Forecast Details for Chambersburg, PA

Recent Locations: Chambersburg, PA

Today: A chance of showers, mainly before 4pm. Cloudy, with a high near 69. Light northeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

Tonight: Showers likely, mainly after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 63. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

Tuesday: A chance of showers, then showers and possibly a thunderstorm after 2pm. Patchy fog before 7am. High near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 68. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 20%.

Juneteenth: Showers likely and possibly a thunderstorm, mainly after noon. Mostly sunny, with a high near 90. Chance of precipitation is 60%.

Thursday Night: Partly cloudy, with a low around 64.

Friday: Mostly sunny, with a high near 83.

Friday Night: Partly cloudy, with a low around 62.

Saturday: Mostly sunny, with a high near 87.

Saturday Night: Partly cloudy, with a low around 68.

Sunday: Mostly sunny and hot, with a high near 93.

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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 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