Forecast Details for Lyons, SD

Recent Locations: Union Hill, IL Plano, TX Lyons, SD

Tonight: Showers. Low around 31. Breezy, with an east wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday: Rain showers, freezing rain, and sleet, becoming all rain after 10am. High near 37. Breezy, with an east northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New sleet accumulation of less than a half inch possible.

Thursday Night: A slight chance of freezing rain after 1am. Mostly cloudy, with a low around 27. North wind 5 to 10 mph. Chance of precipitation is 20%.

Friday: Freezing rain before 10am, then rain or freezing rain between 10am and 1pm, then rain showers after 1pm. High near 39. East northeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%.

Friday Night: A chance of rain showers before 10pm, then a chance of snow showers. Cloudy, with a low around 27. Blustery, with a north wind 10 to 20 mph becoming west northwest after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Saturday: A 40 percent chance of snow showers. Cloudy, with a high near 39. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 40 mph. Little or no snow accumulation expected.

Saturday Night: Partly cloudy, with a low around 22. Blustery.

Sunday: Sunny, with a high near 51.

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

Monday: Partly sunny, with a high near 46.

Monday Night: Mostly cloudy, with a low around 21.

Tuesday: Partly sunny, with a high near 49. Breezy.

Tuesday Night: Mostly cloudy, with a low around 35. Breezy.

Wednesday: Partly sunny, with a high near 65. Breezy.

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

Current U.S. National Radar--Current

The Current National Weather Radar is shown below with a UTC Time (subtract 5 hours from UTC to get Eastern Time).

National Weather Forecast--Current

The Current National Weather Forecast and National Weather Map are shown below.

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

North America Water Vapor (Moisture)

This map shows recent moisture content over North America. Bright and colored areas show high moisture (ie, clouds); brown indicates very little moisture present; black indicates no moisture.

Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds