Forecast Details for Potomac, MT

Recent Locations: Dateland, AZ Salem, FL Potomac, MT

Today: A 50 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 57. Calm wind.

Tonight: Rain likely before 4am, then rain and snow between 4am and 5am, then rain after 5am. Low around 33. Calm wind. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday: Rain and snow, becoming all snow after noon. Snow level 5000 feet lowering to 3600 feet in the afternoon . High near 41. Calm wind becoming west 5 to 8 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Thursday Night: Snow, mainly before midnight. Low around 31. West wind 5 to 7 mph becoming calm after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Friday: A chance of snow, mixing with rain after 9am, then gradually ending. Snow level rising to 4900 feet in the afternoon. Mostly cloudy, with a high near 48. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 30%. Little or no snow accumulation expected.

Friday Night: Partly cloudy, with a low around 26.

Saturday: Sunny, with a high near 57.

Saturday Night: Mostly clear, with a low around 31.

Sunday: Mostly sunny, with a high near 62.

Sunday Night: Mostly cloudy, with a low around 33.

Monday: Partly sunny, with a high near 65.

Monday Night: Partly cloudy, with a low around 37.

Tuesday: Mostly sunny, with a high near 66.

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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 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

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