Forecast Details for Butte, MT

Recent Locations: Joliet, MT Cameron, LA Butte, MT

Today: A 30 percent chance of snow, mainly between 3pm and 5pm. Partly sunny, with a high near 31. West northwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph. Little or no snow accumulation expected.

Tonight: Partly cloudy, with a low around 13. West northwest wind 13 to 18 mph becoming light and variable. Winds could gust as high as 28 mph.

Wednesday: A 30 percent chance of snow after noon. Partly sunny, with a high near 39. Breezy, with a south southeast wind 6 to 11 mph becoming west southwest 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Little or no snow accumulation expected.

Wednesday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 33. West southwest wind 14 to 21 mph, with gusts as high as 33 mph. New snow accumulation of less than a half inch possible.

Thursday: Snow before 9am, then rain and snow. Snow level 5700 feet. High near 46. Windy, with a west southwest wind 15 to 20 mph increasing to 26 to 31 mph in the afternoon. Winds could gust as high as 47 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

Thursday Night: Rain and snow likely before 9pm, then snow likely between 9pm and 3am, then rain and snow likely after 3am. Mostly cloudy, with a low around 36. Breezy. Chance of precipitation is 70%. Little or no snow accumulation expected.

Friday: Rain and snow likely. Snow level 5700 feet rising to 6400 feet in the afternoon. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 60%. Little or no snow accumulation expected.

Friday Night: Rain likely before 9pm, then rain and snow likely. Snow level 6300 feet. Mostly cloudy, with a low around 33. Breezy.

Saturday: Rain and snow likely, becoming all snow after 9am. Mostly cloudy, with a high near 41. Windy.

Saturday Night: A slight chance of snow before midnight. Mostly cloudy, with a low around 21. Blustery.

Sunday: A slight chance of snow. Mostly cloudy, with a high near 38.

Sunday Night: A chance of snow. Mostly cloudy, with a low around 28.

Monday: A chance of rain and snow. Mostly cloudy, with a high near 53.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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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 Contrails?

Home - Education - Cloud Types - Contrails

Next Topic: Cumulonimbus Clouds

A contrail is an artificial cloud, created by the passing of an aircraft.

Contrails form because water vapor in the exhaust of aircraft engines is suspended in the air under certain temperatures and humidity conditions. These contrails are called exhaust contrails.

Another type of contrail can form due to a temporary reduction in air pressure moving over the plane's surface, causing condensation. These are called aerodynamic contrails.

When you can see your breath on a cold day, it is also because of condensation. The reason contrails last longer than the condensation from your breath is because the water in contrails freezes into ice particles.

Next Topic: Cumulonimbus Clouds

Weather Topic: What are Cumulus Clouds?

Home - Education - Cloud Types - Cumulus Clouds

Next Topic: Drizzle

Cumulus clouds are fluffy and textured with rounded tops, and may have flat bottoms. The border of a cumulus cloud is clearly defined, and can have the appearance of cotton or cauliflower.

Cumulus clouds form at low altitudes (rarely above 2 km) but can grow very tall, becoming cumulus congestus and possibly the even taller cumulonimbus clouds. When cumulus clouds become taller, they have a greater chance of producing precipitation.

Next Topic: Drizzle