Forecast Details for Orrstown, PA

Recent Locations: Orrstown, PA  
Today: Sunny, with a high near 63. West wind 6 to 14 mph, with gusts as high as 30 mph.
Tonight: Mostly clear, with a low around 36. Northwest wind 5 to 9 mph becoming light after midnight.
Sunday: Partly sunny, with a high near 55. West wind 5 to 8 mph.
Sunday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 34. West wind 3 to 6 mph.
Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 61. Northwest wind 5 to 9 mph.
Monday Night: Areas of frost after 2am. Otherwise, mostly clear, with a low around 38.
Tuesday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 68.
Tuesday Night: A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Wednesday: A chance of showers. Partly sunny, with a high near 62. Breezy. Chance of precipitation is 50%.
Wednesday Night: Mostly clear, with a low around 36.
Thursday: Sunny, with a high near 61.
Thursday Night: Areas of frost. Otherwise, mostly clear, with a low around 36.
Friday: Sunny, with a high near 65.

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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

The Current National Weather Forecast and National Weather Map are shown below.

Today's National Weather Map

National Weather Forecast for Tomorrow

Tomorrow National Weather Forecast and Tomorrow National Weather Map are show below.

Tomorrows National Weather Map

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 are Altostratus Clouds?

Home - Education - Cloud Types - Altostratus Clouds

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

Weather Topic: What are Cirrostratus Clouds?

Home - Education - Cloud Types - Cirrostratus Clouds

Cirrostratus Clouds Next Topic: Cirrus Clouds

Cirrostratus clouds are high, thin clouds that form above 20,000 feet and are made mostly of ice crystals. They sometimes look like giant feathers, horse tails, or curls of hair in the sky. These clouds are pushed by the jet stream and can move at high speeds reaching 100 mph.

What do they indicate?
They indicate that a precipitation is likely within 24 hours.

Next Topic: Cirrus Clouds