Forecast Details for Eureka, SD

Recent Locations: Sugar Hill, NH Daggett, MI Eureka, SD

Tonight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 23. West wind 10 to 17 mph.

Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 39. Breezy, with a northwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon.

Sunday Night: Mostly cloudy, with a low around 19. North wind 9 to 14 mph.

Monday: Partly sunny, with a high near 29. North northeast wind 9 to 11 mph.

Monday Night: Mostly cloudy, with a low around 16. Southeast wind 10 to 16 mph.

Tuesday: A slight chance of snow before 1pm. Mostly cloudy, with a high near 40. Windy, with a south southeast wind 20 to 30 mph, with gusts as high as 38 mph. Chance of precipitation is 20%.

Tuesday Night: A slight chance of rain after 1am. Mostly cloudy, with a low around 32. Breezy, with a south southeast wind 21 to 25 mph, with gusts as high as 33 mph. Chance of precipitation is 20%.

Wednesday: A slight chance of rain before 1pm. Mostly sunny, with a high near 49. Windy, with a west wind 20 to 30 mph. Chance of precipitation is 20%.

Wednesday Night: Mostly cloudy, with a low around 23. Blustery, with a north northwest wind 14 to 23 mph.

Thursday: A chance of snow, mainly after 1pm. Partly sunny, with a high near 40. Chance of precipitation is 30%.

Thursday Night: A chance of snow. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.

Friday: A chance of rain and snow. Partly sunny, with a high near 46. Chance of precipitation is 40%.

Friday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.

Saturday: A chance of rain and snow. Mostly sunny, with a high near 50. Chance of precipitation is 30%.

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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 Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation

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