming calm in the evening.

Sunday: A 30 percent chance of showers, mainly after 4pm. Patchy fog before 7am. Snow level 8100 feet. Otherwise, mostly cloudy, with a high near 50. Light south wind becoming southwest 5 to 10 mph in the morning.

Sunday Night: A chance of rain and snow before 5am, then a slight chance of snow. Patchy fog after 4am. Snow level 7300 feet lowering to 6100 feet after midnight . Otherwise, mostly cloudy, with a low around 25. Southwest wind around 5 mph becoming calm. Chance of precipitation is 40%. Little or no snow accumulation expected.

Monday: A 20 percent chance of snow before 10am. Patchy fog before 9am. Snow level rising to 6500 feet in the afternoon. Otherwise, mostly sunny, with a high near 47. Calm wind.

Monday Night: Patchy fog after 9pm. Otherwise, mostly clear, with a low around 22. Calm wind.

Tuesday: Sunny, with a high near 55.

Tuesday Night: Partly cloudy, with a low around 25.

Wednesday: A chance of rain after 10am, mixing with snow after 1pm. Snow level 6300 feet. Partly sunny, with a high near 47.

Wednesday Night: A slight chance of rain and snow before 10pm. Patchy fog before 2am, then patchy fog after 3am. Otherwise, partly cloudy, with a low around 19.

Thursday: Mostly sunny, with a high near 46.

Thursday Night: Partly cloudy, with a low around 21.

Friday: Mostly sunny, with a high near 46.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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National Weather Forecast for Tomorrow

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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