Forecast Details for Saint Marys, PA

Recent Locations: Avoca, WI Santa Maria, CA Saint Marys, PA

Today: Areas of fog before 1pm. Otherwise, partly sunny, with a high near 50. Light and variable wind.

Tonight: Rain likely, mainly after 4am. Patchy fog. Otherwise, cloudy, with a low around 41. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

Thursday: Rain. Patchy fog before 11am. High near 54. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night: Rain. Low around 48. Southwest wind around 5 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

Friday: A chance of rain, mainly before 1pm. Mostly cloudy, with a high near 61. Southwest wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Friday Night: A slight chance of rain, then a chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday: A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 68. Chance of precipitation is 90%.

Saturday Night: A chance of rain before 1am. Mostly cloudy, with a low around 39. Chance of precipitation is 50%.

Sunday: Mostly sunny, with a high near 54.

Sunday Night: Partly cloudy, with a low around 39.

Monday: Sunny, with a high near 62.

Monday Night: Partly cloudy, with a low around 47.

Tuesday: A chance of rain. Mostly sunny, with a high near 67. Chance of precipitation is 30%.

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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 Graupel?

Home - Education - Precipitation - Graupel

Graupel Next Topic: Hail

Graupel is a form of precipitation that is created by atmospheric conditions which cause supercooled water droplets to contact snow crystals and freeze to their surface.

Sometimes known as soft hail or snow pellets, graupel is delicate and easily destroyed by touch. Whereas hail usually falls during severe weather, graupel doesn't require such conditions to form, and can form in mild precipitation similar to situations which produce snowfall.

Next Topic: Hail

Weather Topic: What are Hole Punch Clouds?

Home - Education - Cloud Types - Hole Punch Clouds

Hole Punch Clouds Next Topic: Mammatus Clouds

A hole punch cloud is an unusual occurrence when a disk-shaped hole appears in a cirrostratus, cirrocumulus, or altocumulus cloud.

When part of the cloud forms ice crystals, water droplets in the surrounding area of the cloud evaporate. The effect of this process produces a large elliptical gap in the cloud. The hole punch cloud formation is rare, but it is not specific to any geographic area.

Other names which have been used to describe this phenomena include fallstreak hole, skypunch, and cloud hole.

Next Topic: Mammatus Clouds