Forecast Details for Lewis Run, PA

Recent Locations: Juneau, WI Temple, OK Lewis Run, PA

Current Alerts for Lewis Run, PA: Freeze Warning Freeze Watch

Overnight: Showers likely. Cloudy, with a low around 36. West wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: A chance of rain and snow showers before 9am, then a slight chance of snow showers between 9am and 11am. Cloudy, then gradually becoming mostly sunny, with a high near 44. West wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Sunday Night: A chance of snow showers, mainly between 9pm and 2am. Mostly cloudy, with a low around 23. West wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

Monday: Partly sunny, with a high near 38. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

Monday Night: Widespread frost after midnight. Otherwise, mostly clear, with a low around 20. Northwest wind around 5 mph becoming calm in the evening.

Tuesday: Mostly sunny, with a high near 53.

Tuesday Night: A chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.

Wednesday: Mostly sunny, with a high near 64.

Wednesday Night: Mostly clear, with a low around 39.

Thursday: Sunny, with a high near 70.

Thursday Night: Partly cloudy, with a low around 46.

Friday: Mostly sunny, with a high near 74.

Friday Night: A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

Saturday: Showers likely. Partly sunny, with a high near 68. Chance of precipitation is 60%.

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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 are Wall Clouds?

Home - Education - Cloud Types - Wall Clouds

Wall Clouds Next Topic: Altocumulus Clouds

A wall cloud forms underneath the base of a cumulonimbus cloud, and can be a hotbed for deadly tornadoes.

Wall clouds are formed by air flowing into the cumulonimbus clouds, which can result in the wall cloud descending from the base of the cumulonimbus cloud, or rising fractus clouds which join to the base of the storm cloud as the wall cloud takes shape.

Wall clouds can be very large, and in the Northern Hemisphere they generally form at the southern edge of cumulonimbus clouds.

Next Topic: Altocumulus Clouds

Weather Topic: What are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

Next Topic: Cirrocumulus Clouds

Altostratus clouds form at mid to high-level altitudes (between 2 and 7 km) and are created by a warm, stable air mass which causes water vapor to condense as it rise through the atmosphere. Usually altostratus clouds are featureless sheets characterized by a uniform color.

In some cases, wind punching through the cloud formation may give it a waved appearance, called altostratus undulatus. Altostratus clouds are commonly seen with other cloud formations accompanying them.

Next Topic: Cirrocumulus Clouds