Forecast Details for Sacramento, CA

Recent Locations: West Harwich, MA Buffalo, NY Sacramento, CA

Tonight: Widespread dense fog, mainly after 5am. Otherwise, mostly cloudy, with a low around 49. Southwest wind around 6 mph becoming calm in the evening.

Monday: Areas of fog before 9am. Otherwise, mostly cloudy, with a high near 63. North northwest wind 7 to 10 mph, with gusts as high as 20 mph.

Monday Night: A 30 percent chance of rain after 4am. Cloudy, with a low around 48. West northwest wind around 5 mph becoming calm in the evening.

Tuesday: Rain likely, mainly between 10am and 4pm, then showers after 4pm. High near 55. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

Tuesday Night: Showers and possibly a thunderstorm, mainly before 4am, then rain likely after 4am. Low around 49. South southeast wind around 6 mph. Chance of precipitation is 80%.

Wednesday: Rain likely before 10am, then showers likely and possibly a thunderstorm between 10am and 4pm, then a slight chance of rain and thunderstorms after 4pm. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.

Wednesday Night: A 20 percent chance of rain before 10pm. Partly cloudy, with a low around 43.

Thursday: Mostly sunny, with a high near 59.

Thursday Night: Partly cloudy, with a low around 40.

Friday: Partly sunny, with a high near 60.

Friday Night: A slight chance of rain. Mostly cloudy, with a low around 44.

Saturday: A chance of rain. Cloudy, with a high near 56.

Saturday Night: Rain likely. Cloudy, with a low around 44.

Sunday: Rain likely. Mostly cloudy, with a high near 53.

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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

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

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

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