Forecast Details for Harlem, MT

Recent Locations: Rolling Prairie, IN Phlox, WI Harlem, MT

Current Alerts for Harlem, MT: High Wind Watch Winter Weather Advisory

Today: A 40 percent chance of rain, mainly after 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 80. Southeast wind 9 to 17 mph becoming west southwest in the afternoon. Winds could gust as high as 24 mph.

Tonight: Rain showers before 4am, then rain, possibly mixed with snow showers. Some thunder is also possible. Low around 31. Blustery, with a southwest wind 17 to 22 mph becoming west northwest 24 to 29 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday: Rain and snow likely before noon, then a chance of snow between noon and 3pm, then a chance of rain and snow after 3pm. Mostly cloudy, with a high near 43. Windy, with a west northwest wind 30 to 33 mph, with gusts as high as 48 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

Thursday Night: A slight chance of rain and snow before 9pm, then a slight chance of snow. Mostly cloudy, with a low around 26. Blustery, with a northwest wind 23 to 28 mph decreasing to 16 to 21 mph after midnight. Winds could gust as high as 39 mph. Chance of precipitation is 20%.

Friday: A 50 percent chance of snow. Partly sunny, with a high near 38. Breezy, with a west northwest wind 17 to 26 mph, with gusts as high as 39 mph. New snow accumulation of less than a half inch possible.

Friday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 20. Blustery, with a west northwest wind 13 to 23 mph, with gusts as high as 32 mph. New snow accumulation of less than a half inch possible.

Saturday: A 30 percent chance of snow. Mostly cloudy, with a high near 40. West northwest wind 13 to 20 mph, with gusts as high as 28 mph. Little or no snow accumulation expected.

Saturday Night: Mostly cloudy, with a low around 19. Northwest wind 12 to 17 mph becoming light west after midnight. Winds could gust as high as 24 mph.

Sunday: A slight chance of snow. Partly sunny, with a high near 43.

Sunday Night: Mostly cloudy, with a low around 22.

Monday: Mostly sunny, with a high near 51.

Monday Night: Partly cloudy, with a low around 25.

Tuesday: 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)

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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

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