Forecast Details for Arco, ID

Recent Locations: Falconer, NY Selma, OR Arco, ID

Overnight: A 30 percent chance of rain, mainly between 4am and 5am. Partly cloudy, with a low around 35. South wind 16 to 20 mph, with gusts as high as 29 mph.

Wednesday: Rain and snow before 2pm, then rain showers likely between 2pm and 3pm, then a chance of rain and snow showers after 3pm. Some thunder is also possible. High near 51. Windy, with a southwest wind 21 to 30 mph, with gusts as high as 41 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Wednesday Night: A chance of rain and snow before 7pm, then a chance of snow. Cloudy, then gradually becoming partly cloudy, with a low around 30. Breezy, with a west southwest wind 23 to 28 mph decreasing to 14 to 19 mph after midnight. Winds could gust as high as 37 mph. Chance of precipitation is 50%. Little or no snow accumulation expected.

Thursday: A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 52. Breezy, with a northwest wind 11 to 16 mph becoming west 18 to 23 mph in the afternoon. Winds could gust as high as 31 mph. Little or no snow accumulation expected.

Thursday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 25. Blustery, with a northwest wind 17 to 22 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 31 mph. Little or no snow accumulation expected.

Friday: A 40 percent chance of snow. Partly sunny, with a high near 48. Little or no snow accumulation expected.

Friday Night: A 20 percent chance of snow before midnight. Partly cloudy, with a low around 25.

Saturday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 53.

Saturday Night: A slight chance of rain before 3am, then a slight chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 20%.

Sunday: A slight chance of snow before 9am, then a chance of rain and snow. Partly sunny, with a high near 53. Chance of precipitation is 40%.

Sunday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 20%.

Monday: A chance of rain showers and snow. Some thunder is also possible. Mostly sunny, with a high near 53. Chance of precipitation is 30%.

Monday Night: Partly cloudy, with a low around 30.

Tuesday: A 20 percent chance of rain. Mostly sunny, with a high near 56.

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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