Forecast Details for Big Sky, MT

Recent Locations: Big Sky, MT

Today: Partly sunny, with a high near 38. Southeast wind 5 to 9 mph, with gusts as high as 24 mph.

Tonight: A 40 percent chance of snow, mainly before 3am. Mostly cloudy, with a low around 22. East wind 6 to 11 mph becoming west after midnight. Winds could gust as high as 29 mph. New snow accumulation of less than a half inch possible.

Sunday: Mostly sunny, with a high near 31. West southwest wind 5 to 7 mph, with gusts as high as 20 mph.

Sunday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 21. South wind around 7 mph.

Monday: Snow likely, mainly before 11am. Mostly cloudy, with a high near 32. West southwest wind 3 to 6 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.

Monday Night: Partly cloudy, with a low around 18. South wind 6 to 9 mph, with gusts as high as 18 mph.

Tuesday: Partly sunny, with a high near 34. South wind around 10 mph, with gusts as high as 28 mph.

Tuesday Night: Snow likely, mainly after 11pm. Mostly cloudy, with a low around 20. South wind 5 to 10 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

Christmas Day: A slight chance of snow before 11am. Mostly sunny, with a high near 28.

Wednesday Night: A slight chance of snow after 11pm. Partly cloudy, with a low around 16.

Thursday: A chance of snow. Mostly cloudy, with a high near 27.

Thursday Night: Snow likely. Mostly cloudy, with a low around 18.

Friday: A chance of snow. Mostly cloudy, with a high near 28.

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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 is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow

Weather Topic: What are Stratocumulus Clouds?

Home - Education - Cloud Types - Stratocumulus Clouds

Next Topic: Stratus Clouds

Stratocumulus clouds are similar to altocumulus clouds in their fluffy appearance, but have a slightly darker shade due to their additional mass.

A good way to distinguish the two cloud types is to hold your hand out and measure the size of an individual cloud; if it is the size of your thumb it is generally an altocumulus cloud, if it is the size of your hand it is generally a stratocumulus cloud.

It is uncommon for stratocumulus clouds to produce precipitation, but if they do it is usually a light rain or snow.

Next Topic: Stratus Clouds