Forecast Details for Harrisburg, PA

Recent Locations: Seneca Castle, NY Keenes, IL Harrisburg, PA

Current Alerts for Harrisburg, PA: Winter Weather Advisory

Today: Cloudy early, then gradual clearing, with a high near 36. Calm wind becoming southeast around 5 mph in the afternoon.

Tonight: A slight chance of snow, freezing rain, and sleet between 3am and 4am, then a chance of snow and freezing rain. Increasing clouds, with a low around 28. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday: Rain, snow, and freezing rain before 10am, then rain and snow between 10am and 1pm, then rain after 1pm. High near 39. Southeast wind around 6 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Little or no snow accumulation expected.

Tuesday Night: Rain. Low around 37. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Wednesday: A chance of rain, mainly after 1pm. Cloudy, with a high near 52. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday Night: Rain likely. Cloudy, with a low around 45. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: A chance of showers. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.

Thursday Night: Showers likely, mainly before 1am. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

Friday: A chance of showers before 1pm. Partly sunny, with a high near 62. Chance of precipitation is 30%.

Friday Night: Mostly cloudy, with a low around 47.

Saturday: A chance of showers. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

Sunday: A chance of showers. Mostly cloudy, with a high near 69. Chance of precipitation is 30%.

Want more detail? Get the Complete 7 Day and Night Detailed Forecast!

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).

National Weather Forecast--Current

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

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 Stratus Clouds?

Home - Education - Cloud Types - Stratus Clouds

Next Topic: Wall Clouds

Stratus clouds are similar to altostratus clouds, but form at a lower altitude and are identified by their fog-like appearance, lacking the distinguishing features of most clouds.

Stratus clouds are wider than most clouds, and their base has a smooth, uniform look which is lighter in color than a nimbostratus cloud. The presence of a stratus cloud indicates the possibility of minor precipitation, such as drizzle, but heavier precipitation does not typically arrive in the form of a stratus cloud.

Next Topic: Wall Clouds

Weather Topic: What are Altocumulus Clouds?

Home - Education - Cloud Types - Altocumulus Clouds

Next Topic: Altostratus Clouds

Similar to cirrocumulus clouds, altocumulus clouds are characterized by cloud patches. They are distinguished by larger cloudlets than cirrocumulus clouds but are still smaller than stratocumulus clouds.

Altocumulus clouds most commonly form in middle altitudes (between 2 and 5 km) and may resemble, at times, the shape of a flying saucer. These uncommon formations, called altocumulus lenticularis, are created by uplift in the atmosphere and are most often seen in close proximity to mountains.

Next Topic: Altostratus Clouds