Forecast Details for Saint Mary, MO

Recent Locations: Saint Mary, MO  
Today: Sunny, with a high near 68. North wind around 8 mph.
Tonight: Mostly clear, with a low around 43. East wind 5 to 7 mph.
Thursday: A 20 percent chance of showers after 4pm. Increasing clouds, with a high near 67. Southeast wind 5 to 8 mph.
Thursday Night: A chance of showers, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 55. Southeast wind 9 to 11 mph. Chance of precipitation is 60%.
Friday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 78. Breezy, with a south wind 13 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 60%.
Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Breezy. Chance of precipitation is 60%.
Saturday: A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 79. Breezy.
Saturday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 67. Breezy.
Sunday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 81. Breezy.
Sunday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 63. Breezy. Chance of precipitation is 70%.
Monday: Showers and thunderstorms likely. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 55.
Tuesday: A 20 percent chance of showers. Sunny, with a high near 80.

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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).

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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Tomorrows National Weather Map

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