Forecast Details for Perryopolis, PA

Recent Locations: Perryopolis, PA

Overnight: Mostly cloudy, with a low around 70. Southwest wind around 7 mph.

Tuesday: Showers and thunderstorms, mainly before 4pm. High near 82. Southwest wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday Night: Scattered showers and thunderstorms before 11pm, then isolated showers between 11pm and midnight. Patchy dense fog after 11pm. Otherwise, cloudy, then gradually becoming partly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 84. Calm wind becoming northwest around 5 mph in the afternoon.

Wednesday Night: Patchy fog after 3am. Otherwise, mostly clear, with a low around 63. Calm wind.

Thursday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 85. Chance of precipitation is 20%.

Thursday Night: Patchy fog after 5am. Otherwise, mostly clear, with a low around 61.

Independence Day: Sunny, with a high near 85.

Friday Night: Mostly clear, with a low around 64.

Saturday: Mostly sunny, with a high near 89.

Saturday Night: Partly cloudy, with a low around 69.

Sunday: Mostly sunny and hot, with a high near 92.

Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Monday: A chance of showers and thunderstorms. Partly sunny, with a high near 89. Chance of precipitation is 50%.

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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 is Rain?

Home - Education - Precipitation - Rain

Rain Next Topic: Shelf Clouds

Precipitation in the form of water droplets is called rain. Rain generally has a tendency to fall with less intensity over a greater period of time, and when rainfall is more severe it is usually less sustained.

Rain is the most common form of precipitation and happens with greater frequency depending on the season and regional influences. Cities have been shown to have an observable effect on rainfall, due to an effect called the urban heat island. Compared to upwind, monthly rainfall between twenty and forty miles downwind of cities is 30% greater.

Next Topic: Shelf Clouds

Weather Topic: What is Sleet?

Home - Education - Precipitation - Sleet

Sleet Next Topic: Snow

Sleet is a form of precipitation in which small ice pellets are the primary components. These ice pellets are smaller and more translucent than hailstones, and harder than graupel. Sleet is caused by specific atmospheric conditions and therefore typically doesn't last for extended periods of time.

The condition which leads to sleet formation requires a warmer body of air to be wedged in between two sub-freezing bodies of air. When snow falls through a warmer layer of air it melts, and as it falls through the next sub-freezing body of air it freezes again, forming ice pellets known as sleet. In some cases, water droplets don't have time to freeze before reaching the surface and the result is freezing rain.

Next Topic: Snow