Forecast Details for Mountville, PA

Recent Locations: Vanderpool, TX Grafton, OH Mountville, PA

Overnight: A chance of rain. Mostly cloudy, with a low around 62. Southwest wind around 11 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

Wednesday: A chance of rain and thunderstorms, then showers and possibly a thunderstorm after 3pm. High near 77. West wind 8 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Patchy fog after 2am. Otherwise, cloudy, with a low around 54. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Thursday: A chance of showers, mainly after 7am. Patchy fog before 11am. Otherwise, cloudy, with a high near 55. East wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Thursday Night: A slight chance of showers before 2am. Cloudy, with a low around 47. East wind 7 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Friday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Partly sunny, with a high near 77. Chance of precipitation is 20%.

Friday Night: Mostly cloudy, with a low around 60.

Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.

Saturday Night: A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.

Sunday: Showers. High near 68. Chance of precipitation is 80%.

Sunday Night: Showers. Low around 38. Chance of precipitation is 80%.

Monday: Mostly sunny, with a high near 55.

Monday Night: Mostly clear, with a low around 35.

Tuesday: A chance of showers. Partly sunny, with a high near 55. Chance of precipitation is 30%.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What is Condensation?

Home - Education - Precipitation - Condensation

Next Topic: Contrails

Condensation is the process which creates clouds, and therefore it is a crucial process in the water cycle. Condensation is the change of matter from a state of gas into a state of liquid, and it happens because water molecules release heat into the atmosphere and become organized into a more closely packed structure, what we might see as water droplets.

Water is always present in the air around us as a vapor, but it's too small for us to see. When water undergoes the process of condensation it becomes organized into visible water droplets. You've probably seen condensation happen before on the surface of a cold drink!

Next Topic: Contrails

Weather Topic: What are Cumulonimbus Clouds?

Home - Education - Cloud Types - Cumulonimbus Clouds

Cumulonimbus Clouds Next Topic: Cumulus Clouds

The final form taken by a growing cumulus cloud is the cumulonimbus cloud, which is very tall and dense. The tower of a cumulonimbus cloud can soar 23 km into the atmosphere, although most commonly they stop growing at an altitude of 6 km.

Even small cumulonimbus clouds appear very large in comparison to other cloud types. They can signal the approach of stormy weather, such as thunderstorms or blizzards.

Next Topic: Cumulus Clouds