Forecast Details for Grannis, AR

Recent Locations: Grannis, AR

Today: Showers and thunderstorms likely, mainly between 4pm and 5pm. Mostly cloudy, with a high near 83. South southwest wind around 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight: A 40 percent chance of showers and thunderstorms, mainly between 2am and 4am. Mostly cloudy, with a low around 68. South southwest wind around 5 mph becoming calm.

Monday: A slight chance of showers and thunderstorms before 7am, then a chance of showers between 7am and 10am, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 85. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night: Partly cloudy, with a low around 69. Calm wind.

Tuesday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind becoming southwest around 5 mph in the afternoon.

Tuesday Night: Partly cloudy, with a low around 70. Calm wind.

Wednesday: Mostly sunny, with a high near 92. Calm wind becoming south southwest around 5 mph in the afternoon.

Wednesday Night: Mostly clear, with a low around 71. Southwest wind around 5 mph becoming calm.

Thursday: Mostly sunny, with a high near 93. Calm wind becoming southwest around 5 mph.

Thursday Night: Partly cloudy, with a low around 71.

Friday: Mostly sunny, with a high near 93.

Friday Night: Partly cloudy, with a low around 71.

Saturday: A 20 percent chance of showers and thunderstorms. Sunny, with a high near 93.

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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