Forecast Details for Casper, WY

Recent Locations: Laveen, AZ Switzer, WV Casper, WY

Current Alerts for Casper, WY: Winter Weather Advisory

Today: A chance of showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 67. Windy, with a southwest wind 22 to 32 mph becoming west northwest in the afternoon. Winds could gust as high as 48 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight: Rain and snow showers, becoming all snow after 10pm. Low around 25. Blustery, with a northwest wind 18 to 23 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday: Snow showers, mainly before noon. High near 38. West northwest wind 10 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Friday Night: A 20 percent chance of snow showers before midnight. Partly cloudy, with a low around 17. West southwest wind 5 to 10 mph.

Saturday: Sunny, with a high near 49. Breezy, with a west wind 9 to 18 mph, with gusts as high as 28 mph.

Saturday Night: Mostly clear, with a low around 26. Breezy, with a west wind 9 to 15 mph becoming south southwest after midnight. Winds could gust as high as 23 mph.

Sunday: Sunny, with a high near 65. Breezy, with a west southwest wind 10 to 17 mph, with gusts as high as 28 mph.

Sunday Night: Mostly clear, with a low around 35.

Monday: Mostly sunny, with a high near 72. Breezy.

Monday Night: Partly cloudy, with a low around 42.

Tuesday: A slight chance of showers and thunderstorms. Sunny, with a high near 76. Breezy.

Tuesday Night: A slight chance of showers. Partly cloudy, with a low around 45.

Wednesday: A chance of showers. Mostly sunny, with a high near 69. Breezy.

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

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet

Weather Topic: What is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds