Forecast Details for Greencastle, IN

Recent Locations: Shakopee, MN Creswell, NC Greencastle, IN

Today: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 10am. Cloudy, with a high near 61. Northeast wind 6 to 8 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: A chance of showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 3am, then a chance of showers and thunderstorms after 3am. Cloudy, with a low around 52. East northeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 40%.

Thursday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers after 2am. Low around 62. Breezy, with a south southwest wind 14 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Friday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 77. South southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 61. South wind 8 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday: Showers and possibly a thunderstorm. High near 69. South wind 11 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.

Saturday Night: A 40 percent chance of rain, mainly before 2am. Mostly cloudy, with a low around 38. West northwest wind around 11 mph, with gusts as high as 21 mph.

Sunday: A 10 percent chance of rain before 8am. Partly sunny, with a high near 50. West northwest wind 11 to 15 mph, with gusts as high as 24 mph.

Sunday Night: Mostly clear, with a low around 33. Northwest wind 5 to 9 mph becoming light north after midnight.

Monday: Sunny, with a high near 59.

Monday Night: A 20 percent chance of rain. Partly cloudy, with a low around 39.

Tuesday: Mostly sunny, with a high near 54.

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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