Forecast Details for Saint Marie, MT

Recent Locations: Clio, MI Hima, KY Saint Marie, MT

Overnight: Clear, with a low around -2. Wind chill values between -10 and -15. East northeast wind around 8 mph.

Sunday: Increasing clouds, with a high near 17. Wind chill values between -5 and -15. East southeast wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.

Sunday Night: Mostly cloudy during the early evening, then clearing, with a low around 10. Wind chill values between -5 and zero. East southeast wind 10 to 20 mph, with gusts as high as 29 mph.

Monday: Increasing clouds, with a high near 42. Southeast wind 7 to 15 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

Monday Night: A slight chance of rain before 2am, then a slight chance of snow. Mostly cloudy, with a low around 22. West northwest wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Tuesday: Mostly sunny, with a high near 35. West northwest wind 14 to 16 mph, with gusts as high as 26 mph.

Tuesday Night: A 30 percent chance of snow after 11pm. Partly cloudy, with a low around 21. West northwest wind 8 to 10 mph becoming southeast after midnight. New snow accumulation of less than a half inch possible.

Wednesday: A 30 percent chance of snow before 11am. Mostly sunny, with a high near 38. Southeast wind 10 to 17 mph becoming west northwest in the afternoon. Winds could gust as high as 22 mph.

Wednesday Night: Mostly clear, with a low around 25. West wind 17 to 20 mph, with gusts as high as 26 mph.

Thursday: Sunny, with a high near 44. Breezy, with a west wind 21 to 28 mph, with gusts as high as 34 mph.

Thursday Night: A 20 percent chance of snow. Partly cloudy, with a low around 25. Breezy, with a west wind around 24 mph, with gusts as high as 30 mph.

Friday: A chance of snow. Partly sunny, with a high near 35. Breezy.

Friday Night: A chance of snow. Mostly cloudy, with a low around 8. Blustery.

Saturday: A slight chance of snow. Mostly sunny, with a high near 20.

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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 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