Forecast Details for Casper, WY

Recent Locations: Keo, AR Springfield, MA Casper, WY

Overnight: Partly cloudy, with a low around 10. Light east wind.

Sunday: Partly sunny, then gradually becoming sunny, with a high near 42. Calm wind becoming south around 5 mph.

Sunday Night: Mostly clear, with a low around 29. Breezy, with a light southwest wind becoming west southwest 10 to 15 mph in the evening. Winds could gust as high as 29 mph.

Monday: Mostly sunny, with a high near 52. Breezy, with a southwest wind 15 to 21 mph, with gusts as high as 31 mph.

Monday Night: Mostly cloudy, with a low around 38. Breezy, with a southwest wind around 21 mph, with gusts as high as 32 mph.

Tuesday: Mostly cloudy, with a high near 55. Windy, with a west southwest wind 21 to 26 mph, with gusts as high as 37 mph.

Tuesday Night: A 20 percent chance of showers after 11pm. Mostly cloudy, with a low around 37. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 38 mph.

Wednesday: A chance of rain showers before 11am, then a chance of rain and snow showers. Partly sunny, with a high near 53. Windy. Chance of precipitation is 40%.

Wednesday Night: A slight chance of rain and snow showers before 11pm. Mostly clear, with a low around 28. Windy. Chance of precipitation is 20%.

Thursday: Sunny, with a high near 53. Windy.

Thursday Night: Mostly clear, with a low around 34. Windy.

Friday: Sunny, with a high near 56. Very windy.

Friday Night: A slight chance of rain and snow showers. Partly cloudy, with a low around 27. Windy.

Saturday: Partly sunny, with a high near 47. Windy.

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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