Forecast Details for Oglala, SD

Recent Locations: Menlo, GA Minnie, KY Oglala, SD

Overnight: Cloudy, with a low around 32. Northeast wind around 6 mph.

Thursday: A 30 percent chance of rain after 4pm. Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 65. Light and variable wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

Thursday Night: Rain and possibly a thunderstorm. Low around 32. East wind 10 to 14 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%.

Friday: Snow, possibly mixed with rain. High near 45. Breezy, with a northwest wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Friday Night: Snow likely, possibly mixed with rain before 3am, then a slight chance of snow and freezing rain between 3am and 4am, then a slight chance of snow after 4am. Mostly cloudy, with a low around 22. Blustery, with a northwest wind 15 to 20 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Saturday: Mostly sunny, with a high near 57. Northwest wind 7 to 14 mph, with gusts as high as 23 mph.

Saturday Night: Mostly clear, with a low around 27. North wind 5 to 13 mph becoming southwest in the evening. Winds could gust as high as 20 mph.

Sunday: Sunny, with a high near 63. West wind 6 to 13 mph becoming northeast in the afternoon. Winds could gust as high as 20 mph.

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

Monday: Partly sunny, with a high near 54. Breezy.

Monday Night: A slight chance of rain and snow. Mostly cloudy, with a low around 29. Breezy.

Tuesday: Mostly sunny, with a high near 72. Breezy.

Tuesday Night: Partly cloudy, with a low around 38. Breezy.

Wednesday: A slight chance of rain. Mostly sunny, with a high near 65. Breezy.

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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