Forecast Details for Bison, SD

Recent Locations: Yantic, CT Cherry Valley, MA Bison, SD

Today: Mostly sunny, with a high near 47. Wind chill values as low as 11 early. West wind 9 to 11 mph, with gusts as high as 22 mph.

Tonight: A 10 percent chance of snow after 5am. Mostly cloudy, then gradually becoming mostly clear, with a low around 27. Wind chill values as low as 20. West wind 6 to 8 mph becoming east after midnight.

Sunday: A chance of snow before 10am, then a chance of rain and snow between 10am and 11am, then rain after 11am. High near 46. East wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

Sunday Night: Rain showers before 5am, then rain and snow showers. Low around 32. Wind chill values as low as 20. Breezy, with an east wind 16 to 20 mph becoming north after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Monday: Rain and snow showers likely before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 46. Breezy, with a north wind 21 to 24 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

Monday Night: Mostly cloudy, with a low around 26. North wind 13 to 18 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 28 mph.

Tuesday: A slight chance of snow showers before 11am, then a slight chance of rain and snow showers between 11am and noon, then a chance of rain showers after noon. Mostly cloudy, with a high near 50. North wind 6 to 9 mph becoming southeast in the morning. Winds could gust as high as 17 mph. Chance of precipitation is 30%.

Tuesday Night: Mostly cloudy, with a low around 29. West wind 3 to 6 mph.

Wednesday: A slight chance of showers after noon. Mostly sunny, with a high near 56.

Wednesday Night: Partly cloudy, with a low around 29.

Thursday: Mostly sunny, with a high near 56.

Thursday Night: Partly cloudy, with a low around 30.

Friday: Sunny, with a high near 63.

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Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds