Forecast Details for Jonesborough, TN

Recent Locations: Lowgap, NC Countyline, OK Jonesborough, TN

This Afternoon: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 78. West wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Showers and thunderstorms likely, mainly before 9pm. Partly cloudy, with a low around 58. South wind around 5 mph becoming calm. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Sunny, with a high near 80. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 58. South wind 5 to 10 mph.

Friday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 78. Southwest wind around 5 mph. Chance of precipitation is 40%.

Friday Night: A 30 percent chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 58. South wind around 5 mph.

Saturday: A slight chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then showers likely after 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 70%.

Sunday Night: A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 38.

Monday: Mostly sunny, with a high near 61.

Monday Night: Mostly clear, with a low around 39.

Tuesday: Mostly sunny, with a high near 64.

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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 Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain