Forecast Details for Greenwood Lake, NY

Recent Locations: Saint Petersburg, FL Falls Church, VA Greenwood Lake, NY

Today: Cloudy, with a high near 39. Light and variable wind becoming southeast around 5 mph in the afternoon.

Tonight: Snow and freezing rain likely after 4am. Cloudy, with a low around 30. East wind 3 to 6 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

Friday: Rain, snow and freezing rain, possibly mixed with sleet, becoming all rain after 10am. High near 37. Wind chill values between 25 and 35. East wind 5 to 7 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. New snow and sleet accumulation of less than a half inch possible.

Friday Night: A chance of rain before 4am, then a slight chance of rain and snow. Mostly cloudy, with a low around 31. Light and variable wind. Chance of precipitation is 40%.

Saturday: A slight chance of rain and snow before 10am, then a slight chance of rain. Mostly cloudy, with a high near 41. West wind 3 to 6 mph. Chance of precipitation is 20%.

Saturday Night: A 30 percent chance of snow. Mostly cloudy, with a low around 25.

Sunday: A 50 percent chance of snow. Mostly cloudy, with a high near 35.

Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 25.

Monday: A 30 percent chance of snow before 1pm. Mostly cloudy, with a high near 35.

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

Tuesday: Sunny, with a high near 33.

Tuesday Night: Partly cloudy, with a low around 17.

Wednesday: Mostly cloudy, with a high near 36.

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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 Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

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