Forecast Details for Polaris, MT

Recent Locations: Hazleton, PA Fort Jones, CA Polaris, MT

Current Alerts for Polaris, MT: Winter Weather Advisory

This Afternoon: Rain likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 50. South southwest wind around 7 mph. Chance of precipitation is 60%.

Tonight: Snow likely, possibly mixed with rain before 5am, then snow. Low around 29. South wind 5 to 7 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Thursday: Snow showers before 3pm, then snow, mainly after 3pm. Some thunder is also possible. Steady temperature around 31. West southwest wind 6 to 16 mph becoming north in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Thursday Night: Snow. Low around 24. West northwest wind 9 to 15 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Friday: A 30 percent chance of snow before noon. Partly sunny, with a high near 40. West northwest wind around 8 mph, with gusts as high as 18 mph. New snow accumulation of less than a half inch possible.

Friday Night: Mostly clear, with a low around 23. West northwest wind 3 to 7 mph.

Saturday: Sunny, with a high near 49. West wind 3 to 7 mph.

Saturday Night: Mostly clear, with a low around 29. West wind 5 to 7 mph becoming calm in the evening.

Sunday: Sunny, with a high near 56.

Sunday Night: Partly cloudy, with a low around 32.

Monday: Mostly sunny, with a high near 57.

Monday Night: Partly cloudy, with a low around 34.

Tuesday: A slight chance of rain. Mostly sunny, with a high near 59.

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

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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 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