Forecast Details for Johnstown, NE

Recent Locations: Arizona City, AZ Munith, MI Johnstown, NE

Overnight: A 20 percent chance of snow. Mostly cloudy, with a low around 32. East southeast wind around 10 mph, with gusts as high as 20 mph.

Wednesday: A slight chance of snow before 10am, then rain. High near 46. Southeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night: Rain. Low around 31. East southeast wind around 10 mph becoming north northeast after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 100%.

Thursday: A chance of snow before 10am, then a chance of rain between 10am and 1pm. Mostly cloudy, with a high near 52. North wind 5 to 10 mph. Chance of precipitation is 50%.

Thursday Night: Rain likely before 4am, then snow likely. Mostly cloudy, with a low around 28. East wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%.

Friday: Snow likely before 10am, then rain and snow likely between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 60%.

Friday Night: A 40 percent chance of snow, mainly before 1am. Mostly cloudy, with a low around 24.

Saturday: Partly sunny, with a high near 48. Breezy.

Saturday Night: Mostly clear, with a low around 25.

Sunday: Sunny, with a high near 64.

Sunday Night: Partly cloudy, with a low around 34.

Monday: Mostly sunny, with a high near 59.

Monday Night: Mostly cloudy, with a low around 26.

Tuesday: Partly sunny, with a high near 60.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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 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