Forecast Details for Gaithersburg, MD

Recent Locations: Milton, WA Mildred, PA Gaithersburg, MD

Current Alerts for Gaithersburg, MD: Freeze Warning Unnamed Alert

Tonight: Widespread frost after 2am. Otherwise, mostly cloudy during the early evening, then becoming clear, with a low around 30. Northwest wind 9 to 14 mph becoming light north after midnight. Winds could gust as high as 24 mph.

Tuesday: Widespread frost before 10am. Otherwise, sunny, with a high near 61. Calm wind becoming southwest around 6 mph in the afternoon.

Tuesday Night: A chance of showers after 2am. Increasing clouds, with a low around 48. South wind 6 to 8 mph. Chance of precipitation is 30%.

Wednesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 71. West wind 5 to 8 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Partly cloudy, with a low around 50. Northwest wind 3 to 5 mph.

Thursday: Sunny, with a high near 76.

Thursday Night: Partly cloudy, with a low around 54.

Friday: Mostly sunny, with a high near 78.

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

Saturday: Showers likely, mainly after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 60%.

Saturday Night: Showers likely. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

Sunday: A chance of showers. Partly sunny, with a high near 68. Chance of precipitation is 40%.

Sunday Night: A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 40%.

Monday: A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 40%.

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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)

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 is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds