Forecast Details for Fort Thompson, SD

Recent Locations: Chetek, WI Pattison, MS Fort Thompson, SD

Today: Mostly cloudy through mid morning, then becoming sunny, with a high near 59. Breezy, with a west northwest wind 16 to 25 mph, with gusts as high as 34 mph.

Tonight: Mostly clear, with a low around 25. Blustery, with a northwest wind 17 to 22 mph becoming light after midnight. Winds could gust as high as 31 mph.

Thursday: A slight chance of snow before 1pm, then a chance of rain and snow between 1pm and 4pm, then a chance of rain after 4pm. Increasing clouds, with a high near 50. Calm wind becoming east northeast 5 to 8 mph in the morning. Chance of precipitation is 40%.

Thursday Night: Partly cloudy, with a low around 24. Northeast wind 5 to 10 mph becoming light north northeast after midnight.

Friday: Sunny, with a high near 58. Light and variable wind becoming southeast 5 to 10 mph in the afternoon.

Friday Night: Mostly cloudy, with a low around 41. Southeast wind 11 to 14 mph, with gusts as high as 23 mph.

Saturday: A slight chance of rain. Mostly cloudy, with a high near 69. Breezy, with a south southeast wind 16 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 54. South southeast wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 30%.

Sunday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 80. South wind 13 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Sunday Night: A chance of rain. Partly cloudy, with a low around 47. Chance of precipitation is 40%.

Monday: A chance of rain. Mostly sunny, with a high near 66. Breezy. Chance of precipitation is 50%.

Monday Night: A chance of rain and snow. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.

Tuesday: A chance of rain and snow. Partly sunny, with a high near 45. Chance of precipitation is 40%.

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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