Forecast Details for Jefferson, SD

Recent Locations: Lyons, SD Sugar Land, TX Jefferson, SD

Overnight: Showers. Steady temperature around 40. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday: Showers, mainly before noon, then a chance of sprinkles after 4pm. High near 45. Northeast wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night: A chance of sprinkles before 7pm. Mostly cloudy, with a low around 29. Northwest wind 5 to 10 mph becoming east northeast after midnight.

Friday: Showers and possibly a thunderstorm before 1pm, then showers likely between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. High near 45. East northeast wind 10 to 15 mph becoming north in the afternoon. Chance of precipitation is 90%.

Friday Night: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 1am. Mostly cloudy, with a low around 28. Blustery, with a west northwest wind 15 to 20 mph. Chance of precipitation is 20%.

Saturday: A 20 percent chance of showers after 1pm. Mostly cloudy, with a high near 44. Windy, with a west northwest wind 20 to 30 mph, with gusts as high as 35 mph.

Saturday Night: Mostly clear, with a low around 24. Blustery.

Sunday: Sunny, with a high near 59.

Sunday Night: Partly cloudy, with a low around 32.

Monday: Mostly cloudy, with a high near 53.

Monday Night: Mostly cloudy, with a low around 24.

Tuesday: Partly sunny, with a high near 53.

Tuesday Night: Mostly cloudy, with a low around 36.

Wednesday: Partly sunny, with a high near 69. Breezy.

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Current U.S. National Radar--Current

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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 is Snow?

Home - Education - Precipitation - Snow

Snow Next Topic: Stratocumulus Clouds

Snow is precipitation taking the form of ice crystals. Each ice crystal, or snowflake, has unique characteristics, but all of them grow in a hexagonal structure. Snowfall can last for sustained periods of time and result in significant buildup of snow on the ground.

On the earth's surface, snow starts out light and powdery, but as it begins to melt it tends to become more granular, producing small bits of ice which have the consistency of sand. After several cycles of melting and freezing, snow can become very dense and ice-like, commonly known as snow pack.

Next Topic: Stratocumulus Clouds

Weather Topic: What are Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds