Forecast Details for Oglala, SD

Recent Locations: Oglala, SD  
Tonight: Mostly clear, with a low around 19. North wind 10 to 15 mph becoming light and variable after midnight. Winds could gust as high as 22 mph.
Saturday: Partly sunny, with a high near 47. Wind chill values as low as 15 early. Light and variable wind becoming west around 6 mph in the afternoon.
Saturday Night: Mostly clear, with a low around 23. Wind chill values as low as 15. South wind around 7 mph.
Sunday: Sunny, with a high near 65. Wind chill values as low as 16 early. South wind 7 to 14 mph.
Sunday Night: Mostly cloudy, with a low around 40. Breezy, with a south wind 13 to 20 mph becoming northwest after midnight. Winds could gust as high as 30 mph.
Monday: Mostly sunny, with a high near 63. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Monday Night: A 30 percent chance of showers, mainly before midnight. Partly cloudy, with a low around 35. North wind 10 to 14 mph, with gusts as high as 22 mph.
Tuesday: Sunny, with a high near 60. West wind 11 to 16 mph becoming northeast in the afternoon. Winds could gust as high as 24 mph.
Tuesday Night: Partly cloudy, with a low around 37.
Wednesday: A slight chance of showers after noon. Mostly sunny, with a high near 71.
Wednesday Night: A chance of showers. Mostly cloudy, with a low around 44.
Thursday: A chance of showers. Partly sunny, with a high near 70.
Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Friday: Showers likely. Partly sunny, with a high near 64.

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Current U.S. National Radar--Current

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Current U.S. National Radar

National Weather Forecast--Current

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Today's National Weather Map

National Weather Forecast for Tomorrow

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North America Water Vapor (Moisture)

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North American Water Vapor Map

Weather Topic: What is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow