Forecast Details for Fort Thompson, SD

Recent Locations: Assumption, IL Chloride, AZ Fort Thompson, SD

Today: A chance of snow, mainly before 1pm. Cloudy, with a high near 39. Northeast wind 8 to 11 mph. Chance of precipitation is 40%.

Tonight: Cloudy, with a low around 22. East northeast wind 10 to 13 mph.

Tuesday: A slight chance of snow before 1pm. Mostly cloudy, with a high near 43. Breezy, with a south southeast wind 14 to 23 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

Tuesday Night: Mostly cloudy, with a low around 34. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph.

Wednesday: Mostly sunny, with a high near 57. Breezy, with a west northwest wind 14 to 21 mph, with gusts as high as 29 mph.

Wednesday Night: Mostly clear, with a low around 27. West northwest wind 8 to 16 mph.

Thursday: Mostly sunny, with a high near 52. Northwest wind 7 to 10 mph.

Thursday Night: A slight chance of rain after 1am. Partly cloudy, with a low around 28. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 20%.

Friday: A chance of rain. Mostly sunny, with a high near 57. Southeast wind 6 to 14 mph. Chance of precipitation is 30%.

Friday Night: A slight chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 20%.

Saturday: A chance of rain. Mostly cloudy, with a high near 68. Breezy. Chance of precipitation is 30%.

Saturday Night: A chance of rain. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

Sunday: A chance of rain. Partly sunny, with a high near 75. Chance of precipitation is 40%.

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