Forecast Details for Lewis Run, PA

Recent Locations: Lewis Run, PA  
Overnight: A chance of rain. Cloudy, with a low around 52. Southeast wind around 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday: A chance of rain, mainly after 2pm. Cloudy, with a high near 60. Southeast wind 8 to 11 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night: Rain. Low around 48. Southeast wind around 16 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday: Rain before 2pm, then showers likely after 2pm. High near 63. South wind 10 to 17 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night: Showers likely, mainly before 7pm. Cloudy, with a low around 54. South wind 5 to 8 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday: A slight chance of showers before 7am, then a slight chance of showers after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 20%.
Monday Night: Partly cloudy, with a low around 48.
Tuesday: A chance of showers after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 70%.
Wednesday: A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 50%.
Wednesday Night: Showers likely. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Thursday: Showers and possibly a thunderstorm. High near 72. Chance of precipitation is 80%.
Thursday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Friday: Showers likely. Partly sunny, with a high near 67. Chance of precipitation is 60%.

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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)

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.

North American Water Vapor Map

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Precipitation Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain

Weather Topic: What are Shelf Clouds?

Home - Education - Cloud Types - Shelf Clouds

Shelf Clouds Next Topic: Sleet

A shelf cloud is similar to a wall cloud, but forms at the front of a storm cloud, instead of at the rear, where wall clouds form.

A shelf cloud is caused by a series of events set into motion by the advancing storm; first, cool air settles along the ground where precipitation has just fallen. As the cool air is brought in, the warmer air is displaced, and rises above it, because it is less dense. When the warmer air reaches the bottom of the storm cloud, it begins to cool again, and the resulting condensation is a visible shelf cloud.

Next Topic: Sleet