Forecast Details for Annapolis, MD

Recent Locations: Tonkawa, OK Fort Yates, ND Annapolis, MD

Today: Sunny, with a high near 77. Southwest wind 11 to 14 mph, with gusts as high as 22 mph.

Tonight: Partly cloudy, with a low around 62. Southwest wind around 11 mph, with gusts as high as 21 mph.

Wednesday: A chance of showers between 2pm and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly sunny, with a high near 79. Southwest wind 9 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 50%.

Wednesday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 56. South wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 67. Southeast wind 6 to 10 mph. Chance of precipitation is 30%.

Thursday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.

Friday: Partly sunny, with a high near 73.

Friday Night: Mostly cloudy, with a low around 59.

Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 75. Chance of precipitation is 30%.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

Sunday: A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 50%.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.

Monday: A chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 30%.

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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