Forecast Details for Saint Marie, MT

Recent Locations: Hartford, AR Saint Marie, MT Carol Stream, IL

Today: Sunny, with a high near 14. Wind chill values between -10 and zero. Calm wind becoming northwest 5 to 8 mph in the morning.

Tonight: Clear, with a low around -4. Wind chill values between -10 and -20. North wind 6 to 8 mph becoming east after midnight.

Sunday: Increasing clouds, with a high near 14. Wind chill values between -10 and -20. East southeast wind 9 to 17 mph, with gusts as high as 23 mph.

Sunday Night: Mostly cloudy, then gradually becoming clear, with a low around 8. Wind chill values between -10 and zero. East southeast wind 14 to 18 mph, with gusts as high as 25 mph.

Monday: Sunny, with a high near 39. Southeast wind 7 to 11 mph becoming west in the afternoon.

Monday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 24. West northwest wind around 10 mph.

Tuesday: A slight chance of snow before 11am, then a chance of rain. Partly sunny, with a high near 39. West northwest wind 10 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

Tuesday Night: A chance of rain before 8pm, then a chance of snow. Mostly cloudy, with a low around 20. North northwest wind around 16 mph. Chance of precipitation is 40%.

Wednesday: A 20 percent chance of snow before 11am. Mostly sunny, with a high near 39. West wind 16 to 20 mph, with gusts as high as 25 mph.

Wednesday Night: Partly cloudy, with a low around 26. West wind 16 to 20 mph, with gusts as high as 25 mph.

Thursday: A 10 percent chance of rain. Sunny, with a high near 45. Breezy, with a west wind 18 to 25 mph, with gusts as high as 31 mph.

Thursday Night: A slight chance of rain and snow. Partly cloudy, with a low around 27. Breezy.

Friday: A slight chance of snow. Partly sunny, with a high near 39. Breezy.

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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 Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds