Forecast Details for Orrstown, PA

Recent Locations: Westmoreland, KS West Covina, CA Orrstown, PA

This Afternoon: Cloudy, with a high near 74. Northeast wind around 7 mph.

Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 57. Light north wind.

Friday: Sunny, with a high near 83. Calm wind.

Friday Night: Clear, with a low around 57. Calm wind.

Saturday: Sunny, with a high near 85. Calm wind becoming south 5 to 7 mph in the morning.

Saturday Night: A chance of showers after 2am. Partly cloudy, with a low around 64. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Sunday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 82. Chance of precipitation is 80%.

Sunday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 61. Chance of precipitation is 80%.

Monday: Mostly sunny, with a high near 80.

Monday Night: Mostly clear, with a low around 55.

Tuesday: Sunny, with a high near 75.

Tuesday Night: Mostly clear, with a low around 51.

Wednesday: Sunny, with a high near 75.

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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

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

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.

Weather Topic: What are Cirrocumulus Clouds?

Home - Education - Cloud Types - Cirrocumulus Clouds

Next Topic: Cirrostratus Clouds

Cirrocumulus clouds form at high altitudes (usually around 5 km) and have distinguishing characteristics displayed in a fine layer of small cloud patches. These small cloud patches are sometimes referred to as "cloudlets" in relation to the whole cloud formation.

Cirrocumulus clouds are formed from ice crystals and water droplets. Often, the water droplets in the cloud freeze into ice crystals and the cloud becomes a cirrostratus cloud. Because of this common occurrence, cirrocumulus cloud formations generally pass rapidly.

Next Topic: Cirrostratus Clouds

Weather Topic: What are Cirrus Clouds?

Home - Education - Cloud Types - Cirrus Clouds

Next Topic: Condensation

Cirrus clouds are high-level clouds that occur above 20,000 feet and are composed mainly of ice crystals. They are thin and wispy in appearance.

What do they indicate?
They are often the first sign of an approaching storm.

Next Topic: Condensation